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code guessing, round #45 (completed)

started at ; stage 2 at ; ended at

specification

yawn. play connect four. any language.

connect four is a game. there is a grid. the grid has 7 columns and 6 rows. there are two players. each has a colour of piece they put on the grid. they take turns making moves. to make a move, you pick a non-full column and put a piece of your colour on the lowest empty space on that column. if you form a diagonal, vertical or horizontal line of 4 pieces of your colour, you win the game. otherwise, the next person plays. if the grid is full, the game is a tie.

the interface is simple. your program starts. it reads either an s or an f from stdin, followed by a newline.

if the character was s, it goes second. it reads an ascii digit from 1 to 7 from stdin, followed by a newline. it updates its internal state to reflect that the other player has played this move. the program continues to run. it writes an ascii digit from 1 to 7 to stdout, followed by a newline. the program continues to run. it reads another move and continues ad infinitum. once the game is over, any further behaviour is not specified.

if the character was f, it goes first. it writes an ascii digit from 1 to 7 to stdout, followed by a newline. this represents its first move. the following behaviour is the same as s.

the newlines are required in the hopes that they will make buffering work correctly, as streams should be line-buffered by default. they are very important. do not forget to include and read them.

your challenge is to implement such a program. your program must be executable from an environment with standard io streams and have the exact interface as described above. it does not have to play connect four optimally. it only has to play. all moves output must be valid. all moves received will be valid. there is no otherwise. otherwise is undefined.

results

  1. πŸ‘‘ LyricLy +5 -1 = 4
    1. soup girl (was IFcoltransG)
    2. Olivia
    3. yui (was Cow Bandit)
    4. JJRubes (was Amanda)
    5. luatic (was kimapr)
    6. kimapr (was yui)
    7. taswelll
    8. razetime (was luatic)
    9. vspf
    10. IFcoltransG (was JJRubes)
    11. moshikoi
    12. Amanda (was razetime)
    13. Cow Bandit (was soup girl)
    14. jetison333
  2. luatic +5 -3 = 2
    1. razetime (was IFcoltransG)
    2. Olivia
    3. vspf (was Cow Bandit)
    4. soup girl (was Amanda)
    5. kimapr
    6. yui
    7. IFcoltransG (was taswelll)
    8. moshikoi (was vspf)
    9. LyricLy
    10. taswelll (was JJRubes)
    11. JJRubes (was moshikoi)
    12. Cow Bandit (was razetime)
    13. Amanda (was soup girl)
    14. jetison333
  3. razetime +3 -1 = 2
    1. soup girl (was IFcoltransG)
    2. Olivia
    3. jetison333 (was Cow Bandit)
    4. JJRubes (was Amanda)
    5. kimapr
    6. yui
    7. moshikoi (was taswelll)
    8. LyricLy (was luatic)
    9. IFcoltransG (was vspf)
    10. Amanda (was LyricLy)
    11. Cow Bandit (was JJRubes)
    12. luatic (was moshikoi)
    13. taswelll (was soup girl)
    14. vspf (was jetison333)
  4. vspf +4 -3 = 1
    1. IFcoltransG
    2. soup girl (was Olivia)
    3. taswelll (was Cow Bandit)
    4. Cow Bandit (was Amanda)
    5. kimapr
    6. razetime (was yui)
    7. LyricLy (was taswelll)
    8. luatic
    9. Amanda (was LyricLy)
    10. JJRubes
    11. yui (was moshikoi)
    12. Olivia (was razetime)
    13. jetison333 (was soup girl)
    14. moshikoi (was jetison333)
  5. yui +3 -2 = 1
    1. jetison333 (was IFcoltransG)
    2. Olivia
    3. razetime (was Cow Bandit)
    4. LyricLy (was Amanda)
    5. Amanda (was kimapr)
    6. kimapr (was taswelll)
    7. JJRubes (was luatic)
    8. vspf
    9. IFcoltransG (was LyricLy)
    10. Cow Bandit (was JJRubes)
    11. luatic (was moshikoi)
    12. moshikoi (was razetime)
    13. soup girl
    14. taswelll (was jetison333)
  6. Cow Bandit +1 -0 = 1
    1. JJRubes (was IFcoltransG)
    2. IFcoltransG (was Olivia)
    3. moshikoi (was Amanda)
    4. jetison333 (was kimapr)
    5. Amanda (was yui)
    6. kimapr (was taswelll)
    7. luatic
    8. LyricLy (was vspf)
    9. vspf (was LyricLy)
    10. Olivia (was JJRubes)
    11. razetime (was moshikoi)
    12. soup girl (was razetime)
    13. taswelll (was soup girl)
    14. yui (was jetison333)
  7. Amanda +2 -2 = 0
    1. LyricLy (was IFcoltransG)
    2. taswelll (was Olivia)
    3. jetison333 (was Cow Bandit)
    4. soup girl (was kimapr)
    5. vspf (was yui)
    6. razetime (was taswelll)
    7. luatic
    8. kimapr (was vspf)
    9. moshikoi (was LyricLy)
    10. JJRubes
    11. Cow Bandit (was moshikoi)
    12. Olivia (was razetime)
    13. yui (was soup girl)
    14. IFcoltransG (was jetison333)
  8. jetison333 +2 -2 = 0
    1. luatic (was IFcoltransG)
    2. razetime (was Olivia)
    3. yui (was Cow Bandit)
    4. Amanda
    5. kimapr
    6. IFcoltransG (was yui)
    7. LyricLy (was taswelll)
    8. soup girl (was luatic)
    9. moshikoi (was vspf)
    10. vspf (was LyricLy)
    11. Cow Bandit (was JJRubes)
    12. taswelll (was moshikoi)
    13. Olivia (was razetime)
    14. JJRubes (was soup girl)
  9. taswelll +1 -1 = 0
    1. soup girl (was IFcoltransG)
    2. luatic (was Olivia)
    3. jetison333 (was Cow Bandit)
    4. JJRubes (was Amanda)
    5. Olivia (was kimapr)
    6. Cow Bandit (was yui)
    7. kimapr (was luatic)
    8. LyricLy (was vspf)
    9. moshikoi (was LyricLy)
    10. Amanda (was JJRubes)
    11. IFcoltransG (was moshikoi)
    12. razetime
    13. vspf (was soup girl)
    14. yui (was jetison333)
  10. kimapr +3 -4 = -1
    1. Cow Bandit (was IFcoltransG)
    2. Olivia
    3. taswelll (was Cow Bandit)
    4. Amanda
    5. vspf (was yui)
    6. soup girl (was taswelll)
    7. yui (was luatic)
    8. jetison333 (was vspf)
    9. moshikoi (was LyricLy)
    10. JJRubes
    11. razetime (was moshikoi)
    12. LyricLy (was razetime)
    13. IFcoltransG (was soup girl)
    14. luatic (was jetison333)
  11. IFcoltransG +0 -1 = -1
    1. moshikoi +0 -1 = -1
      1. JJRubes +1 -3 = -2
        1. vspf (was IFcoltransG)
        2. moshikoi (was Olivia)
        3. razetime (was Cow Bandit)
        4. taswelll (was Amanda)
        5. luatic (was kimapr)
        6. LyricLy (was yui)
        7. Amanda (was taswelll)
        8. jetison333 (was luatic)
        9. yui (was vspf)
        10. Olivia (was LyricLy)
        11. kimapr (was moshikoi)
        12. Cow Bandit (was razetime)
        13. soup girl
        14. IFcoltransG (was jetison333)
      2. soup girl +0 -2 = -2
        1. Olivia +1 -5 = -4
          1. LyricLy (was IFcoltransG)
          2. yui (was Cow Bandit)
          3. JJRubes (was Amanda)
          4. moshikoi (was kimapr)
          5. Cow Bandit (was yui)
          6. soup girl (was taswelll)
          7. Amanda (was luatic)
          8. vspf
          9. kimapr (was LyricLy)
          10. jetison333 (was JJRubes)
          11. taswelll (was moshikoi)
          12. luatic (was razetime)
          13. razetime (was soup girl)
          14. IFcoltransG (was jetison333)

        entries

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        entry #1

        written by IFcoltransG
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        INDEFATIGABLE.hs ASCII text, with no line terminators
        1
        import Control.Monad; main = getLine >>= (`when` putStrLn "1") . ("f" ==) >> interact (unlines . (++ [""]) . fmap (show . succ . (`mod` 7) . read) . lines) -- breaks when enemy s plays x=7, y=6
        

        entry #2

        written by Olivia
        submitted at
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        stockbird.py Unicode text, UTF-8 text
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        import subprocess, re, time, time # and time again
        square_shape = [[] for _ in list("olivia!")]
        assertively = lambda s: (tell(s), exchange("isready", "readyok"))
        confidante = subprocess.Popen(["stockfish"], text=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
        utterings = lambda: re.sub("1+", lambda n: str(len(n[0])), "k6K/8/" + ''.join("".join(["1pP"[square.count(",")] for square in (rectangle + list("esolangs"))[:8]]) + "1/" for rectangle in square_shape))
        exchange = lambda s, t: (tell(s), ought(t))
        rumours = lambda s: (lambda g: g[1] if g[1] else rumours(s))(gather(s))
        gather = lambda s: (lambda x: (lambda y: (x, y[1] if y else y))(re.match(s + "\n", x)))(get())
        ought = lambda s: list(iter(get, s + "\n"))
        tell = lambda s: (confidante.stdin.write(s + "\n"), confidante.stdin.flush()) # 😳
        get = confidante.stdout.readline
        me = lambda s: (square_shape[s].append("vampire teef ,..,"), print(s + 1))
        u = lambda: square_shape[int(input()) - 1].append("it's me, olivia")
        if input() == 's': u()
        exchange("uci", "uciok")
        while ~ True:
           assertively("ucinewgame")
           assertively("position fen " + utterings() + "moves")
           tell("go depth 1")
           time.sleep(1)
           tell("stop")
           wishes = int(rumours("bestmove [^\s]+?(\d)")) % 7
           try:
               while len(square_shape[wishes]) >= 6: wishes += 1
           except BaseException as e:
               raise BaseException("congratulations, you win!") from e
           me(wishes)
           u()
        

        entry #3

        written by Cow Bandit
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        twelve bees ΒΆ

        bzzzzzzzz


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        connectfour.py ASCII text, with CRLF line terminators
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        import sys
        x=4
        y=[]
        for i in range(695,7045):
            x=(x<<4)-365
            x//=11
            x*=3
            x=abs(x)
            y.append(x%7)
        james=sys.stdin.readline()
        match james:
            case 's\n':   #second
                james=int(sys.stdin.readline())
            case 'f\n'|'a\n'|'H\n'|_: #first/a/H
                pass
        while(True):
            for i in y:
                print(i+True)
                james=int(sys.stdin.readline())
        

        entry #4

        written by Amanda
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        connect-four.c Unicode text, UTF-8 text
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        // Copyleft 2007-2023 <redacted>
        // To compile: `gcc connect-four.c -o connect-four`
        
        #include <stdlib.h>
        #include <math.h>
        #include <stdio.h>
        #include <stdbool.h>
        #include <time.h>
        
        typedef struct Vec2 {
        	int x;
        	int y;
        } Vec2;
        
        int broad[7][6];
        
