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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
    Tower of Hanoi retrohun 69
    Alphabetic Numbers CaedenHarper 3,901
    Factorial Factorisation NameRandomString 168
    Catalan Numbers NameRandomString 917
    Alphabetic Numbers saito-ta 💎 136
    Alphabetic Numbers oaiqjuy 🥈 549
    Kolakoski Sequence NameRandomString 91
    Prime Numbers madex 83
    Leap Years Steffan153 🥇 36
    Intersection retrohun 130
    Morse Encoder NameRandomString 629
    Transpose Sentence NameRandomString 98
    Mandelbrot NameRandomString 🥉 458
    Pangram Grep prestosilver 94
    Ulam Sequence HumanoidCPU 1,099
    Alphabetic Numbers LostSyntax21 🥉 1,000
    Alphabetic Numbers KatieLG 3,901
    Alphabetic Numbers dokutan 3,026
    Pernicious Numbers NameRandomString 76
    Pernicious Numbers (Long) NameRandomString 82
    Pernicious Numbers sisyphus-ppcg 34
    Alphabetic Numbers NameRandomString 3,901
    Ulam Sequence Shanethegamer 1,099
    Day of Week LostSyntax21 105
    Seven Segment NameRandomString 225
    Christmas Trees NameRandomString 106
    Sierpiński Triangle NameRandomString 374
    Fibonacci NameRandomString 48
    Hilbert Curve NameRandomString 1,278
    Fibonacci roupiq 42
    Diamonds NameRandomString 193
    Leap Years Lydxn 🥇 36
    Fibonacci imACanOfDrPepper 78
    Niven Numbers (Long) Steffan153 46
    Niven Numbers albanian-laundromat 71
    Star Wars GPT NameRandomString 🥉 334
    Smith Numbers NameRandomString 337
    N Queens NameRandomString 1,252
    brainfuck NameRandomString 485
    Medal Tally NameRandomString 203
    Intersection NameRandomString 🥉 117
    Time Distance NameRandomString 346
    24 Game NameRandomString 5,676
    Quine NameRandomString 🥇 19
    99 Bottles of Beer madeforlosers 11,892
    24 Game madeforlosers 12,439
    ROT13 retrohun 💎 105
    Rijndael S-box retrohun 489
    Taxicab Numbers dokutan 3,322
    Pangram Grep NameRandomString 81
    Quine prestosilver 21
    Foo Fizz Buzz Bar ComradeSquirrel 108
    Fizz Buzz ComradeSquirrel 75
    Taxicab Numbers CaedenHarper 4,166
    Dragon Curve dokutan 7,648
    Taxicab Numbers retrohun 🥇 78
    Leap Years ComradeSquirrel 58
    Fibonacci ComradeSquirrel 48
    Collatz NameRandomString 85
    Leap Years sisyphus-ppcg 43
    Billiards NameRandomString 🥉 314
    N Queens edsrzf 🥈 115
    Taxicab Numbers DialFrost 🥉 96
    ISBN NameRandomString 114
    Fizz Buzz NameRandomString 70
    Fizz Buzz mrxz 116
    Tower of Hanoi bitsandbeyond 65
    Happy Numbers NameRandomString 108
    Leap Years NameRandomString 62
    Kolakoski Sequence madeforlosers 2,004
    Rule 110 NameRandomString 219
    Leap Years aksyristos 44
    Fibonacci aksyristos 34
    Prime Numbers aksyristos 54
    Divisors aksyristos 55
    Niven Numbers aksyristos 45
    Fizz Buzz aksyristos 63
    Calendar NameRandomString 🥈 264
    Roman to Arabic NameRandomString 319
    Dragon Curve HumanoidCPU 10,279
    Pernicious Numbers (Long) Steffan153 🥇 52
    Dragon Curve Shanethegamer 10,279
    Leyland Numbers NameRandomString 892
    Evil Numbers madeforlosers 77
    Multitap Input NameRandomString 🥉 204
    Pascal’s Triangle Steffan153 46
    Trinomial Triangle Steffan153 💎 56
    Cubes madeforlosers 4,108
    Odious Numbers madeforlosers 80
    Kaprekar Numbers rucin93 🥉 209
    Evil Numbers (Long) madeforlosers 1,957
    Farey Sequence madeforlosers 4,361
    Odious Numbers (Long) madeforlosers 1,952
    Abundant Numbers madeforlosers 170
    Abundant Numbers (Long) madeforlosers 971
    Prime Numbers madeforlosers 78
    Look and Say madeforlosers 1,286
    Prime Numbers (Long) madeforlosers 5,955
    Divisors madeforlosers 1,173
    Foo Fizz Buzz Bar madeforlosers 5,726