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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 Chars Time Submitted
    PalindromemordnilaP Dominoscompute 135
    Calendar edsrzf 🥈 173
    Day of Week edsrzf 🥇 76
    Day of Week Steffan153 🥇 76
    Leap Years denkyuu1 97
    Tutorial zgialor-lab 115
    Fibonacci Dominoscompute 57
    Arabic to Roman prestosilver 50
    Spelling Numbers prestosilver 49
    Arabic to Roman oaiqjuy 🥇 49
    Snake kg583 194
    Spelling Numbers oaiqjuy 🥇 48
    Sudoku (Fill-in) edsrzf 🥉 286
    Alphabetic Numbers Dominoscompute 111
    Tower of Hanoi aksyristos 94
    Alphabetic Numbers aksyristos 95
    Catalan Numbers Dominoscompute 76
    Spelling Numbers antimon2 50
    Alphabetic Numbers scpchicken 92
    Alphabetic Numbers zacjl 🥇 86
    Inventory Sequence edsrzf 💎 56
    Alphabetic Numbers edsrzf 🥇 86
    Tongue-twisters edsrzf 321
    Alphabetic Numbers SirBogman 93
    Alphabetic Numbers blaztoma 🥉 89
    Spelling Numbers Emutis 58
    Ellipse Perimeters Shanethegamer 130
    Pascal’s Triangle Steffan153 🥈 63
    Happy Numbers Steffan153 🥇 75
    Emirp Numbers Steffan153 🥇 76
    Ulam Sequence HumanoidCPU 1,101
    Spelling Numbers rkg-huwdu 🥇 48
    𝑒 Steffan153 52
    Alphabetic Numbers CaedenHarper 93
    Leap Years Steffan153 🥈 60
    Pernicious Numbers Steffan153 52
    Pernicious Numbers (Long) Steffan153 🥇 58
    Van Eck Sequence Steffan153 💎 67
    Inventory Sequence Steffan153 🥈 57
    Alphabetic Numbers Steffan153 🥉 89
    Alphabetic Numbers KatieLG 3,095
    Alphabetic Numbers BREMAUCY 113
    Pangram Grep not-a-pokemon 127
    Look and Say not-a-pokemon 245
    Alphabetic Numbers dokutan 1,055
    Arabic to Roman 2bular 🥇 49
    Spelling Numbers 2bular 🥇 48
    Ulam Sequence Shanethegamer 1,101
    Ulam Sequence kg583 139
    λ edsrzf 220
    λ kg583 💎 176
    Gray Code Decoder Dominoscompute 113
    Gray Code Encoder Dominoscompute 🥇 71
    brainfuck Dominoscompute 453
    Fibonacci Matter1024 52
    Fibonacci roupiq 98
    Taxicab Numbers edsrzf 🥈 116
    Spelling Numbers codereport 🥇 48
    99 Bottles of Beer madeforlosers 11,898
    Taxicab Numbers dokutan 4,168
    Roman to Arabic dokutan 199
    Gray Code Encoder dokutan 86
    Gray Code Decoder dokutan 129
    United States dokutan 983
    ROT13 dokutan 930
    Rock-paper-scissors-Spock-lizard dokutan 690
    Morse Decoder dokutan 728
    Lucky Tickets dokutan 3,445
    CSS Colors dokutan 3,299
    Multitap Input dokutan 🥉 501
    Taxicab Numbers CaedenHarper 4,168
    Quine aksyristos 🥇 26
    Taxicab Numbers kg583 💎 115
    Nim edsrzf 133
    Nim kg583 129
    Continued Fractions edsrzf 🥈 131
    Tower of Hanoi bitsandbeyond 99
    Kolakoski Sequence madeforlosers 2,013
    Reverse Polish Notation kg583 141
    Dragon Curve HumanoidCPU 10,281
    Dragon Curve Shanethegamer 10,281
    Evil Numbers madeforlosers 83
    Cubes madeforlosers 2,840
    Odious Numbers madeforlosers 86
    Evil Numbers (Long) madeforlosers 1,963
    Farey Sequence madeforlosers 4,367
    Odious Numbers (Long) madeforlosers 1,958
    Abundant Numbers madeforlosers 176
    Abundant Numbers (Long) madeforlosers 977
    Prime Numbers madeforlosers 84
    Look and Say madeforlosers 1,292
    Prime Numbers (Long) madeforlosers 5,961
    Divisors madeforlosers 1,179
    Foo Fizz Buzz Bar madeforlosers 5,732
    12 Days of Christmas madeforlosers 2,382
    Tongue-twisters madeforlosers 536
    Niven Numbers (Long) madeforlosers 7,451
    Fizz Buzz madeforlosers 426
    Fibonacci aksyristos 63
    Emirp Numbers (Long) kg583 🥈 123