        #define WIN_DRAW -1
        #define WIN_TBA 0
        #define WIN_PLAYER 1
        #define WIN_COMPUTER 2
        
        bool looping = true;
        int win = WIN_TBA;
        
        void dramaticExit() {
        	for (size_t i = 0; i < 420; i++) { printf("WHAT?????????????????????????"); }
        
        	int lol = 423;
        	printf(lol);
        	// BOOM
        }
        
        void drawboard() {
        	system("clear");
        	for (int i = 5; i > -1; i--) {
        		for (int j = 0; j < 7; j++) {
        			if (broad[j][i] == 1) {
        				printf("| X ");
        			}else if (broad[j][i] == 2) {
        				printf("| O ");
        			} else if (broad[j][i] == 3) {
        				printf("|@@@");
        			} else {
        				printf("|   ");
        			}
        		}
        		printf("|");
        		printf("\n+---+---+---+---+---+---+---+\n");
        	}
        }
        
        
        int sterilize(char car) {
        	switch (car) {
        		case '1': return 1;
        		case '2': return 2;
        		case '3': return 3;
        		case '4': return 4;
        		case '5': return 5;
        		case '6': return 6;
        		case '7': return 7;
        		case 10: return -1;
        		default: dramaticExit(); break;
        	}
        }
        
        bool checkfilled() {
        	for (int i = 5; i > -1; i--) {
        		for (int j = 0; j < 7; j++) {
        			if (broad[j][i]) {
        				return false;
        			}
        		}
        	}
        
        	win = WIN_DRAW;
        	return true;
        }
        
        bool checksuccess(int x, int y, int individual) {
        	bool prevhad = false;
        	int streamlen;
        
        	for (int i = 0; i < 7; i++) {
        		if (!prevhad)
        			streamlen = 0;
        
        		prevhad = (broad[i][y] == individual);
        		if (prevhad) {
        			streamlen++;
        
        			if (streamlen >= 4) return true;
        		}
        	}
        
        	prevhad = false;
        
        	for (int i = 0; i < 6; i++) {
        		if (!prevhad)
        			streamlen = 0;
        
        		prevhad = (broad[x][i] == individual);
        		if (prevhad) {
        			streamlen++;
        
        			if (streamlen >= 4) return true;
        		}
        	}
        
        	prevhad = false;
        
        	Vec2 temp = {x,y};
        
        	while (true) {
        		if (temp.x == 0 || temp.y == 0) {
        			break;
        		}
        
        		temp.x--;
        		temp.y--;
        	}
        
        	for (int i = 0; i < 420; i++) {
        		if (!prevhad)
        			streamlen = 0;
        
        		if (temp.x+i > 7 || temp.y+i > 6) {
        			break;
        		}
        
        		prevhad = (broad[temp.x+i][temp.y+i] == individual);
        		if (prevhad) {
        			streamlen++;
        
        			if (streamlen >= 4) return true; // COOL
        		}
        	}
        
        	prevhad = false;
        	temp.x = x; temp.y = y;
        
        	while (true) {
        		if (temp.x == 6 || temp.y == 0) {
        			break;
        		}
        
        		temp.x++;
        		temp.y--;
        	}
        
        	for (int i = 0; i < 99; i++) {
        		if (!prevhad)
        			streamlen = 0;
        
        		if (temp.x+i < 0 || temp.y+i > 6) {
        			// HMM
        			break;
        		}
        
        		prevhad = (broad[temp.x-i][temp.y+i] == individual);
        		if (prevhad) {
        			streamlen++;
        
        			if (streamlen >= 4) return true;
        		}
        	}
        
        	return false;
        }
        
        Vec2 place(int choice) {
        	if (choice == -1) {
        		// BRUH
        		dramaticExit();
        	}
        
        	int hasplaced = 0;
        
        	for (int i = 0; i < 6; i++) {
        		if (broad[choice-1][i] == 0) {
        			broad[choice-1][i] = 1;
        			Vec2 pos = { choice-1, i };
        			return pos;
        		}
        	}
        }
        
        Vec2 artificialstupidity() {
        	while (true) {
        		int aichoice = (rand()%6)+1;
        
        		for (int i = 0; i < 6; i++) {
        			if (broad[aichoice-1][i] == 0) {
        				broad[aichoice-1][i] = 2;
        				Vec2 pos = { aichoice-1, i };
        				return pos;
        			}
        		}
        	}
        }
        
        int cool() {
        	srand(time(NULL));
        
        	for(int i = 0; i < 7; i++){
        		for(int j = 0; j < 6; j++){
        			broad[i][j] = 0;
        		}
        	}
        
        	char car,intro;
        	int choice;
        	bool playersuccess, aisuccess;
        
        	printf(" β–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ•— β–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ•— β–ˆβ–ˆβ–ˆβ•—   β–ˆβ–ˆβ•—      β–ˆβ–ˆβ•—  β–ˆβ–ˆβ•—\n");
        	printf("β–ˆβ–ˆβ•”β•β•β•β•β•β–ˆβ–ˆβ•”β•β•β•β–ˆβ–ˆβ•—β–ˆβ–ˆβ–ˆβ–ˆβ•—  β–ˆβ–ˆβ•‘      β–ˆβ–ˆβ•‘  β–ˆβ–ˆβ•‘\n");
        	printf("β–ˆβ–ˆβ•‘     β–ˆβ–ˆβ•‘   β–ˆβ–ˆβ•‘β–ˆβ–ˆβ•”β–ˆβ–ˆβ•— β–ˆβ–ˆβ•‘β–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ•—β–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ•‘\n");
        	printf("β–ˆβ–ˆβ•‘     β–ˆβ–ˆβ•‘   β–ˆβ–ˆβ•‘β–ˆβ–ˆβ•‘β•šβ–ˆβ–ˆβ•—β–ˆβ–ˆβ•‘β•šβ•β•β•β•β•β•šβ•β•β•β•β–ˆβ–ˆβ•‘\n");
        	printf("β•šβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ•—β•šβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ•”β•β–ˆβ–ˆβ•‘ β•šβ–ˆβ–ˆβ–ˆβ–ˆβ•‘           β–ˆβ–ˆβ•‘\n");
        	printf(" β•šβ•β•β•β•β•β• β•šβ•β•β•β•β•β• β•šβ•β•  β•šβ•β•β•β•           β•šβ•β•\n");
        	printf("==--==--==--==--==-==--==--==--==--==--==\n");
        	printf("Select if you wan to go first or secoond:\n");
        
        	// can i haz char
        	intro = getchar();
        
        	// artificial stupidity takes one for the team
        	if (intro == 's') {
        		Vec2 aipos = artificialstupidity();
        	}
        
        	while (win == WIN_TBA) {
        		drawboard();
        
        		car = getchar();
        
        		choice = sterilize(car);
        
        		if (choice != -1) {
        			Vec2 placepos = place(choice);
        
        			playersuccess = checksuccess(placepos.x, placepos.y, 1);
        
        			if (playersuccess) {
        				win = WIN_PLAYER;
        				drawboard();
        				break;
        			}
        
        			checkfilled();
        
        			Vec2 aipos = artificialstupidity();
        
        			aisuccess = checksuccess(aipos.x, aipos.y, 2);
        
        			if (aisuccess) {
        				win = WIN_COMPUTER;
        				drawboard();
        				break;
        			}
        
        			checkfilled();
        		}
        	}
        
        	switch (win) {
        		case WIN_DRAW:
        			printf("Nobody won... Thanks for playing.\n");
        			return WIN_DRAW;
        		case WIN_PLAYER:
        			printf("You won... Thanks for playing.\n");
        			return WIN_PLAYER;
        		case WIN_COMPUTER:
        			printf("Computer won... Thanks for playing.\n");
        			return WIN_COMPUTER;
        	}
        }
        
        int main(void)
        {
        /*#ifndef _WIN32
         // I change my mind, but windows cool
        	printf("please install install windows 10: \n");
        	printf("https://www.microsoft.com/de-de/software-download/windows10ISO");
        	return 69;
        #else*/
        	int ret = cool();
        /*#endif*/
        
        	return ret;
        }
        

        entry #5

        written by kimapr
        submitted at
        1 like

        guesses
        comments 0

        post a comment


        dir parafour
        dir src
        bot.rs ASCII text
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        use crate::game::*;
        use rand::seq::IteratorRandom;
        use rayon::prelude::*;
        use std::cmp::Ordering;
        use std::mem::swap;
        
        pub trait Bottable<P: GamePlayer, M: GameMove>: Game<P, M> {
            fn random_move(&self) -> Option<M> {
                let mut rng = rand::thread_rng();
                return self.moves().choose(&mut rng);
            }
            fn best_move(&self) -> Option<M> {
                let p = self.current_player();
                let moves = self.moves().collect::<Vec<M>>();
                if moves.is_empty() {
                    return None;
                } else if moves.len() == 1 {
                    return moves.into_iter().next();
                }
                let mut score: Vec<f64> = vec![0.0; moves.len()];
                let mut weights: Vec<f64> = vec![0.0; moves.len()];
                let mut weights_old: Vec<f64> = vec![0.0; moves.len()];
                loop {
                    (&moves).into_par_iter().zip(&mut score).for_each(|(m, c)| {
                        *c += (0..2048)
                            .into_par_iter()
                            .map(|_| self.clone())
                            .map(|mut game| {
                                let mut m = *m;
                                loop {
                                    match game.apply(m).unwrap() {
                                        MoveOutcome::Win(p2) => break if p2 == p { 1.0 } else { -1.0 },
                                        MoveOutcome::Tie => break 0.0,
                                        MoveOutcome::Pass => (),
                                    }
                                    m = game.random_move().unwrap();
                                }
                            })
                            .sum::<f64>();
                    });
                    let min_score = score.iter().copied().reduce(f64::min).unwrap();
                    (&mut weights)
                        .into_iter()
                        .zip(&score)
                        .for_each(|(c, s)| *c = s - min_score);
                    let total: f64 = weights.iter().copied().sum::<f64>();
                    // normalize scores
                    if total > 0.0 {
                        (&mut weights).into_iter().for_each(|c| *c /= total);
                    } else {
                        (&mut weights).into_iter().for_each(|c| *c = 0.0);
                    }
                    let deviation: f64 = weights
                        .iter()
                        .copied()
                        .zip(weights_old.iter().copied())
                        .max_by(|(a, _), (b, _)| a.partial_cmp(b).unwrap_or(Ordering::Equal))
                        .map(|(s, s_old)| f64::abs(s - s_old))
                        .unwrap();
                    if deviation < (1.0 / f64::powf(2.0, 12.0)) {
                        break Some(
                            moves
                                .into_iter()
                                .zip(weights)
                                .max_by(|(_, a), (_, b)| a.partial_cmp(b).unwrap_or(Ordering::Equal))
                                .unwrap()
                                .0,
                        );
                    }
                    swap(&mut weights, &mut weights_old);
                }
            }
        }
        
        impl<P: GamePlayer, M: GameMove, T: Game<P, M>> Bottable<P, M> for T {}
        
        four.rs ASCII text
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        use crate::game::*;
        use std::fmt;
        
        #[derive(Clone)]
        pub struct Four<P> {
            player: P,
            data: [(u8, [Option<P>; 6]); 7],
            filled: u8,
            done: bool,
        }
        
        impl<P: GamePlayer + fmt::Display> fmt::Display for Four<P> {
            fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
                formatter.write_str("\n")?;
                for y in (0..6).rev() {
                    formatter.write_str(" ")?;
                    for x in 0..7 {
                        match self.data[x].1[y] {
                            Some(p) => formatter.write_fmt(format_args!("{} ", &p)),
                            None => formatter.write_fmt(format_args!(". ")),
                        }?;
                    }
                    formatter.write_str("\n")?;
                }
                formatter.write_str(" ")?;
                for x in 0..7 {
                    formatter.write_fmt(format_args!("{} ", x + 1))?;
                }
                formatter.write_str("\n")?;
                Ok(())
            }
        }
        
