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

    Recent Solutions

    Hole Golfer Bytes Time Submitted
    24 Game dokutan 🥉 352
    Prime Numbers CommandLeo 42
    Pernicious Numbers (Long) DialFrost 59
    Pernicious Numbers (Long) DialFrost 🥉 54
    Arithmetic Numbers DialFrost 90
    Smooth Numbers GolfingSuccess 72
    𝑒 NoneTheFewer 67
    π NoneTheFewer 356
    Spelling Numbers NoneTheFewer 940
    SI Units dokutan 1,173
    ROT13 NoneTheFewer 237
    Arithmetic Numbers DialFrost 🥉 98
    Arithmetic Numbers DialFrost 79
    Reverse Polish Notation NoneTheFewer 266
    Arithmetic Numbers DialFrost 62
    Hexagonal Spiral bitsandbeyond 111
    Pernicious Numbers (Long) NoneTheFewer 95
    Pernicious Numbers NoneTheFewer 84
    Pangram Grep NoneTheFewer 89
    Ordinal Numbers NoneTheFewer 168
    Odious Numbers (Long) NoneTheFewer 82
    Odious Numbers NoneTheFewer 80
    Niven Numbers (Long) NoneTheFewer 80
    Niven Numbers NoneTheFewer 78
    Morse Decoder NoneTheFewer 1,262
    Sphenic Numbers dokutan 100
    Look and Say NoneTheFewer 200
    Leyland Numbers NoneTheFewer 209
    Jacobi Symbol NoneTheFewer 222
    √2 dokutan 59
    φ dokutan 81
    ISBN NoneTheFewer 151
    Intersection NoneTheFewer 273
    ln 2 dokutan 61
    π dokutan 62
    Happy Numbers (Long) NoneTheFewer 149
    Happy Numbers NoneTheFewer 148
    Foo Fizz Buzz Bar NoneTheFewer 173
    Fibonacci NoneTheFewer 54
    Evil Numbers (Long) NoneTheFewer 82
    Evil Numbers NoneTheFewer 80
    Emojify NoneTheFewer 382
    Emirp Numbers (Long) NoneTheFewer 162
    Emirp Numbers NoneTheFewer 161
    Card Number Validation NoneTheFewer 241
    CSS Colors NoneTheFewer 3,306
    Day of Week benanlam 155
    Christmas Trees NoneTheFewer 150
    brainfuck NoneTheFewer 692
    Transpose Sentence TheZwierzLF 57
    Arabic to Roman NoneTheFewer 268
    Abundant Numbers (Long) NoneTheFewer 175
    Van Eck Sequence osNiko 96
    Abundant Numbers NoneTheFewer 174
    Divisors NoneTheFewer 122
    Lucky Numbers TheZwierzLF 80
    Kaprekar Numbers edsrzf 218
    Leap Years benanlam 58
    Hexdump TheZwierzLF 195
    12 Days of Christmas Babafaba 2,389
    Gijswijt’s Sequence TheZwierzLF 110
    φ CommandLeo 55
    brainfuck TheZwierzLF 149
    Kaprekar Numbers edsrzf 🥈 83
    Hilbert Curve canissimia 💎 244
    Kaprekar Numbers edsrzf 🥈 110
    Hexdump IISResetMe 167
    Set Bmrl7 146
    Mandelbrot TheZwierzLF 128
    Niven Numbers (Long) fuzzylojik-golf 77
    Intersection Bmrl7 136
    Reverse Polish Notation IISResetMe 88
    Niven Numbers fuzzylojik-golf 51
    Calendar IISResetMe 161
    Niven Numbers Bmrl7 45
    Card Number Validation Bmrl7 115
    Intersection frankgraziano 🥈 305
    Poker edsrzf 💎 404
    12 Days of Christmas amazingalek 508
    Minesweeper albanian-laundromat 🥈 217