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    The Connect Four hole will go live in approximately . Why not try and solve it ahead of time?

    Recent Solutions

    Hole Golfer Bytes Time Submitted
    Sudoku (Fill-in) codereport 🥈 82
    Sudoku codereport 🥉 232
    ROT13 scpchicken 23
    Mahjong codereport 🥉 114
    Arabic to Roman Steffan153 🥈 49
    Lucky Tickets Steffan153 🥇 26
    Intersection scpchicken 33
    Polyominoes codereport 🥈 68
    SI Units codereport 403
    Time Distance codereport 🥉 159
    Reversi codereport 🥉 69
    Number Spiral Steffan153 32
    Leap Years scpchicken 26
    Zeckendorf Representation scpchicken 61
    PalindromemordnilaP scpchicken 32
    ROT13 Steffan153 24
    Emojify Steffan153 🥈 81
    Tower of Hanoi scpchicken 🥇 33
    Tower of Hanoi Steffan153 🥇 33
    Scrambled Sort Steffan153 25
    Pangram Grep Steffan153 22
    Maze oaiqjuy 52
    Alphabetic Numbers CaedenHarper 3,947
    Reversi oaiqjuy 78
    Smith Numbers codereport 64
    QR Decoder codereport 78
    Poker codereport 🥈 188
    Partition Numbers codereport 36
    Number Spiral codereport 42
    Diamonds codereport 39
    Calendar codereport 147
    Billiards codereport 61
    24 Game codereport 🥈 111
    Topological Sort oaiqjuy 42
    Gray Code Encoder oaiqjuy 🥇 17
    Topological Sort codereport 42
    Ten-pin Bowling codereport 🥉 94
    Taxicab Numbers codereport 🥇 31
    Spelling Numbers codereport 🥈 232
    Roman to Arabic codereport 44
    Reverse Polish Notation codereport 49
    Repeating Decimals codereport 🥉 96
    Pascal’s Triangle codereport 🥇 15
    Kolakoski Constant codereport 48
    Hexdump codereport 94
    Fractions codereport 37
    12 Days of Christmas codereport 🥉 395
    Minesweeper oaiqjuy 53
    Alphabetic Numbers oaiqjuy 99
    PalindromemordnilaP oaiqjuy 33
    Happy Numbers oaiqjuy 39
    Set vang1ong7ang 48
    Tower of Hanoi vang1ong7ang 🥇 33
    ISBN oaiqjuy 38
    Abundant Numbers vang1ong7ang 🥇 24
    Seven Segment vang1ong7ang 58
    Sierpiński Triangle vang1ong7ang 38
    Medal Tally vang1ong7ang 🥉 72
    Topological Sort vang1ong7ang 42
    Star Wars GPT vang1ong7ang 39
    Leap Years vang1ong7ang 26
    Jacobi Symbol vang1ong7ang 62
    π vang1ong7ang 98
    Pernicious Numbers vang1ong7ang 18
    Proximity Grid vang1ong7ang 76
    Smith Numbers vang1ong7ang 78
    Morse Decoder vang1ong7ang 103
    Repeating Decimals vang1ong7ang 99
    Kolakoski Constant vang1ong7ang 50
    Emojify vang1ong7ang 89
    ISBN vang1ong7ang 33
    Hexdump vang1ong7ang 106
    Mandelbrot vang1ong7ang 78
    Gijswijt’s Sequence vang1ong7ang 46
    λ vang1ong7ang 🥈 205
    Ordinal Numbers vang1ong7ang 41
    Maze vang1ong7ang 53
    24 Game vang1ong7ang 157
    Christmas Trees vang1ong7ang 45
    Sudoku (Fill-in) vang1ong7ang 162
    Billiards vang1ong7ang 62
    Morse Encoder vang1ong7ang 92
    DFA Simulator vang1ong7ang 83
    Minesweeper vang1ong7ang 🥉 49
    Tic-tac-toe vang1ong7ang 🥈 46
    φ vang1ong7ang 🥉 82
    Zodiac Signs vang1ong7ang 78
    Abundant Numbers oaiqjuy 40
    CSS Colors vang1ong7ang 611
    Lucky Tickets vang1ong7ang 30
    Spelling Numbers vang1ong7ang 269
    Rock-paper-scissors-Spock-lizard vang1ong7ang 🥈 150
    Calendar vang1ong7ang 151
    brainfuck vang1ong7ang 121
    Arithmetic Numbers vang1ong7ang 31
    Reversi vang1ong7ang 80
    Multitap Input vang1ong7ang 53
    Mahjong vang1ong7ang 133
    Catalan’s Constant vang1ong7ang 131
    12 Days of Christmas vang1ong7ang 410