        #[derive(Copy, Clone)]
        pub struct FourMove(u8);
        impl GameMove for FourMove {}
        impl fmt::Display for FourMove {
            fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
                (self.0 + 1).fmt(formatter)
            }
        }
        impl TryFrom<u8> for FourMove {
            type Error = ();
            fn try_from(num: u8) -> Result<Self, ()> {
                if num >= 1 && num <= 7 {
                    Ok(Self(num - 1))
                } else {
                    Err(())
                }
            }
        }
        
        pub struct FourMoves<'a, P: 'a> {
            cols: std::iter::Enumerate<std::slice::Iter<'a, (u8, [Option<P>; 6])>>,
            size: usize,
        }
        
        impl<'a, P: GamePlayer> Iterator for FourMoves<'a, P> {
            type Item = FourMove;
            fn next(&mut self) -> Option<Self::Item> {
                let r = self.cols.find(|(_, d)| d.0 < 6).map(|(x, _)| {
                    self.size -= 1;
                    FourMove(x as u8)
                });
                r
            }
            fn size_hint(&self) -> (usize, Option<usize>) {
                (self.size, Some(self.size))
            }
        }
        
        impl<P: GamePlayer> Four<P> {
            const DIRS: [[[i8; 2]; 2]; 4] = [
                [[0, -1], [0, 1]],
                [[-1, 0], [1, 0]],
                [[-1, -1], [1, 1]],
                [[1, -1], [-1, 1]],
            ];
            pub fn new() -> Self {
                Self {
                    player: P::first(),
                    data: [(0, [None; 6]); 7],
                    filled: 0,
                    done: false,
                }
            }
        }
        
        impl<P: GamePlayer> Game<P, FourMove> for Four<P> {
            type Moves<'a> = FourMoves<'a, P> where P: 'a;
            fn current_player(&self) -> P {
                self.player
            }
            fn moves<'a>(&'a self) -> Self::Moves<'a> {
                FourMoves {
                    cols: self.data.iter().enumerate(),
                    size: self.data.iter().filter(|d| d.0 < 6).count(),
                }
            }
            fn apply(&mut self, m: FourMove) -> Option<MoveOutcome<P>> {
                use MoveOutcome::*;
                if self.done {
                    return None;
                }
                let x = m.0;
                if x >= 7 {
                    return None;
                }
                let col = &mut self.data[x as usize];
                if col.0 >= 6 {
                    return None;
                }
                let y = col.0;
                col.1[y as usize] = Some(self.player);
                col.0 += 1;
                self.filled += 1;
                for axis in Self::DIRS.iter() {
                    let mut count = 1;
                    for dir in axis.iter() {
                        let (mut x, mut y) = (x as i8, y as i8);
                        loop {
                            (x, y) = (x + dir[0], y + dir[1]);
                            if x < 0
                                || x >= 7
                                || y < 0
                                || y >= 6
                                || self.data[x as usize].1[y as usize].map_or(true, |p| p != self.player)
                            {
                                break;
                            }
                            count += 1;
                            if count >= 4 {
                                self.done = true;
                                return Some(Win(self.player));
                            }
                        }
                    }
                }
                self.player = self.player.next();
                Some(if self.filled >= 6 * 7 {
                    self.done = true;
                    Tie
                } else {
                    Pass
                })
            }
        }
        
        game.rs ASCII text
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        #[derive(Debug)]
        pub enum MoveOutcome<P> {
            Win(P),
            Tie,
            Pass,
        }
        
        pub trait GamePlayer: Copy + Clone + Eq + Send + Sync {
            fn first() -> Self;
            fn next(&self) -> Self;
        }
        
        pub trait GameMove: Copy + Clone + Send + Sync {}
        
        pub trait Game<P: GamePlayer, M: GameMove>: Clone + Send + Sync {
            type Moves<'a>: Iterator<Item = M> + Sized
            where
                Self: 'a;
            fn current_player(&self) -> P;
            fn moves<'a>(&'a self) -> Self::Moves<'a>;
            fn apply(&mut self, m: M) -> Option<MoveOutcome<P>>;
        }
        
        main.rs ASCII text
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        mod bot;
        mod four;
        mod game;
        mod pl2;
        
        use bot::Bottable;
        use crossterm::tty::IsTty;
        use four::{Four, FourMove};
        use game::*;
        use pl2::BinaryPlayer;
        use std::io::{self, BufRead, Write};
        
        #[derive(Debug)]
        enum Miscommunication {
            Io(io::Error),
            MoveParse,
            ModeParse,
        }
        
        impl From<io::Error> for Miscommunication {
            fn from(error: io::Error) -> Self {
                Self::Io(error)
            }
        }
        
        fn handle_outcome<P: GamePlayer>(mmeee: P, out: MoveOutcome<P>) -> (&'static str, bool) {
            match out {
                MoveOutcome::Win(p) => (
                    if p == mmeee {
                        "YIPPIEE I WINNER"
                    } else {
                        "nuuuu :("
                    },
                    false,
                ),
                MoveOutcome::Tie => ("meh", false),
                MoveOutcome::Pass => ("...", true),
            }
        }
        
        fn apply_debugged<P: GamePlayer, M: GameMove, T: Game<P, M> + std::fmt::Display>(
            mmeee: P,
            game: &mut T,
            m: M,
            istty: bool,
        ) -> bool {
            let (msg, out) = handle_outcome(mmeee, game.apply(m).expect("unexpected move failure"));
            if istty {
                eprintln!("{}{}", &game, msg);
            }
            out
        }
        
        use clap::Parser;
        
        #[derive(Parser, Debug)]
        #[command(author, version, about, long_about = None)]
        struct Args {
            #[arg(short, long)]
            quite: bool,
            #[arg(short, long)]
            load: bool,
        }
        
        fn main() -> Result<(), Miscommunication> {
            let args = Args::parse();
            assert!(
                !(args.quite && args.load),
                "can't be load and quite at once..."
            );
            let mut game: Four<BinaryPlayer> = Four::new();
            let reader = io::stdin();
            let mut stdout = io::stdout();
            let istty = if !(args.quite || args.load) {
                reader.is_tty()
            } else {
                args.load
            };
            let mut reader = reader.lock().lines();
            let mmeee;
            loop {
                if istty {
                    eprint!("> ");
                }
                match reader.next().ok_or(Miscommunication::ModeParse)??.as_str() {
                    "f" => {
                        mmeee = BinaryPlayer::first();
                        let m = game.best_move().expect("first move fail");
                        println!("{}", m);
                        stdout.flush()?;
                        assert!(
                            apply_debugged(mmeee, &mut game, m, istty),
                            "first move fail"
                        );
                        break;
                    }
                    "s" => {
                        mmeee = BinaryPlayer::first().next();
                        if istty {
                            eprintln!("{}", &game);
                        }
                        break;
                    }
                    _ => {
                        if istty {
                            eprintln!("bad mode");
                        }
                    }
                }
            }
            let mut reader = reader.map(|l| l.map(|s| s.parse::<u8>()));
            loop {
                loop {
                    let m = loop {
                        if istty {
                            eprint!("{}> ", game.current_player());
                        }
                        let num = reader.next().ok_or(Miscommunication::MoveParse)??.ok();
                        if let Some(m) = num.map(|num| FourMove::try_from(num).ok()).flatten() {
                            break m;
                        }
                    };
                    let out = game.apply(m);
                    match out {
                        Some(out) => {
                            let (msg, out) = handle_outcome(mmeee, out);
                            if !out {
                                if istty {
                                    eprintln!("{}{}", &game, msg);
                                }
                                return Ok(());
                            }
                            break;
                        }
                        None => (),
                    }
                }
                let m = game.best_move().expect("no moves");
                println!("{}", m);
                stdout.flush()?;
                if !apply_debugged(mmeee, &mut game, m, istty) {
                    break;
                }
            }
            Ok(())
        }
        
        pfdm.rs ASCII text
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        mod four;
        mod game;
        mod pl2;
        use four::*;
        use game::*;
        use pl2::*;
        
        use clap::Parser;
        use std::ffi::{OsStr, OsString};
        use std::io::{self, BufRead, BufReader, Write};
        use std::mem::drop;
        use std::process::{Child, ChildStdin, ChildStdout, Command, Stdio};
        
        struct Bot {
            pub proc: Child,
            pub read: Option<BufReader<ChildStdout>>,
            pub write: Option<ChildStdin>,
        }
        
        impl Bot {
            fn new<S: AsRef<OsStr>>(program: S) -> io::Result<Self> {
                let mut proc = Command::new(program)
                    .stdin(Stdio::piped())
                    .stdout(Stdio::piped())
                    .spawn()?;
                let read = proc.stdout.take().map(|s| BufReader::new(s));
                let write = proc.stdin.take();
                Ok(Self { proc, read, write })
            }
        }
        
        #[derive(Parser, Debug)]
        #[command(author, version, about, long_about = None)]
        struct Args {
            bot_x: OsString,
            bot_o: OsString,
        }
        
        fn main() -> io::Result<()> {
            let args = Args::parse();
            println!("Player X: {:#?}", &args.bot_x);
            println!("Player O: {:#?}", &args.bot_o);
            let mut bots = [Bot::new(&args.bot_x)?, Bot::new(&args.bot_o)?];
            if let Some(s) = &mut bots[0].write {
                s.write(b"f\n")?;
            }
            if let Some(s) = &mut bots[1].write {
                s.write(b"s\n")?;
            }
            let mut game: Four<BinaryPlayer> = Four::new();
            let mut line = String::new();
            let mut stdout = io::stdout();
            let mut bot_read = bots
                .iter_mut()
                .map(|bot| bot.read.take().expect("no stdin"))
                .collect::<Vec<_>>();
            let mut bot_write = bots
                .iter_mut()
                .map(|bot| bot.write.take().expect("no stdout"))
                .collect::<Vec<_>>();
            'iter: for (from, to) in [(0, 1), (1, 0)].into_iter().cycle() {
                let from = &mut bot_read[from];
                let to = &mut bot_write[to];
                let pl = game.current_player();
                match 'read: {
                    line.clear();
                    print!("waiting for {}... ", pl);
                    stdout.flush()?;
                    if from.read_line(&mut line).is_err() {
                        println!("fail");
                        break 'read None;
                    }
                    println!("output: {:?}", &line);
                    to.write(&line.as_bytes())?;
                    to.flush()?;
                    match line.strip_suffix("\n").unwrap().parse::<u8>() {
                        Ok(m) => FourMove::try_from(m).ok(),
                        Err(_) => None,
                    }
                } {
                    Some(m) => {
                        let out = match game.apply(m) {
                            Some(out) => {
                                print!("{}: {}.{}", pl, m, &game);
                                out
                            }
                            None => {
                                println!("{}: invalid move ({}).", pl, m);
                                println!("{} wins.", pl.next());
                                break 'iter;
                            }
                        };
                        match out {
                            MoveOutcome::Win(p) => {
                                println!("{} wins.", p);
                                break 'iter;
                            }
                            MoveOutcome::Tie => {
                                println!("Tie.");
                                break 'iter;
                            }
                            MoveOutcome::Pass => {
                                println!("...");
                            }
                        }
                    }
                    None => {
                        println!("{} generated invalid output: {:?}", pl, &line);
                        println!("{} wins.", pl.next());
                        break 'iter;
                    }
                }
            }
            drop((bot_read, bot_write));
            let exits: Vec<_> = bots
                .into_iter()
                .map(|c| c.proc)
                .map(|mut c| c.wait())
                .collect();
            for e in exits {
                e?;
            }
            Ok(())
        }
        
        pl2.rs ASCII text
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        use crate::game::*;
        use std::fmt;
        
        #[derive(Copy, Clone, Eq, PartialEq, Debug)]
        pub enum BinaryPlayer {
            X,
            O,
        }
        
        impl fmt::Display for BinaryPlayer {
            fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
                formatter.write_str(match self {
                    Self::X => "X",
                    Self::O => "O",
                })
            }
        }
        
        impl GamePlayer for BinaryPlayer {
            fn first() -> Self {
                Self::X
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        checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
        dependencies = [
         "winapi-i686-pc-windows-gnu",
         "winapi-x86_64-pc-windows-gnu",
        ]
        
        [[package]]
        name = "winapi-i686-pc-windows-gnu"
        version = "0.4.0"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
        
        [[package]]
        name = "winapi-x86_64-pc-windows-gnu"
        version = "0.4.0"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
        
        [[package]]
        name = "windows-sys"
        version = "0.48.0"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
        dependencies = [
         "windows-targets",
        ]
        
        [[package]]
        name = "windows-targets"
        version = "0.48.5"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
        dependencies = [
         "windows_aarch64_gnullvm",
         "windows_aarch64_msvc",
         "windows_i686_gnu",
         "windows_i686_msvc",
         "windows_x86_64_gnu",
         "windows_x86_64_gnullvm",
         "windows_x86_64_msvc",
        ]
        
        [[package]]
        name = "windows_aarch64_gnullvm"
        version = "0.48.5"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
        
        [[package]]
        name = "windows_aarch64_msvc"
        version = "0.48.5"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
        
        [[package]]
        name = "windows_i686_gnu"
        version = "0.48.5"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
        
        [[package]]
        name = "windows_i686_msvc"
        version = "0.48.5"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
        
        [[package]]
        name = "windows_x86_64_gnu"
        version = "0.48.5"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
        
        [[package]]
        name = "windows_x86_64_gnullvm"
        version = "0.48.5"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
        
        [[package]]
        name = "windows_x86_64_msvc"
        version = "0.48.5"
        source = "registry+https://github.com/rust-lang/crates.io-index"
        checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
        
