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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 Chars Time Submitted
    λ JOrE20 1,014
    Quine frankgraziano 66
    Tutorial frankgraziano 127
    Tower of Hanoi HumanoidCPU 99
    Tower of Hanoi KatieLG 10,729
    Taxicab Numbers HumanoidCPU 5,139
    𝑒 BREMAUCY 1,011
    Hexagonal Spiral HumanoidCPU 1,214
    Apéry’s Constant HumanoidCPU 1,011
    Tutorial HumanoidCPU 102
    Smith Numbers HumanoidCPU 2,585
    Sierpiński Triangle HumanoidCPU 433
    Rule 110 HumanoidCPU 10,309
    Prime Numbers (Long) HumanoidCPU 8,415
    Prime Numbers HumanoidCPU 130
    Odious Numbers (Long) HumanoidCPU 2,954
    Number Spiral HumanoidCPU 329
    N Queens HumanoidCPU 1,551
    Lucky Numbers HumanoidCPU 6,829
    Kaprekar Numbers HumanoidCPU 585
    Inventory Sequence HumanoidCPU 4,632
    Gijswijt’s Sequence HumanoidCPU 4,009
    Happy Numbers (Long) HumanoidCPU 847
    Happy Numbers HumanoidCPU 180
    Foo Fizz Buzz Bar HumanoidCPU 7,728
    Evil Numbers (Long) HumanoidCPU 2,961
    Evil Numbers HumanoidCPU 129
    Emirp Numbers (Long) HumanoidCPU 1,645
    Emirp Numbers HumanoidCPU 217
    Diamonds HumanoidCPU 1,290
    Christmas Trees HumanoidCPU 664
    Collatz HumanoidCPU 5,235
    ASCII Table HumanoidCPU 318
    Arithmetic Numbers HumanoidCPU 53,027
    Abundant Numbers (Long) HumanoidCPU 1,465
    24 Game HumanoidCPU 15,165
    12 Days of Christmas HumanoidCPU 2,604
    Kolakoski Sequence HumanoidCPU 2,008
    Rijndael S-box HumanoidCPU 809
    Pernicious Numbers HumanoidCPU 179
    Pernicious Numbers (Long) HumanoidCPU 29,175
    Pascal’s Triangle HumanoidCPU 818
    Recamán HumanoidCPU 1,406
    Niven Numbers HumanoidCPU 166
    Sphenic Numbers HumanoidCPU 12,469
    Divisors HumanoidCPU 1,375
    Ascending Primes HumanoidCPU 721
    Tutorial FEZfan 108
    Pernicious Numbers snoozingnewt 68
    Tutorial Babafaba 188
    Evil Numbers (Long) Babafaba 115
    Evil Numbers Babafaba 113
    Odious Numbers (Long) Babafaba 110
    Odious Numbers Babafaba 109
    Quine snoozingnewt 66
    Tutorial retrohun 188
    Tutorial snoozingnewt 106
    Fizz Buzz snoozingnewt 98
    Niven Numbers GolfingSuccess 48
    Odious Numbers (Long) GolfingSuccess 75
    Evil Numbers (Long) GolfingSuccess 75
    Odious Numbers GolfingSuccess 74
    Evil Numbers GolfingSuccess 74
    Fibonacci GolfingSuccess 49
    Tutorial GolfingSuccess 75
    Hilbert Curve HumanoidCPU 2,121
    Highly Composite Numbers HumanoidCPU 523
    Odd Polyomino Tiling HumanoidCPU 21,854
    Tutorial Vexxter9 193
    Polyominoes HumanoidCPU 6,105
    Semiprime Numbers HumanoidCPU 18,048
    Trinomial Triangle HumanoidCPU 2,116
    99 Bottles of Beer HumanoidCPU 12,294
    Catalan Numbers HumanoidCPU 3,081
    Cubes HumanoidCPU 3,058
    Tongue-twisters HumanoidCPU 560
    Van Eck Sequence HumanoidCPU 4,564
    Vampire Numbers HumanoidCPU 1,391
    Fibonacci HumanoidCPU 164
    Abundant Numbers HumanoidCPU 264