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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
    Roman to Arabic kmathis22 244
    Arabic to Roman kmathis22 217
    Forsyth–Edwards Notation edsrzf 🥈 150
    Forsyth–Edwards Notation JayXon 💎 147
    Sudoku (Fill-in) kmathis22 978
    Sudoku kmathis22 949
    Set sean-niemann 253
    United States sean-niemann 172
    Hexagonal Spiral bitsandbeyond 283
    Tic-tac-toe kmathis22 236
    Christmas Trees weber-hge 210
    Trinomial Triangle sean-niemann 130
    ASCII Table Florian-Mt 240
    Fibonacci Pyroan 60
    QR Decoder Yax42 173
    γ JOrE20 1,028
    Foo Fizz Buzz Bar amazingalek 142
    Poker kmathis22 461
    Fizz Buzz mwarvik 92
    Fizz Buzz amazingalek 92
    Rock-paper-scissors-Spock-lizard ravnskjaer 648
    Diamonds ravnskjaer 256
    Catalan Numbers ravnskjaer 288
    brainfuck ravnskjaer 426
    Billiards ravnskjaer 647
    24 Game ravnskjaer 1,121
    United States ravnskjaer 422
    Tongue-twisters ravnskjaer 475
    Spelling Numbers ravnskjaer 738
    Sierpiński Triangle ravnskjaer 295
    Seven Segment ravnskjaer 331
    Set ravnskjaer 587
    Scrambled Sort ravnskjaer 345
    ROT13 ravnskjaer 156
    Quine ravnskjaer 120
    Pernicious Numbers (Long) ravnskjaer 178
    Partition Numbers ravnskjaer 667
    PalindromemordnilaP ravnskjaer 186
    Number Spiral ravnskjaer 280
    Medal Tally ravnskjaer 280
    Lucky Tickets ravnskjaer 973
    Lucky Numbers ravnskjaer 212
    Look and Say ravnskjaer 192
    ln 2 ravnskjaer 659
    Leyland Numbers ravnskjaer 245
    Levenshtein Distance ravnskjaer 320
    Leap Years ravnskjaer 82
    Kolakoski Sequence ravnskjaer 192
    Kolakoski Constant ravnskjaer 659
    Kaprekar Numbers ravnskjaer 201
    Jacobi Symbol ravnskjaer 442
    ISBN ravnskjaer 149
    Inventory Sequence ravnskjaer 174
    Intersection ravnskjaer 290
    Hexdump ravnskjaer 562
    Happy Numbers (Long) ravnskjaer 138
    Happy Numbers ravnskjaer 136
    Gijswijt’s Sequence ravnskjaer 318
    Game of Life ravnskjaer 384
    Fractions ravnskjaer 178
    Forsyth–Edwards Notation ravnskjaer 226
    Foo Fizz Buzz Bar ravnskjaer 156
    Fizz Buzz ravnskjaer 99
    Fibonacci ravnskjaer 74
    Farey Sequence ravnskjaer 232
    Factorial Factorisation ravnskjaer 668
    Evil Numbers (Long) ravnskjaer 83
    Evil Numbers ravnskjaer 81
    Emojify ravnskjaer 317
    Emirp Numbers (Long) ravnskjaer 228
    Emirp Numbers ravnskjaer 218
    Divisors ravnskjaer 100
    DFA Simulator ravnskjaer 639
    Day of Week ravnskjaer 142
    Cubes ravnskjaer 397
    CSS Colors ravnskjaer 1,634
    Collatz ravnskjaer 105
    Christmas Trees ravnskjaer 136
    Catalan’s Constant ravnskjaer 659
    Card Number Validation ravnskjaer 167