        Cargo.toml ASCII text
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        [package]
        name = "parafour"
        description = "very Smart connect-four bot"
        version = "0.1.0"
        edition = "2021"
        
        [dependencies]
        clap = { version = "4.4.6", features = ["derive"] }
        crossterm = "0.27.0"
        rand = "0.8.5"
        rayon = "1.8.0"
        
        [[bin]]
        name = "pfdm"
        path = "src/pfdm.rs"
        

        entry #6

        written by yui
        submitted at
        0 likes

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        post a comment


        amogus.js ASCII text
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        // amogus
        
                    void((t,e)=>process.stdin.on       
               ("data",s=>{10==s[s.length-1]&&(e&&(e=>!
           t[e]||t[e].length>=6?                       
           process.exit(2):(t[e].push(1),(t=>t.length&&
           (t=>(process.stdout.write(t[1]+1+"\n"),t[0].
           push(727)))(t[~~(Math.random()*t.length)])||
           process.exit(1))(t.map((t,e)=>[t,e]).filter(
           t=>t[0].length<6))))(s[s.length-2]-49)||(102
           ==s[s.length-2]&&(e=>(process.stdout.write(e
               +1+"\n"),t[e].push(727)))(~~(Math.random
               ()*t.length)                ),e=1))}))([
               [],[],[],[],                [],[],[]],0)
        

        entry #7

        written by taswelll
        submitted at
        1 like

        guesses
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        cg47.apls Unicode text, UTF-8 text
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        h w←6 7
        gp←gm←h w⍴0
        positions←{h w←⍺ β‹„ a b←¯1+⍴⍡ β‹„ ,[⍳2](1-⍳w-b)⌽⍀0 99⊒(1-⍳h-a)βŠ–β€0 99⊒h w↑⍡}
        graβ†βŠƒβͺ/h w∘positionsΒ¨(,β₯βŠ‚βˆ˜β‰β¨1 4⍴1),(,β₯βŠ‚βˆ˜βŒ½β¨βˆ˜.=⍨⍳4)
        movecol←{gp gm←⍡⋄(gpβ‰ gm)(⍉(-⍀⍴↑,∘1)@⍺⍉gm)}
        disp←{'.βŒΊβŽ•'[βŠƒ1++⌿⍡]}
        invβ†βŠƒ(β‰ ,β₯βŠ‚βŠ’)/
        threats←{gp gm←⍡ β‹„ ⍺←h w⍴0 β‹„ gra⌿⍨~gra∨/⍀,⍀∧⍀2⊒⍺∨gpβ‰ gm}
        rule←{s←⍺ ⍡⍡⍀2 99⍀99 2⊒bβ†βŠƒβΊβΊ/⍡⋄(∨/s)∘⌿¨s b}
        
        claimeven←{
            m←2⌿⍀2⊒(hΓ·2)w positions 1 1⍴1      ⍝ each possible position
            m⌿⍨~m∨/⍀,⍀∧⍀2⊒⍡                    ⍝ keep valid ones
        }rule(∨/⍀,(⍉w h⍴2|⍳h)∧∧)               ⍝ threats solved, (βŠƒβ΄b)(βŠƒβ΄βΊ)≑⍴x
        baseinverse←{(,∘.<⍨⍳w)⌿,[⍳2]+⍀99 2⍀2 99⍨⊒ 1 3 2⍉(∘.=⍨⍳w)∘.×⍀1(2</,∘1)⍉⍡}rule(2=+/⍀,⍀∧)
        vertical←{
            m←(Β―1βŠ–h↑2⌿⊒)⍀2⊒(Β―1+hΓ·2)w positions 1 1⍴1
            m⌿⍨~m∨/⍀,⍀∧⍀2⊒⍡
        }rule(2=+/⍀,⍀∧)
        aftereven←{
            m←((-h)↑2|⍳h-2)⍀⍀2⊒(Β―1+hΓ·2)w positions 1 4⍴1
            βŠ–β€(βˆ¨β€β€βŠ–β΅<⊒)⍀2⊒m⌿⍨(⍺∘∧⍱β₯(∨/,)⍡∧¯1βŠ–β΅<⊒)⍀2⊒m
        }rule(βŠ’β‰‘β₯(∨⌿)∧)
        table β†βŠ‚1
        table,β†βŠ‚1 1
        table,β†βŠ‚1 1 1
        table,β†βŠ‚1 1 1  3
        table,β†βŠ‚2 1 1 12  4
        table,β†βŠ‚2 1 1 12  4  4
        table,β†βŠ‚1 1 1  1 12 12 1
        table,β†βŠ‚1 1 1  3 23 12 1 3
        table,β†βŠ‚1 1 1  3 23 12 1 3 3
        table ←(βŠ’βŒˆβ‰)↑table
        pairable←{a b←⍡
             ⍺=1:∧/,a⍲b
             ⍺=3:∧/a(∧/β€β²βˆ¨β‰‘β€1)β₯⍉b
             ⍺=13:(pairable∘1∧pairable∘3)a b 
        }
        eval←{⍺←h w⍴0
            rules←{(⍺ claimeven ⍡)(⍺ baseinverse ⍡)(⍺ vertical ⍡)(⍺ aftereven ⍡)}
            slvs sqrs typs←(βͺ⌿,βˆ˜βŠ‚βˆ˜βΈ(β‰’Β¨βŠ’/))↑⍺(threats rules⊒)⍡
            slvs sqrs typs←(~⍺∨/⍀,⍀∧⍀2⊒sqrs)∘⌿¨slvs sqrs typs
            0=β‰’slvs:0
            conf←~(∘.(⌷∘table⍀,)⍨typs)pairableΒ¨(βŠ‚,β₯βŠ‚)⍀2 99⍀99 2⍨sqrs
            conf thing slvs
        }
        thing←{βŽ•β†β΄Β¨βΊ ⍡  ⍝ ⍺:CONFlict(rulesΓ—rules) ⍡:SoLVeS(rulesΓ—threats)
            0=⊒/⍴⍡:1          ⍝ no threats
            ~∨/m←⍡[;βŠƒβ‹+⌿⍡]:0  ⍝ m: mask of rules that solve hardest threat
            r t←~(∨⌿m∘⌿)¨⍺ ⍡  ⍝ remove rules/threats solved by m 
            (r/⍺)βˆ‡β₯(r∘⌿)t/⍡
        }
        oddthreat←{
            t←threats inv (gp gm←⍡)
            u←t⌿⍨3=t+/⍀,⍀∧⍀2⊒gpβ‰ gm
            ⍝ unsure why i need this, copied from somewhere else
            btm←(-⍀⍴↑βͺ∘0)βŠ–βˆ¨β€βŠ–βˆ¨βŒΏ(2<⌿0∘βͺ)⍀2 threats ⍡
            βŠ–βˆ¨β€βŠ–βˆ¨βŒΏbtm<⍀2⊒(2<⌿1βͺ⍨gm)<⍀2⊒(⍉w h⍴2|⍳h)<⍀2⊒u>⍀2⊒gpβ‰ gm
        }
        eval2←{β‰ /,2βŠƒβ΅: {∨/,ot←oddthreat⍡:ot eval⍡⋄0}⍡⋄ -eval⍡}
        ab←{a b←⍺
            0β‰ v←eval2 ⍡:v
            moves←(movecol∘⍡¨⍳w)~βŠ‚inv ⍡
            β‰ /,2βŠƒβ΅:Β―1 a{v a←⍺
                0=≒⍡:v
                b<u←v⌈a b abβŠƒβ΅:u
                u(u⌈a)βˆ‡ 1↓⍡
            }moves
            1 b{v b←⍺
                0=≒⍡:v
                b<u←v⌊a b abβŠƒβ΅:u
                u(u⌊b)βˆ‡ 1↓⍡
            }moves
        }
        
        {βŽ•β†βžβŠ’?7β‹„βˆ‡0}0
        

        entry #8

        written by luatic
        submitted at
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        bot.nim ASCII text
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        import std/bitops
        import std/strutils
        import std/options
        
        type
            X = range[0'u8..6'u8]
            Y = range[0'u8..5'u8]
            Stack = set[Y]
            Mask = array[X, Stack]
            Board = tuple[ours: Mask, theirs: Mask]
        
        type RowBitset = range[0'u8..127'u8]
        
        proc winRowUtil (row: RowBitset): bool =
            (row and 0b0001111) == 0b0001111 or
            (row and 0b0011110) == 0b0011110 or
            (row and 0b0111100) == 0b0111100 or
            (row and 0b1111000) == 0b1111000
        
        var winRows: set[RowBitset]
        for i in RowBitset(0)..127'u8:
            if winRowUtil(i):
                winRows.incl i
        
        proc winRow (row: RowBitset): bool =
            row in winRows
        
        proc row (m: Mask, y: Y): RowBitset =
            for x in X(0)..6:
                if y in m[x]:
                    result = result or (1'u8 shl x)
        
        proc ascDiag (m: Mask, x: X, y: Y): RowBitset =
            var j = 0'u8
            for i in -int8(x.min(y))..int8((6-x).min(5-y)):
                if Y(int8(y) + i) in m[X(int8(x) + i)]:
                    result = result or (1'u8 shl j)
                j += 1
        
        proc descDiag (m: Mask, x: X, y: Y): RowBitset =
            var j = 0'u8
            for i in -int8((6-x).min(y))..int8(x.min(5-y)):
                if Y(int8(y) + i) in m[X(int8(x) - i)]:
                    result = result or (1'u8 shl j)
                j += 1
        
        proc winMove (m: Mask, x: X, y: Y): bool =
            winRow(cast[RowBitset](m[x])) or
            winRow(m.row(y)) or
            winRow(m.descDiag(x, y)) or
            winRow(m.ascDiag(x, y))
        
        proc top (board: Board, x: X): Option[Y] =
            let used = cast[uint8](board.ours[x] + board.theirs[x])
            if used == 0:
                return Y(0).some
            let y = 8 - used.countLeadingZeroBits
            if y > 5:
                return Y.none
            return Y(y).some
        
        #[
        import std/unittest
        suite "bot":
            test "winRow":
                check(winRow 0b1111000)
                check(winRow 0b0111100)
                check(winRow 0b0011110)
                check(winRow 0b0001111)
                check(not winRow 0b0001101)
            let m: Mask = [
                {1, 2, 3},
                {0, 3},
                {1, 2},
                {0, 1},
                {0, 4},
                {3, 4, 5},
                {1, 2, 3},
            ]
            test "row":
                check(m.row(0) == 0b0011010)
                check(m.row(1) == 0b1001101)
            test "ascDiag":
                check(m.ascDiag(1, 1) == 0b110100)
            test "descDiag":
                check(m.descDiag(1, 1) == 0b100)
            test "winMove":
                let m: Mask = [{1, 2, 3, 4}, {}, {}, {}, {}, {}, {}]
                check(m.winMove(0, 4))
            test "top":
                check((ours: m, theirs: m).top(5) == none(Y))
                check((ours: m, theirs: m).top(1) == some(Y(4)))
        ]#
        
        proc applyMove (board: var Board, x: X, ours: bool) =
            let y = board.top(x).get
            if ours:
                board.ours[x].incl y
            else:
                board.theirs[x].incl y
        
        proc maximize (board: Board, depth: uint8): tuple[score: float, move: X] =
            if depth > 7:
                return
            result.score = -1
            var foundValidMove = false
            for x in X(0)..6:
                let top = board.top(x)
                if top.isNone:
                    continue
                let y = top.unsafeGet
                foundValidMove = true
                # Pick a valid move, even if it may seem futile.
                if result.score == -1:
                    result.move = x
                var ours = board.ours
                ours[x].incl y
                if ours.winMove(x, y):
                    return (score: 1, move: x)
                let min = -(ours: board.theirs, theirs: ours).maximize(depth + 1).score
                # Indirect win forcable?
                if min == 1:
                    return (score: 1, move: x)
                if min > result.score:
                    result.score = min
                    result.move = x
            # Returns an invalid move value (0) but meh
            if not foundValidMove:
                result.score = 0
                
        
        var board: Board
        
        proc makeMove () =
            let move = board.maximize(0).move
            board.applyMove(move, true)
            echo $(move + 1)
        
        let line = stdin.readLine
        if line == "f":
            makeMove()
        else:
            assert line == "s"
        
