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

    Recent Solutions

    Hole Golfer Bytes Time Submitted
    Ascending Primes JOrE20 78
    Sudoku (Fill-in) JOrE20 231
    Polygon Triangulations JOrE20 148
    Pangram Grep zptr1 60
    Kolakoski Constant JOrE20 85
    Musical Chords JOrE20 184
    p-adic Expansion JOrE20 241
    Rectangle Fill JOrE20 149
    Thue–Morse Constant JOrE20 76
    ln 2 JOrE20 54
    Look and Say bitsandbeyond 69
    Jacobi Symbol sean-niemann 94
    Tic-tac-toe zptr1 🥇 76
    Chess Move Validation madex 121
    Diamonds zzh1996 76
    ASCII Table zzh1996 133
    Mandelbrot JOrE20 122
    Prime Numbers JOrE20 38
    Prime Numbers (Long) JOrE20 39
    Partition Numbers JOrE20 61
    Catalan Numbers JOrE20 🥇 41
    ASCII Table JOrE20 148
    Huffman Encoder JOrE20 244
    Pernicious Numbers (Long) null35 55
    Pernicious Numbers null35 🥇 34
    Hilbert Curve JOrE20 213
    Polyominoes JOrE20 274
    Star Wars Opening Crawl JOrE20 264
    Card Number Validation JOrE20 71
    Sudoku rucin93 🥈 303
    Smith Numbers Europe2048 116
    Sierpiński Triangle Europe2048 85
    Leap Years o0lit3 🥇 40
    DFA Simulator dokutan 293
    Sudoku bitsandbeyond 337
    12 Days of Christmas Europe2048 475
    Chess Move Validation zzh1996 125
    Arabic to Roman Europe2048 125
    Scrambled Sort JayXon 🥇 100
    Sudoku emplv 💎 301
    24 Game JOrE20 213
    Lyndon Factorization JOrE20 87
    Alphabetic Numbers JOrE20 174
    Leyland Numbers JOrE20 90
    Morse Decoder JOrE20 153
    Pascal’s Triangle Europe2048 69
    Sudoku JOrE20 447
    Partition Numbers Europe2048 122
    Poker JOrE20 382
    Chess Move Validation emgordon154 131
    Farey Sequence egu555 70
    N Queens JOrE20 113
    Divisors egu555 64
    Zodiac Signs JOrE20 153
    Multitap Input JOrE20 106
    Diamonds JOrE20 83
    Smith Numbers JOrE20 93
    Musical Chords edsrzf 🥈 118
    Pascal’s Triangle zptr1 63
    PalindromemordnilaP stellartux 130
    Niven Numbers stellartux 46
    Continued Fractions egu555 95
    Collatz egu555 57
    Hexdump JOrE20 207
    λ JOrE20 217
    Chess Move Validation JOrE20 120
    Maze JOrE20 145
    Lucky Numbers JOrE20 69
    Tower of Hanoi JOrE20 51
    Tower of Hanoi Europe2048 53
    Reversi JOrE20 125
    Proximity Grid JOrE20 197
    Minesweeper JOrE20 117
    Rule 110 JOrE20 92
    Inventory Sequence zptr1 56
    Ulam Sequence JOrE20 65
    Seven Segment JOrE20 115
    Chess Move Validation rucin93 111
    Musical Chords rucin93 💎 115
    Reverse Polish Notation zptr1 90
    Reverse Polish Notation Europe2048 109
    Sudoku (Fill-in) emplv 🥈 164
    Fibonacci NacMacFigl 47
    Catalan’s Constant egu555 88
    Chess Move Validation NacMacFigl 262
    Quine zptr1 🥇 25
    Fractions zptr1 76
    Catalan Numbers egu555 43
    Seven Segment o0lit3 🥈 104
    Day of Week stellartux 104
    Lucky Tickets JOrE20 🥇 90
    π Steffan153 🥇 60
    Hexdump rucin93 💎 179
    CSS Colors JOrE20 733
    Collatz stellartux 63
    Fractions JOrE20 73
    Odious Numbers (Long) o0lit3 40
    Divisors Europe2048 56
    Tutorial zptr1 61
    Fibonacci zptr1 🥇 33