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    The Gray Code Decoder and Gray Code Encoder holes will go live in approximately . Why not try and solve them ahead of time?

    Recent Solutions

    Hole Golfer Bytes Time Submitted
    Gray Code Decoder Steffan153 72
    brainfuck aksyristos 224
    Gray Code Decoder solisolu 82
    Gray Code Encoder HumanoidCPU 118
    Continued Fractions albanian-laundromat 140
    24 Game KasperKivimaeki 347
    Gray Code Decoder kasarino 104
    Gray Code Encoder kasarino 157
    Gray Code Encoder KasperKivimaeki 84
    Gray Code Encoder not-a-pokemon 119
    Quine not-a-pokemon 72
    Gray Code Decoder rhdqor213 71
    Gray Code Decoder emgordon154 102
    Gray Code Encoder madex 92
    ROT13 Steffan153 78
    Quine Mukundan314 49
    Gray Code Decoder KasperKivimaeki 72
    Fizz Buzz zgialor-lab 94
    Christmas Trees kasarino 566
    Forsyth–Edwards Notation Yax42 151
    Card Number Validation Yax42 108
    Arabic to Roman Yax42 249
    Gray Code Encoder Yax42 90
    Gray Code Decoder Yax42 75
    Jacobi Symbol prestosilver 260
    Partition Numbers retrohun 663
    Pernicious Numbers prestosilver 89
    Gray Code Decoder madex 82
    Pernicious Numbers (Long) MostParsingVex 73
    Pernicious Numbers MostParsingVex 71
    Happy Numbers kasarino 154
    Kaprekar Numbers KasperKivimaeki 74
    Pernicious Numbers kasarino 150
    Tutorial kasarino 104
    Calendar sean-niemann 🥈 216
    Odd Polyomino Tiling madex 778
    Tower of Hanoi dokutan 72
    Gray Code Encoder CaedenHarper 93
    QR Decoder madex 233
    Mandelbrot zacjl 131
    Factorial Factorisation kitotch 230
    Happy Numbers madex 99
    Collatz madex 74
    Fibonacci Pyroan 54
    Rijndael S-box prestosilver 244
    Quine tsschepens 76
    Scrambled Sort madex 273
    Kaprekar Numbers zacjl 74
    Prime Numbers (Long) madex 61
    Niven Numbers (Long) madex 68
    Happy Numbers solisolu 93
    Fizz Buzz hazzery 85
    Prime Numbers Steffan153 56
    Prime Numbers (Long) Steffan153 57
    Happy Numbers (Long) solisolu 92
    Odious Numbers solisolu 61
    Continued Fractions quesswho 155
    Day of Week prestosilver 239
    Continued Fractions xiaoyiming123 144
    Niven Numbers (Long) Herbert00709 69
    Niven Numbers Herbert00709 🥇 49
    Kolakoski Constant Steffan153 🥉 131
    Mahjong aksyristos 3,502
    Fibonacci madeforlosers 52
    Abundant Numbers Steffan153 66
    Foo Fizz Buzz Bar cjdyer 122
    Foo Fizz Buzz Bar hazzery 122
    Transpose Sentence KasperKivimaeki 🥇 95
    Collatz kasarino 94
    Emirp Numbers RealAMC 187
    Pernicious Numbers Herbert00709 49
    Foo Fizz Buzz Bar solisolu 117
    Evil Numbers (Long) CaedenHarper 56
    Evil Numbers CaedenHarper 54
    Odious Numbers CaedenHarper 55
    Odious Numbers (Long) CaedenHarper 54
    Partition Numbers aksyristos 104
    π hazzery 1,019
    Van Eck Sequence madex 79
    Tower of Hanoi madex 73