        while true:
            let move = stdin.readLine.parseUInt()
            assert move >= 1 and move <= 7
            board.applyMove(X(move - 1), false)
            makeMove()
        
        client.nim ASCII text
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        import os
        import osproc
        import std/strutils
        import std/streams
        
        type
            Spot = enum Free, Ours, Theirs
            Stack = array[6, Spot]
            Board = array[7, Stack]
        
        var board: Board
        var winner: Spot = Free
        
        proc printBoard =
            for row in countdown(5, 0):
                for col in 0..6:
                    const spotChar: array[Spot, char] = ['.', 'O', 'X']
                    stdout.write spotChar[board[col][row]]
                stdout.write '\n'
            stdout.flushFile()
        
        proc invalidMove (move: uint): bool =
            move < 1 or move > 7 or board[move - 1][^1] != Free
        
        proc inBounds (x, y: int): bool =
            x >= 0 and x < 7 and y >= 0 and y < 6
        
        proc countDir(x, y: uint, dx, dy: int): uint =
            var count: uint = 0
            var x = int(x)
            var y = int(y)
            let expected = board[x][y]
            while true:
                x += dx
                y += dy
                if not inBounds(x, y) or board[x][y] != expected:
                    break
                count += 1
            return count
        
        proc checkWinDir (x, y: uint, dx, dy: int): bool =
            return countDir(x, y, -dx, -dy) + 1 + countDir(x, y, dx, dy) >= 4
        
        proc checkWin (x, y: uint): bool =
            checkWinDir(x, y, 0, 1) or checkWinDir(x, y, 1, 0) or checkWinDir(x, y, 1, 1)
        
        var moves = 0
        proc makeMove (move: uint, player: Spot) =
            assert player != Free
            for y, spot in board[move]:
                if spot == Free:
                    board[move][y] = player
                    if checkWin(move, uint(y)):
                        winner = player
                    moves += 1
                    break
        
        var bot = startProcess(paramStr(1), options = {})
        var botIn = bot.inputStream
        var botOut = bot.outputStream
        proc sendCommand (command: string) =
            botIn.writeLine command
            botIn.flush
        sendCommand "s" # hoomans go first!
        
        while true:
            printBoard()
            if winner != Free or moves == 6*7:
                break
            block:
                echo "Make a move:"
                let move = stdin.readLine.parseUInt
                if invalidMove(move):
                    echo "Invalid move"
                    continue
                makeMove(move - 1, Ours)
                sendCommand $move
            if winner == Free:
                var line: string
                assert botOut.readLine line
                let move = line.parseUInt
                if invalidMove(move):
                    echo "Invalid move from bot"
                    break # can't resume with a broken bot
                makeMove(move - 1, Theirs)
        bot.terminate
        bot.close
        
        const outcome: array[Spot, string] = ["Draw", "You win!", "They win!"]
        echo outcome[winner]
        
        help.txt ASCII text
        1
        2
        Compile bot (or client): nim compile -d:release bot
        Use client: ./client bot
        

        entry #9

        written by vspf
        submitted at
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        theducksong.py ASCII text, with CRLF line terminators

        entry #10

        written by LyricLy
        submitted at
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        hair.py ASCII text
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        import time
        import random
        from multiprocessing.shared_memory import ShareableList
        
        
        def get_or_create(name):
            try:
                return ShareableList(name=name)
            except:
                return ShareableList(sequence=[0] + [b"-"*256]*256, name=name)
        
        def play_random_move(heights):
            o = random.choice([i for i, x in enumerate(heights, start=1) if x != 6])
            heights[o-1] += 1
            print(o)
        
        def play_randomly(go_first):
            """Boring agent used as a fallback when we can't find a partner (me irl)"""
            heights = [0]*7
            if go_first:
                play_random_move(heights)
            while True:
                i = int(input())
                heights[i-1] += 1
                play_random_move(heights)
        
        firsts = get_or_create("cg45_hair_firsts")
        seconds = get_or_create("cg45_hair_seconds")
        
        are_first = input() == "f"
        
        theirs, ours = (firsts, seconds) if are_first else (seconds, firsts)
        
        if not theirs[0]:
            channel = ShareableList([None])
            ours[1+ours[0]] = channel.shm.name
            ours[0] += 1
            for _ in range(10):
                time.sleep(0.5)
                if channel[0]:
                    break
            else:
                play_randomly(are_first)
            channel[0] = None
        else:
            theirs[0] -= 1
            channel = ShareableList(name=theirs[theirs[0]+1])
            channel[0] = 1
            while channel[0] is not None:
                pass
        
        def play_move():
            while channel[0] is None:
                pass
            print(channel[0])
            channel[0] = None
        
        if are_first:
            play_move()
        while True:
            channel[0] = int(input())
            while channel[0] is not None:
                pass
            play_move()
        

        entry #11

        written by JJRubes
        submitted at
        2 likes

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        dir jeu
        Case.java Unicode text, UTF-8 text
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        package jeu;
        
        public class Case {
        
            char nature;
        
            /**
             * Constructeur de Case
             *
             * @param nature_
             */
            Case (char nature_) {
                this.nature = nature_;
            }
        
            /**
             * get la nature d'une case
             *
             * @return nature de la case
             */
            public char getNature() {
                return this.nature;
            }
        
            /**
             * Permet de donner/changer la nature d'une case
             *
             * @param nat la nature Γ  donner
             */
            public void setNature(char nat) {
                this.nature = nat;
            }
        }
        
        Conversion.java ASCII text
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        package jeu;
        
        public class Conversion {
        
            /**
             * Retourne le char d'une case en String (ex: A10 --> A)
             *
             * @param caseEnString la case en String
             * @return x le char de la case
             */
            public char getCharFromString(String caseEnString){
                char x = ' ';
                if (caseEnString.length() == 2) {
                    x = caseEnString.charAt(0);
                } else if (caseEnString.length() == 3) {
                    x = caseEnString.charAt(0);
                }
                return x;
            }
        
            /**
             * Retourne l'entier d'une case en String (ex: A10 --> 10)
             *
             * @param caseEnString la case en String
             * @return y
             */
            public int getIntFromString(String caseEnString){
                int y = 0;
                if (caseEnString.length() == 2) {
                    y = Integer.parseInt(caseEnString.substring(1));
                } else if (caseEnString.length() == 3) {
                    y = Integer.parseInt(caseEnString.substring(1, 3));
                }
                return y;
            }
        
            public void formatCoupJoues(String coord1, String coord2, String nom, String nom2){
                String indent = "              "; // 20 spaces.
                int l;
        
                int add1 = nom.length()/2;
                int add2 = nom2.length()/2;
        
                if (nom.length() == 1){
                    nom = " " + nom + indent.charAt(0);
                    add1 = 1;
                } else if (nom.length() == 2){
                    nom += indent.charAt(0);
                }
        
                l = nom2.length();
                nom2 = " " + nom2;
                if (l == 1){
                    nom2 += " |";
                    add2 = 1;
                } else if (l == 2){
                    nom2 += indent.substring(0, 2) + "|";
                } else {
                    nom2 += " |";
                }
        
                l = coord1.length();
                coord1 = indent.substring(0, add1) + coord1 + indent.substring(0, add1);
                if(l == 2){
                    coord1 += " ";
                }
        
                l = coord2.length();
                coord2 = indent.substring(0, add2) + coord2 + indent.substring(0, add2);
                if (l == 2){
                    coord2 += " ";
                }
        
                System.out.println("| "+nom+" |"+nom2);
                System.out.println("|"+coord1+"|"+coord2+"|\n");
            }
        }
        
        IA.java Unicode text, UTF-8 text
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        package jeu;
        
        import java.util.ArrayList;
        import java.util.Random;
        
        public class IA {
        
            final String name;
            private final Random random = new Random();
        
            /**
             * Le constructeur de la classe IA
             *
             * @param name_ le nom de l'IA
             */
            IA(String name_) {
                this.name = name_;
            }
        
            /**
             * Renvoie le nom de l'IA
             *
             * @return le nom de l'IA
             */
            public String getName() {
                return this.name;
            }
        
            /**
             * Permet Γ  l'IA de jouer un coup choisi au hasard choisi parmi les coups possibles
             *
             * @param coupsPossibles la liste des coups possibles
             * @return un coup choisi au hasard
             */
            public Case joueUnCoupRandom(ArrayList<Case> coupsPossibles) {
                return coupsPossibles.get(random.nextInt(coupsPossibles.size()));
            }
        }
        
        Joueur.java Unicode text, UTF-8 text
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        package jeu;
        import java.util.ArrayList;
        import java.util.List;
        
        public class Joueur {
        
            String nomJoueur;
            int numJoueur;
            char natureJoueur;
            boolean isIA;
            List<String> coupJoues = new ArrayList<>();
        
            /**
             * Le constructeur de la classe Joueur
             *
             * @param nomJoueur le nom de joueur
             * @param nbJoueur le numΓ©ro du joueur
             * @param natureJoueur le symbole qu'utilisera le joueur
             * @param status est-ce que le joueur est une IA ou pas
             */
            Joueur(String nomJoueur, int nbJoueur, char natureJoueur, boolean status) {
                this.nomJoueur = nomJoueur;
                this.numJoueur = nbJoueur;
                this.natureJoueur = natureJoueur;
                this.isIA = status;
            }
        
            /**
             * Ajoute un coup aux coups jouΓ©s du joueur
             *
             * @param coupJoue le coup jouΓ©
             */
            public void addCoupJoues(String coupJoue){
                this.coupJoues.add(coupJoue);
            }
        
            /**
             * Change le nom du joueur
             *
             * @param nomJoueur le nom Γ  utiliser
             */
            public void setNomJoueur(String nomJoueur){
                this.nomJoueur = nomJoueur;
            }
        
            /**
             * Renvoie le nom du joueur
             *
             * @return le nom du joueur
             */
            public String getNomJoueur(){
                return this.nomJoueur;
            }
        
            /**
             * Change le numΓ©ro du joueur
             *
             * @param numJoueur le numΓ©ro Γ  utiliser
             */
            public void setNumJoueur(int numJoueur){
                this.numJoueur = numJoueur;
            }
        
            /**
             * Renvoie le numΓ©ro du joueur
             *
             * @return le numΓ©ro du joueur
             */
            public int getNumJoueur(){
                return this.numJoueur;
            }
        
            /**
             * Renvoie la nature du joueur
             *
             * @return la nature du joueur
             */
            public char getNature() {
                return this.natureJoueur;
            }
        
            /**
             * Renvoie le statut du joueur
             *
             * @return le statut du joueur
             */
            public boolean getStatus() {
                return isIA;
            }
        
            /**
             * Change le statut du joueur
             *
             * @param status le statut Γ  utiliser
             */
            public void setStatus(boolean status) {
                this.isIA = status;
            }
        
        }
        
        Main.java Unicode text, UTF-8 text
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        package jeu;
        
        import java.util.ArrayList;
        import java.util.Scanner;
        
        public class Main {
        
            static private final Scanner in = new Scanner(System.in);
            static private char x;
            static private int y;
            static private boolean boot = true;
            static private char nature = 'X';
            static private Joueur jH = new Joueur("Joueur1", 0, 'X', false);
            static private Joueur j2;
            static private IA playerIA = new IA("IA");
            static private int playersTurn = 1;
        
            /**
             * La fonction Main du programme
             * 
             * @param args
             */
            public static void main(String[] args) {
                UI m = new UI();
                Screen s = new Screen(bootMain()); // max 26 because the alphabet is 26 char long :)
        
                s.clear();
                s.display(0);
        
                System.out.println("* Menu *");
                while (true) {
                    String input = "";
                    if (playersTurn == 1) {
                        input = m.userInterface(jH.nomJoueur, jH.coupJoues, s);
                    } else if (playersTurn == 2){
                        if (j2.isIA) {
                            input = Screen.getStringFromCase(playerIA.joueUnCoupRandom(s.getAllPossiblePlays(false)));
                        } else {
                            input = m.userInterface(j2.nomJoueur, j2.coupJoues, s);
                        }
                    }
        
                    try {
                        if (input.length() == 2) {  //Formate l'entrΓ©e utlisateur en Char et int
                            x = input.charAt(0);
                            y = Integer.parseInt(input.substring(1));
                        } else if (input.length() == 3) {
                            x = input.charAt(0);
                            y = Integer.parseInt(input.substring(1, 3));
                        }
                    } catch (Exception e){
                        System.out.println("La valeur entrΓ©e n'est pas valable");
                    }
        
