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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
    Leap Years kasarino 247
    Prime Numbers kasarino 344
    Fizz Buzz kasarino 539
    Fibonacci kasarino 342
    Alphabetic Numbers CaedenHarper 4,168
    Arithmetic Numbers Matter1024 305
    Divisors Matter1024 217
    Collatz Matter1024 261
    Leyland Numbers Matter1024 🥉 269
    Happy Numbers Matter1024 🥇 144
    Fibonacci scpchicken 177
    Happy Numbers roupiq 🥇 144
    Emirp Numbers roupiq 🥇 173
    Pernicious Numbers roupiq 🥇 137
    Prime Numbers roupiq 🥇 108
    Odious Numbers roupiq 🥇 110
    Evil Numbers roupiq 🥇 107
    Fibonacci roupiq 171
    Niven Numbers roupiq 🥇 128
    Abundant Numbers roupiq 200
    Niven Numbers Matter1024 🥇 128
    Pernicious Numbers Matter1024 🥇 137
    Emirp Numbers Matter1024 🥇 173
    Odious Numbers Matter1024 🥇 110
    Evil Numbers Matter1024 🥇 107
    Niven Numbers JFS-AI 🥇 128
    Prime Numbers Matter1024 🥇 108
    Ulam Sequence albanian-laundromat 272
    Ulam Sequence HumanoidCPU 3,124
    Alphabetic Numbers KatieLG 🥇 3,935
    Abundant Numbers (Long) Matter1024 222
    Abundant Numbers Matter1024 200
    Fibonacci Matter1024 148
    Alphabetic Numbers dokutan 🥇 3,935
    Taxicab Numbers Matter1024 💎 309
    Nim albanian-laundromat 441
    Taxicab Numbers scpchicken 🥈 1,716
    Calendar AidanWalter 🦄 2,252
    Niven Numbers Herbert00709 🥇 128
    Happy Numbers Herbert00709 🥇 144
    Emirp Numbers Herbert00709 🥇 173
    Pernicious Numbers Herbert00709 🥇 137
    Prime Numbers Herbert00709 🥇 108
    Odious Numbers Herbert00709 🥇 110
    Evil Numbers Herbert00709 🥇 107
    Fibonacci Herbert00709 171
    Musical Chords albanian-laundromat 🥈 565
    Tower of Hanoi scpchicken 444
    Niven Numbers (Long) Steffan153 203
    Odious Numbers Steffan153 🥇 110
    Niven Numbers Steffan153 🥇 128
    Leap Years Steffan153 166
    Happy Numbers Steffan153 🥇 144
    Pernicious Numbers Steffan153 🥇 137
    Prime Numbers (Long) Steffan153 190
    Fibonacci Steffan153 143
    Evil Numbers Steffan153 🥇 107
    Emirp Numbers Steffan153 🥇 173
    Abundant Numbers Steffan153 200
    Prime Numbers Steffan153 🥇 108
    Rijndael S-box snoozingnewt 🥉 805
    Fibonacci snoozingnewt 171
    Abundant Numbers snoozingnewt 200
    Prime Numbers snoozingnewt 🥇 108
    Odious Numbers snoozingnewt 🥇 110
    Evil Numbers snoozingnewt 🥇 107
    Pernicious Numbers snoozingnewt 🥇 137
    Happy Numbers snoozingnewt 🥇 144
    Emirp Numbers snoozingnewt 🥇 173
    Niven Numbers snoozingnewt 🥇 128
    Taxicab Numbers dokutan 🥉 4,200
    Card Number Validation MeWhenI 324
    Taxicab Numbers CaedenHarper 4,433
    Prime Numbers sisyphus-ppcg 🥇 108
    Niven Numbers sisyphus-ppcg 🥇 128
    Happy Numbers sisyphus-ppcg 🥇 144
    Emirp Numbers sisyphus-ppcg 🥇 173
    Pernicious Numbers sisyphus-ppcg 🥇 137
    Odious Numbers sisyphus-ppcg 🥇 110
    Evil Numbers sisyphus-ppcg 🥇 107
    Fibonacci solisolu 160
    Dragon Curve HumanoidCPU 12,598
    Kolakoski Sequence madeforlosers 2,051
    γ madeforlosers 1,048
    Leap Years ComradeSquirrel 183
    Fibonacci plcc0 171
    Kaprekar Numbers DialFrost 🥈 253
    Quine scpchicken 820
    N Queens MostParsingVex 💎 514
    Niven Numbers madeforlosers 188
    Collatz madeforlosers 268
    Fibonacci Nathan-Masala 189
    Continued Fractions MeWhenI 💎 377
    Continued Fractions albanian-laundromat 🥈 394
    Tutorial Nathan-Masala 333
    ISBN albanian-laundromat 350
    Card Number Validation albanian-laundromat 🥈 291
    Abundant Numbers (Long) msbranicky 373
    Abundant Numbers (Long) albanian-laundromat 237
    Gray Code Encoder albanian-laundromat 🦄 243