        
                    if (s.checkUserInput(x, y)) {
                        if (playersTurn == 1) {
                            jH.addCoupJoues(input);
                            nature = jH.natureJoueur;
                            playersTurn++;
                        } else if (playersTurn == 2) {
                            if (j2.isIA) {
                                System.out.println("L'IA joue : " + input);
                            }
                            j2.addCoupJoues(input);
                            nature = j2.natureJoueur;
                            playersTurn--;
                        }
        
                        s.setPoint(x, y, nature);
                        s.display(0);
                        s.getAllPlayedCase();
                    }
                    s.checkIfWin();
                }
            }
        
            /**
             * Est utilisΓ© une fois au demarage de chaque partie pour choisir la taille du plateau et le nombre de joueurs
             *
             * @return 0
             */
            public static int bootMain() {
                UI m = new UI();
                if (boot) {
                    boot = false;
                    intro();
                    return (m.taillePlateau());
                }
                return 0;
            }
        
            /**
             * Supprime tout les coups jouΓ©s par les joueurs
             */
            public void clearCoupJoues(){
                jH.coupJoues.clear();
                j2.coupJoues.clear();
            }
        
            /**
             * Introduction + Choix de l'adversaire et des noms
             */
            public static void intro() {
                UI m = new UI();
                String adversaire;
                boolean boucle = true;
        
                    System.out.println("\n\n");
                    System.out.println("                ** Bienvenue au jeu du Gomoku ** \n"+
                                        "-Pour gagner il faut aligner 5 pions dans n'importe quel direction\n"+
                                        "-Si jamais vous Γͺtes bloquΓ©(e) vous pouvez utiliser la commande /aide \n\n"+
                                        "Aller, c'est parti !\n\n"+
                                        "Voulez-vous jouer contre l'ordinateur(O) ou contre un humain(H) ? ");
                while (boucle) {
                    adversaire = in.nextLine().trim();
                    try {
                        char choixAdversaire = adversaire.charAt(0);
                        if (choixAdversaire == 'H' || choixAdversaire == 'h') {
                            j2 = new Joueur("Joueur2", 1, 'O', false);
                            jH.nomJoueur = m.choixNomJoueur(1);
                            j2.nomJoueur = m.choixNomJoueur(2);
                            boucle = false;
                        } else if (choixAdversaire == 'O' || choixAdversaire == 'o') {
                            j2 = new Joueur(playerIA.getName(), 1, 'O', true);
                            jH.nomJoueur = m.choixNomJoueur(1);
                            j2.nomJoueur = j2.getNomJoueur();
                            boucle = false;
                        } else {
                            System.out.println("erreur: la valeur entrΓ©e n'est pas valable");
                        }
                    } catch (Exception e) {
                        System.out.println("erreur: la valeur entrΓ©e n'est pas valable");
                        //System.out.println("erreur: la valeur entrΓ©e n'est pas valable "+e);
                    }
                }
            }
        
            public String getJoueurFromChar(char symbole) {
                if (symbole == jH.getNature()) {
                    return jH.getNomJoueur();
                } else {
                    return j2.getNomJoueur();
                }
            }
        
            /**
             * Affiche tout les coups jouΓ©s de chaques joueurs Γ  la fin
             */
            public void afficherToutLesCoupsJoues(){
                System.out.println("Tout les coups jouΓ©s dans cette partie : ");
        
                ArrayList<String> coupJoues = new ArrayList<>();
                String nom = jH.nomJoueur;
                String nom2 = j2.nomJoueur;
                String indent = "              "; // 20 spaces.
                int l;
                int add1 = nom.length()/2;
                int add2 = nom2.length()/2;
        
                if (nom.length() == 1){
                    nom = " " + nom + indent.charAt(0);
                    add1 = 1;
                } else if (nom.length() == 2){
                    nom += indent.charAt(0);
                }
        
                l = nom2.length();
                nom2 = " " + nom2;
                if (l == 1){
                    nom2 += " |";
                    add2 = 1;
                } else if (l == 2){
                    nom2 += indent.substring(0, 2) + "|";
                } else {
                    nom2 += " |";
                }
                System.out.println("| "+nom+" |"+nom2);
        
                coupJoues.addAll(jH.coupJoues);
                coupJoues.addAll(j2.coupJoues);
        
                for (int p1 = 0, p2 = (jH.coupJoues).size(); p1 < (jH.coupJoues).size() || p2 < (jH.coupJoues).size()+(j2.coupJoues).size(); p1++, p2++) {
        
                    String coord1 = "";
                    String coord2 = "";
        
                    if (p2 == (jH.coupJoues).size()+(j2.coupJoues).size()) {
                        coord1 = coupJoues.get(p1);
                    }
                    else if(p1 == (jH.coupJoues).size()) {
                        coord2 = coupJoues.get(p2);
                    }
                    else {
                        coord1 = coupJoues.get(p1);
                        coord2 = coupJoues.get(p2);
                    }
        
                    l = coord1.length();
                    coord1 = indent.substring(0, add1) + coord1 + indent.substring(0, add1);
                    if(l == 2) coord1 += " ";
        
                    l = coord2.length();
                    coord2 = indent.substring(0, add2) + coord2 + indent.substring(0, add2);
                    if (l == 2) coord2 += " ";
        
        
                    if (p2 == (jH.coupJoues).size()+(j2.coupJoues).size()) System.out.println("|"+coord1+"| "+indent.substring(0,(j2.nomJoueur).length()+1)+" |");
                    else if(p1 == (jH.coupJoues).size()) System.out.println("| "+indent.substring(0,(jH.nomJoueur).length())+" |"+coord2+"|");
                    else System.out.println("|"+coord1+"|"+coord2+"|");
        
                }
            }
        }
        
        Screen.java Unicode text, UTF-8 text
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        package jeu;
        
        import java.util.ArrayList;
        import java.util.Scanner;
        
        public class Screen {
        
            private Main m = new Main();
            private Conversion c = new Conversion();
            static private Scanner in = new Scanner(System.in);
        
            private final int size;
            private static Case[][] image;
        
            private boolean win = false;
        
            private final static char[] alphabet = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
                    'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };
                    
            String[] direction = {
                "NORD-OUEST",
                "NORD",
                "NORD-EST",
                "EST", 
                "SUD-EST",
                "SUD",
                "SUD-OUEST",
                "OUEST"
            };
        
        
            /**
             * Constructeur de la classe Screen
             * 
             * @param size_ la taille voulue par l'utilisateur
             */
            Screen(int size_) {
                size = size_;
                image = new Case[size * 2][size];
            }
        
            /**
             * Renvoie l'image de l'objet screen en question
             * 
             * @return l'image
             */
            public Case[][] getImage() {
                return image;
            }
        
            /**
             * Verifie si la valeur entrΓ©e par l'utilisateur est valable
             * 
             * @param letter la partie 'lettre' de l'entrΓ©e
             * @param chiffre la partie 'chiffre/nombre' de l'entrΓ©e
             * @return true si la valeur est valable
             */
            public boolean checkUserInput(char letter, int chiffre) {
                String play = letter + String.valueOf(chiffre);
                int value = new String(alphabet).indexOf(letter);
        
                if (value != -1 && 0 < chiffre && chiffre <= size) {
                    ArrayList<String> possiblesMovesString;
                    possiblesMovesString = getStringListFromCaseList(getAllPossiblePlays(false));
        
                    if (possiblesMovesString.contains(play)) {
                        // System.out.println("Possible");
                        return true;
                    } else {
                        System.out.println("Le coup " + play + " n'est pas jouable");
                        return false;
                    }
                }
                System.out.println("Le coup " + play + " n'est pas valable");
                return false;
            }
        
        
            public boolean checkIfCasePossible(char letter, int chiffre) {
                String play = letter + String.valueOf(chiffre);
                int value = new String(alphabet).indexOf(letter);
        
                if (value != -1 && 0 < chiffre && chiffre <= size) {
                    ArrayList<String> possiblesMovesString;
                    possiblesMovesString = getStringListFromCaseList(getAllPossiblePlays(false));
        
                    if (possiblesMovesString.contains(play)) {
                        // System.out.println("Possible");
                        return true;
                    } else {
                        possiblesMovesString = getStringListFromCaseList(getAllPlayedCase());
                        return possiblesMovesString.contains(play);
                    }
                }
                return false;
            }
        
            /**
             * Converti une list de Case en list de Strings
             *
             * @param possibleMoves liste de case des coups possibles
             * @return possiblesMovesString liste de Strings des coups possibles
             */
            public ArrayList<String> caseListToStringList(ArrayList<Case> possibleMoves) {
                ArrayList<String> possiblesMovesString = new ArrayList<>();
                for (Case case1 : possibleMoves) {
                    possiblesMovesString.add(getStringFromCase(case1));
                }
                return possiblesMovesString;
            }
        
            /**
             * donne la position d'une lettre dans l'alphabet
             * @param letter    la lettre a chercher dans l'alphabet
             * @return la position d'une lettre dans l'alphabet - 1
             */
            public int getPositionOfLetter(char letter){
                return(new String(alphabet).indexOf(letter));
            }
        
            /**
             * Place un pion sur le plateau avec sa nature
             * 
             * @param letter la coordonnΓ©es 'lettre' du pion
             * @param chiffre la coordonΓ©es 'chiffre/nombre' du pion
             * @param nature sa nature
             */
            public void setPoint(char letter, int chiffre, char nature) {
                int x = getPositionOfLetter(letter);
                if (x == 0) {
                    x++;
                } else if (x == 1) {
                    x = x + 2;
                } else {
                    x = x * 2 + 1;
                }
                image[x][chiffre - 1].setNature(nature);
            }
        
            /**
             * Supprime tout les pions sur le terrain
             */
            public void clear() {
                for (int r = 0; r < size; r++) {
                    for (int c = 0; c < size * 2; c++) {
                        image[c][r] = new Case(' ');
                    }
                }
            }
        
            /**
             * Affiche le terrain avec les pions jouΓ©s
             *
             * @param command permet d'ajouter des options lors de l'affichage
             */
            public void display(int command) {
                int i = 0;
        
                ArrayList<String> possiblesMovesString;
                possiblesMovesString = getStringListFromCaseList(getAllPossiblePlays(false));
        
                ArrayList<String> texte = new ArrayList<>();
                texte.add("/aide        : affiche l'aide");
                texte.add("/joues       : affiche les coups jouΓ©s par joueur");
                texte.add("/plateau     : affiche le plateau");
                texte.add("/redemarrer  : redemarre la partie");
                texte.add("/quit        : stop la partie");
        
                for (String string : possiblesMovesString) {
                    setPoint(c.getCharFromString(string), c.getIntFromString(string), '-');
                }
                
                displayLetters();
                displayBar();
        
                for (int r = 0; r < size; r++) {
                    String lineNum = Integer.toString(r + 1);
                    if (r < 9) {
                        lineNum = (" " + (r + 1));
                    }
                    System.out.print(lineNum + "|");
                    for (int c = 0; c < size * 2; c++) {
                        System.out.print(image[c][r].nature);
                    }
        
                    if (command == 1) {
                        if (i != 4) {
                            System.out.println(" |      " + texte.get(r));
                            i++;
                        } else {
                            System.out.println(" |");
                        }
                    } else {
                        System.out.println(" |");
                    }
                }
        
                for (String string : possiblesMovesString) {
                    setPoint(c.getCharFromString(string), c.getIntFromString(string), ' ');
                }
                displayBar();
            }
        
            /**
             * Dessine la barre supΓ©rieure et infΓ©rieur (ex: +-------------------+)
             */
            private void displayBar() {
                System.out.print("  +");
                for (int c = 0; c < size * 2; c++) {
                    System.out.print("-");
                }
                System.out.println("-+");
            }
        
            /**
             * Dessine les lettres des colonnes
             */
            private void displayLetters() {
                System.out.print("   ");
                for (int i = 0; i < size; i++) {
                    System.out.print(" " + alphabet[i]);
                }
                System.out.println();
            }
        
            /**
             * Retourne un String de position (ex: A5) en partant de coordonΓ©es dans le tableau de case
             * 
             * @param x la coordonΓ©e en x
             * @param y la coordonΓ©e en y
             * @return la position de la Case
             */
            static public String getStringFromInt(int x, int y) {
                return alphabet[x / 2] + String.valueOf(y + 1);
            }
        
            /**
             * Renvoie la case correspondant Γ  la position (ex: A5) donnΓ©e
             *
             * @param string_ la position donnΓ©e
             * @return la Case correspondante
             */
            public static Case getCaseFromString(String string_) {
                char letter = string_.charAt(0);
                int indexOfLetter = (new String(alphabet).indexOf(letter)) *2 +1;
                int number = Integer.parseInt(String.valueOf(string_.charAt(1)))-1;
                //System.out.println("index of letter '" + letter + "'  = "+indexOfLetter+"    NUMBER ="+number+"    CASE DANS METHODE == "+image[indexOfLetter][number].getNature());
                try {
                    return image[indexOfLetter][number];
                } catch (Exception e){
                    //System.out.println("erreur : getCaseFromString : "+e);
                }
                return image[indexOfLetter][number-1];
            }
        
            /**
             * Renvoie la position (ex: A5) correspondant Γ  une Case donnΓ©e
             *
             * @param case_ la Case donnΓ©e
             * @return la position de la Case correspondante
             */
            public static String getStringFromCase(Case case_) {
                String letter = "";
                String nb = "";
                for (int i = 0; i < image.length; i++) {
                    for (int j = 0; j < image[i].length; j++) {
                        if (image[i][j] == case_) {
                            letter = Character.toString(alphabet[i / 2]);
                            nb = String.valueOf(j + 1);
                        }
                    }
                }
                return letter.concat(nb);
            }
        
            /**
             * Renvoie les positions (ex: A5) correspondantes Γ  plusieurs Cases donnΓ©es
             * 
             * @param caseList les Cases donnΓ©es
             * @return les positions des Cases correspondantes
             */
            public ArrayList<String> getStringListFromCaseList(ArrayList<Case> caseList) {
                ArrayList<String> possiblesMovesString = new ArrayList<>();
                for (Case currentCase : caseList) {
                    possiblesMovesString.add(getStringFromCase(currentCase));
                }
                return possiblesMovesString;
            }
        
            /**
             * Retourne le nombre de coups jouΓ©s jusqu'ici dans la partie
             *
             * @return le nombre de coups jouΓ©s
             */
            public int getNbCoupsJoues() {
                int nb = 0;
                for (Case[] cases : image) {
                    for (Case aCase : cases) {
                        if (aCase.getNature() != ' ') {
                            nb++;
                        }
                    }
                }
                if (nb == size*size){
                    System.out.println("Tout les coups possibles ont Γ©tait jouΓ©s, la partie est terminΓ©e !");
                    restart();
                    return 0;
                }
                return nb;
            }
        
            /**
             * Retourne une liste des coups jouable actuellement dans la partie
             * 
             * @param afficher option permettant d'afficher ou pas la liste sous forme textuelle des coups jouables
             * @return la liste de Cases jouables
             */
            public ArrayList<Case> getAllPossiblePlays(boolean afficher) {
                ArrayList<Case> possibleMoves = new ArrayList<>();
                ArrayList<Case> adjacentCases = new ArrayList<>();
                int nbCoupsJoues = getNbCoupsJoues();
        
                possibleMoves.clear();
        
                // If there's at least one move already played
                if (nbCoupsJoues >= 1) {
        
                    // Check every cases
                    for (int i = 0; i < image.length; i++) {
                        for (int j = 0; j < image[i].length; j++) {
        
                            // If it finds a non empty case
                            if (image[i][j].getNature() != ' ') {
                                nbCoupsJoues++;
                                adjacentCases.clear();
        
                                // Check all around the case to see if there's another case
                                for (int a = -2; a <= 2; a = a + 2) {
                                    for (int b = -1; b <= 1; b++) {
                                        // If a case exists, add it
                                        try {
                                            if (image[i + a][j + b] != null && image[i + a][j + b] != image[i][j] && image[i + a][j + b].nature == ' ') {
                                                adjacentCases.add(image[i + a][j + b]);
                                            }
                                        } catch (Exception e) {
                                            // System.out.println("Erreur: " + e);
                                        }
                                    }
                                }
                                // Then, for each non empty case, add the adjacent cases to the list of possible
                                // moves
                                possibleMoves.addAll(adjacentCases);
                            }
                        }
                    }
        
                // Else (if there are no move already played)
                } else {
                    // Add all cases
                    for (int i = 0; i < image.length; i = i + 2) {
                        for (int j = 0; j < image[i].length; j++) {
                            possibleMoves.add(image[i][j]);
                        }
                    }
                }
                if (possibleMoves.size() == image.length * image.length) {
                    System.out.println("Play anywhere");
        
                } else if (afficher) {
                    System.out.println("You can play at : ");
                    for (Case c : possibleMoves) {
                        System.out.println(getStringFromCase(c));
                    }
                }
                return possibleMoves;
            }
        
            /**
             * Permet de se dΓ©placer dans le tableau en suivant une direction
             *
             * @param current la Case de dΓ©part
             * @param dir_ la direction Γ  suivre
             * @return la position de la Case d'arrivΓ©e
             */
            public String moveWithDir(Case current, String dir_) {
        
                int coX = 0;
                int coY = 0;
        
                for (int i = 1; i < image.length; i = i + 2) {
                    for (int j = 0; j < image[i].length; j++) {
                        if (image[i][j] == current) {
                            coX = i;
                            coY = j;
                        }
                    }
                }
        
                switch (dir_) {
                    case "NORD-OUEST":
                        coX=coX-2;
                        coY--;
                        break;
                    case "NORD-EST":
                        coX=coX+2;
                        coY--;
                        break;
                    case "SUD-OUEST":
                        coX=coX-2;
                        coY++;
                        break;
                    case "SUD-EST":
                        coX=coX+2;
                        coY++;
                        break;
                    case "NORD":
                        coY--;
                        break;
                    case "SUD":
                        coY++;
                        break;
                    case "OUEST":
                        coX=coX-2;
                        break;
                    case "EST":
                        coX=coX+2;
                        break;
                }
                if (coY >= 0 && coY <= image.length && coX > 0 && coX < image.length) {
                    return getStringFromInt(coX, coY);
                } else {
                    return "er";
                }
            }
        
            /**
             * Renvoie toutes les cases oΓΉ un coup a Γ©tΓ© jouΓ©
             *
             * @return une liste de toutes les cases jouΓ©es
             */
            public ArrayList<Case> getAllPlayedCase() {
                ArrayList<Case> allPlayed = new ArrayList<>();
        
                for (int i = 1; i < image.length; i = i + 2) {
                    for (int j = 0; j < image[i].length; j++) {
                        if (image[i][j].getNature() != ' ') {
                            allPlayed.add(image[i][j]);
                        }
                    }
                }
                return allPlayed;
            }
        
            /**
             * VΓ©rifie si en partant d'une case et en suivant une direction, on obtient une condition de victoire
             *
             * @param current la case actuelle
             * @param dir la direction de vΓ©rification
             * @param nb le nombre de cases similaires dΓ©jΓ  rencontrΓ©es
             */
            public void checkIfWinFromCase(Case current, String dir, int nb) {
                char symbole = current.nature;
                String afterMoving = moveWithDir(current, dir);
                if (!afterMoving.equals("er")) { //si il n'y a pas d'erreur on continue dans le if
        
                    if (getCaseFromString(afterMoving) != null) {
                        Case newCase = getCaseFromString(afterMoving);
        
                        if (newCase.nature == symbole && checkIfCasePossible(c.getCharFromString(afterMoving),c.getIntFromString(afterMoving))) {
                            nb++;
                            if (nb == 5 && newCase.nature == symbole) {
                                win = true;
                            } else {
                                checkIfWinFromCase(newCase, dir, nb);
                            }
                        }
                    }
                }
            }
        
            /**
             * VΓ©rifie si le plateau actuel prΓ©sente une victoire pour un joueur
             */
            public void checkIfWin() {
        
                ArrayList<Case> allPlayed = getAllPlayedCase();
        
                allPlayed.forEach(current -> {
                    for (String dir_ : direction) {
                        checkIfWinFromCase(current, dir_, 1);
                        if (win) {
                            System.out.println("Bravo "+m.getJoueurFromChar(current.nature)+" vous avez gagnΓ©(e) !! \n");
                            m.afficherToutLesCoupsJoues();
                            restart();
                            win=false;
                        }
                    }
                });
            }
        
            /**
             * Permets de redΓ©marrer (ou non) une partie
             */
            public void restart(){
                System.out.println("\nVoulez-vous rejouer ? O/N");
                String commande = in.nextLine().trim();
                if (commande.equals("O") || commande.equals("o") || commande.equals("oui") || commande.equals("Oui")){
                    clear();
                    m.clearCoupJoues();
                    System.out.println("\nAller c'est reparti !\n");
                } else {
                    System.out.println("Merci d'avoir jouΓ© au gomoku fait par RomΓ©o Tesei et Fil Veith,\nBonne JournΓ©e et Γ  bientΓ΄t,");
                    System.exit(0);
                }
            }
        }
        
        UI.java Unicode text, UTF-8 text
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        package jeu;
        
        import java.io.PrintStream;
        import java.util.List;
        import java.util.Scanner;
        
        public class UI {
        
            static private Scanner in = new Scanner(System.in);
            static private PrintStream out = System.out;
        
            /**
             * Choix de la taille du plateau
             * 
             * @return la taille du plateau
             */
            public int taillePlateau() {
                int taillePlateauInt = 10;
                out.println("Quel taille de plateau voulez-vous ? (entre 5 et 26)");    //si aucune valeur de l'utilisateur alors taille = 10
                while (true) {
                    String taillePlateau = in.nextLine().trim();
                    try {
                        taillePlateauInt = Integer.parseInt(taillePlateau);
                    } catch (Exception e) {
                        out.println("erreur: la valeur entrΓ©e n'est pas valable ");
                    }
        
                    if (taillePlateauInt <= 26 && taillePlateauInt >= 5) {
                        return taillePlateauInt;
                    }
                    out.println("erreur: la valeur entrΓ©e n'est pas valable ");
                }
            }
        
            /**
             * Choix du nom du joueur
             * 
             * @param nbJoueur le numΓ©ro du joueur (1 ou 2)
             * @return le nom de joueur
             */
            public String choixNomJoueur(int nbJoueur) {
                out.println("Nom du joueur " + nbJoueur + " : ");
                String nomJoueur = in.nextLine().trim();
                if (nomJoueur.equals(""))
                    nomJoueur = "Joueur" + nbJoueur;
                return nomJoueur;
            }
        
            /**
             * Methode permettant d'afficher le necessaire au(x) joueur(s)
             *
             * @param nomJoueur le nom du joueur actuel
             * @param coupJoues la liste des coups jouΓ©s par le joueur actuel
             * @param screen_ le screen actuel
             * @return l'interaction avec le joueur
             */
            public String userInterface(String nomJoueur, List<String> coupJoues, Screen screen_) {
                Main m = new Main();
                boolean boucler = true;
                while (boucler) {
                    out.println("OΓΉ voulez vous jouer " + nomJoueur + " ? ");
                    String commande = in.nextLine().trim();
                    out.println("\n\n");
                    switch (commande) {
                    case "/quit":
                        out.println("-> Bye.");
                        boucler = false;
                        System.exit(0);
                    case "/aide":
                        screen_.display(1);
                        break;
                    case "/plateau":
                        screen_.display(0);
                        break;
                    case "/coup":
                        screen_.getAllPossiblePlays(true);
                        break;
                    case "/redemarrer":
                        screen_.clear();
                        m.clearCoupJoues();
                        screen_.display(0);
                        break;
                    case "/joues":
                        for (String cJ : coupJoues) {
                            out.println("" + cJ);
                        }
                        out.println();
                        break;
                    default:
                        if (commande.length() == 2 || commande.length() == 3) {
                            return commande;
                        }
                        out.println("-> commande inconnue '" + commande + "'");
                        break;
                    }
                }
                return "";
            }
        }
        
        makefile Unicode text, UTF-8 text
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        L := $(wildcard ../*/*.lua)
        P := $(wildcard ../*/*.py)
        run:
        ifdef L
        	@lua $L
        else ifdef P
        	@python3 $P
        else
        	@echo Merde, il n\'y a pas d\'entrΓ©e lua ou python
        endif
        

        entry #12

        written by moshikoi
        submitted at
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        main.cpp ASCII text
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        #include <cstddef>
        #include <iostream>
        #include <limits>
        #include <memory>
        #include <stdexcept>
        #include <string>
        #include <type_traits>
        #include <utility>
        
        enum class Color {
        	None = 0,
        	White = 1,
        	Black = 2,
        };
        
        Color
        opposite(Color color) {
        	return color == Color::White ? Color::Black : Color::White;
        }
        
        class Board {
        	static constexpr auto transposition_table_size = 2 << 10;
        	static constexpr auto win_score = 10000;
        
        	Color currentColor;
        	int height[7];
        	Color grid[7][6];
        
        	struct Transposition {
        		bool valid;
        		int score;
        		std::size_t hash;
        	};
        
        	std::unique_ptr<Transposition[]> transposition_table;
        
          public:
        	Board() : height{}, grid{{Color::None}}, currentColor{Color::White} { transposition_table = std::make_unique<Transposition[]>(transposition_table_size); }
        
        	int get_best_move() {
        		int bestColumn = 0;
        		int bestScore = -win_score;
        
        		for (int column = 0; column < 7; ++column) {
        			if (height[column] == 6) {
        				continue;
        			}
        			drop(column);
        			int score = is_win(opposite(currentColor), column, height[column] - 1) ? win_score : -negamax(6, -win_score, win_score);
        			undrop(column);
        
        			if (score > bestScore) {
        				bestColumn = column;
        				bestScore = score;
        			}
        		}
        
        		return bestColumn;
        	}
        
        	void drop(int column) {
        		auto &columnHeight = height[column];
        		if (columnHeight >= 6) {
        			throw std::runtime_error{"Attempted to drop a tile on a full column"};
        		}
        		grid[column][columnHeight] = currentColor;
        		currentColor = opposite(currentColor);
        		++columnHeight;
        	}
        	void undrop(int column) {
        		auto &columnHeight = height[column];
        		--columnHeight;
        		grid[column][columnHeight] = Color::None;
        		currentColor = opposite(currentColor);
        	}
        
        	int negamax(int depth, int alpha, int beta) {
        		auto const hash = state_hash();
        		auto &entry = transposition_table[hash % transposition_table_size];
        		if (entry.valid && entry.hash == hash) {
        			return entry.score;
        		}
        		if (depth < 0) {
        			return eval();
        		}
        
        		for (int column = 0; column < 7; ++column) {
        			if (height[column] == 6) {
        				continue;
        			}
        			drop(column);
        			int score = is_win(opposite(currentColor), column, height[column] - 1) ? win_score : -negamax(depth - 1, -beta, -alpha);
        			undrop(column);
        			if (score > beta) {
        				return beta;
        			}
        			if (score > alpha) {
        				alpha = score;
        			}
        		}
        
        		entry.valid = true;
        		entry.hash = hash;
        		entry.score = alpha;
        
        		return alpha;
        	}
        
        	int eval() { return advantage(currentColor) - advantage(opposite(currentColor)); }
        
        	int advantage(Color color) {
        		int total = 0;
        		for (int column = 0; column < 7; ++column) {
        			int count = 0;
        			for (int row = height[column] - 1; row >= 0 && grid[column][row] == color; --row) {
        				++count;
        			}
        
        			total += count;
        		}
        
        		return total;
        	}
        
        	bool is_win(Color color, int column, int row) {
        		std::pair<int, int> deltas[] = {
        		    {0, 1}, {0, -1}, {1, 0}, {-1, 0}, {1, 1}, {1, -1}, {-1, 1}, {-1, -1},
        		};
        
        		for (auto const &[deltaX, deltaY] : deltas) {
        			for (int offset = 0; offset < 4; ++offset) {
        				auto const offsetColumn = column + deltaY * offset;
        				auto const offsetRow = row + deltaX * offset;
        				if (offsetColumn < 0 || offsetColumn >= 7 || offsetRow < 0 || offsetRow >= 6 || grid[offsetColumn][offsetRow] != color) {
        					goto next;
        				}
        			}
        			return true;
        		next:
        			continue;
        		}
        
        		return false;
        	}
        
        	std::size_t state_hash() {
        		std::size_t hash = 0;
        		for (int column = 0; column < 7; ++column) {
        			for (int row = 5; row >= 0; --row) {
        				hash = hash * 3 + static_cast<std::underlying_type_t<Color>>(grid[column][row]);
        			}
        		}
        		return hash;
        	}
        };
        
        int
        main(int argc, char const **argv) {
        	char turn;
        	std::cin >> turn;
        
        	Board board{};
        
        	try {
        		switch (turn) {
        			while (true) {
        			case 'f': {
        				int move = board.get_best_move();
        				std::cout << move << std::endl;
        				board.drop(move);
        				[[fallthrough]];
        			}
        			case 's': {
        				int move;
        				std::cin >> move;
        				board.drop(move);
        			}
        			}
        		}
        	} catch (std::exception const ex) { std::cerr << ex.what() << std::endl; }
        }
        

        entry #13

        written by razetime
        submitted at
        1 like

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        connectfork.swf Unicode text, UTF-8 text, with CRLF line terminators
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        // right into the wall socket πŸ₯Ί
        
        extension String: Error {}
        let verbose: Bool = CommandLine.arguments.last == "-v"
        
        func display(board: [[Int]]) {
          for (index, row) in board.enumerated() {
            for col in row {
              print("β”‚",terminator:"")
              if col == 0 {
                print(" ",terminator:"")
              } else if col == 1 {
                print("β‘ ",terminator:"")
              } else {
                print("❢",terminator:"")
              }
            }
            print("β”‚")
            if index == 5 {
              print("β””β”€β”΄β”€β”΄β”€β”΄β”€β”΄β”€β”΄β”€β”΄β”€β”˜")
            } else {
              print("β”œβ”€β”Όβ”€β”Όβ”€β”Όβ”€β”Όβ”€β”Όβ”€β”Όβ”€β”€")
            }
          }
        }
        
        func move(board: inout [[Int]], depth: inout [Int], player: Int, col: Int) {
          board[depth[col]][col] = player
          depth[col] -= 1
        }
        
        func win(board: [[Int]], depth: [Int], player: Int, col: Int) -> Bool {
          for (moveRow, moveCol) in [(0,1),(1,0),(-1,0),(0,-1),(1,1),(1,-1),(-1,-1),(-1,1)]{
            if (0..<4).allSatisfy({board[depth[col] + $0 * moveRow][col + $0 * moveCol] == player}) {
              return true
            }
          }
          return false
        }
        
        
        var board: [[Int]] = [[Int]](repeating: [Int](repeating: 0, count: 7), count: 6)
        var depth: [Int] = [Int](repeating: 5, count: 7)
        var lPlayer: Int = 2
        var lMove: Int = 0
        if "f" == readLine() {
          let cMove: Int = (0..<7).filter({depth[$0] > 0}).randomElement()!
          print(cMove+1)
          move(board: &board, depth: &depth, player: 2, col: cMove)
          lPlayer = 2
          lMove = cMove
        }
        while !win(board: board, depth: depth, player: lPlayer, col: lMove) {
          switch lPlayer {
            case 2:
              if verbose {
                print("Enter move: ", terminator: "")
              }
              if let StrMove = readLine() {
                if let tMove = Int(StrMove) {
                  lMove = tMove-1
                }
              } else {
                if verbose {
                  print("invalid move! :3")
                }
                continue
              }
              if depth[lMove] == 0 {
                if verbose {
                  print("Column \(lMove) is full.")
                }
                continue
              }
              move(board: &board, depth: &depth, player: 1, col: lMove)
              lPlayer = 1
            case 1:
              if verbose {
                print("Computer move: ", terminator: "")
              }
              let cMove: Int = (0..<7).filter({depth[$0] > 0}).randomElement()!
              print(cMove+1)
              if verbose {
                display(board: board)
              }
              move(board: &board, depth: &depth, player: 2, col: cMove)
              lPlayer = 2
              lMove = cMove
            default:
              print("zoinks!")
              throw "oopsies!"
          }
        }
        switch lPlayer {
          case 1:
            print("You Win!")
          case 2:
            print("Computer Wins!")
          default:
            print("]Β₯ÍHβ€ΊΓ˜Γ‘Γ΄PS Wins!")
        }
        

        entry #14

        written by soup girl
        submitted at
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        4.py ASCII text, with CRLF line terminators
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        import random
        if input() == 's': input()
        while True:
            # the right column is cursed, we do not go there
            print(random.randint(1,6))
            input()
        

        entry #15

        written by jetison333
        submitted at
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        connectFour.py ASCII text, with CRLF line terminators
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        def stripList(lst):
            return [x for x in lst if not x is None]
        
        def endState():
            for x, col in enumerate(board):
                for y, space in enumerate(col):
                    if space != 0:
                        if (x + 3 < len(board) and space == board[x+1][y] == board[x+2][y] == board[x+3][y]):
                            return space
                        if (y + 3 < len(board[0]) and space == board[x][y+1] == board[x][y+2] == board[x][y+3]):
                            return space
                        if (x + 3 < len(board) and y + 3 < len(board[0]) and space == board[x+1][y+1] == board[x+2][y+2] == board[x+3][y+3]):
                            return space
                        if (x + 3 < len(board) and y - 3 >= 0 and space == board[x+1][y-1] == board[x+2][y-2] == board[x+3][y-3]):
                            return space
            return 0
        
        def updateBoard(move, player):
            moveStack.append(move)
            if player == max:
                board[move][board[move].index(0)] = 1
            else:
                board[move][board[move].index(0)] = -1
        
        def undo():
            move = moveStack.pop()
            if 0 in board[move]:
                board[move][board[move].index(0) - 1] = 0
            else:
                board[move][-1] = 0
        
        def check(arr):
            return 0 in arr and ((1 in arr) ^ (-1 in arr))
        
        def evaluate4(arr):
            if 1 in arr:
                return 10 ** (arr.count(1) - 1)
            return -(10 ** (arr.count(-1) - 1))
        
        def evaluateBoard():
            if (winner := endState()) != 0:
                return winner * 100000
            total = 0
            for x, col in enumerate(board):
                for y, space in enumerate(col):
                    if (x + 3 < len(board)):
                        right = [space, board[x+1][y], board[x+2][y], board[x+3][y]]
                        if check(right):
                            total += evaluate4(right)
                    if (y + 3 < len(board[0])):
                        up = [space, board[x][y+1], board[x][y+2], board[x][y+3]]
                        if check(up):
                            total += evaluate4(up)
                    if (x + 3 < len(board) and y + 3 < len(board[0])):
                        upright = [space, board[x+1][y+1], board[x+2][y+2], board[x+3][y+3]]
                        if check(upright):
                            total += evaluate4(upright)
                    if (x + 3 < len(board) and y - 3 >= 0):
                        downright = [space, board[x+1][y-1], board[x+2][y-2], board[x+3][y-3]]
                        if check(downright):
                            total += evaluate4(downright)
            return total
                
        def evaluateMove(move, player, depth = 0):
            global board
            if not 0 in board[move]:
                return None
            updateBoard(move, min if player == max else max)
            if (winner := endState()) != 0:
                returnVal = winner * 100000
            elif depth > 4: #tune this if it takes to long/short
                returnVal = evaluateBoard()
            else:
                moves = [evaluateMove(x, min if player == max else max, depth+1) for x in range(7)]
                if all(move is None for move in moves):
                    returnVal = None
                else:
                    returnVal = player(stripList(moves))
            undo()
            return returnVal
        
        def move(player):
            moves = [evaluateMove(x, min if player == max else max) for x in range(7)]
            choosenMove = moves.index(player(stripList(moves)))
            updateBoard(choosenMove, player)
            return choosenMove
        
        board = [[0 for _ in range(6)] for _ in range(7)]
        moveStack = []
        
        side = input()
        player = max
        if side == "f":
            player = min
            print(move(player) + 1)
        while endState() == 0:
            updateBoard(int(input()) - 1, min if player == max else max)
            print(move(player) + 1)