Ctrl+P again to print, arrows/tab to navigate results, enter to confirm

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

    Recent Solutions

    Hole Golfer Bytes Time Submitted
    Trinomial Triangle dokutan 1,236
    Sierpiński Triangle dokutan 212
    Rijndael S-box dokutan 652
    Polyominoes dokutan 🥉 980
    Number Spiral dokutan 304
    N Queens dokutan 🥉 748
    Mandelbrot dokutan 348
    Leyland Numbers dokutan 684
    Kaprekar Numbers dokutan 392
    Hilbert Curve dokutan 💎 488
    Hexagonal Spiral dokutan 320
    Factorial Factorisation dokutan 584
    Diamonds dokutan 192
    Cubes dokutan 572
    Catalan Numbers dokutan 2,056
    24 Game dokutan 4,296
    12 Days of Christmas dokutan 512
    Rule 110 dokutan 1,300
    Tower of Hanoi KatieLG 368
    Fizz Buzz mwarvik 82
    Fibonacci albanian-laundromat 54
    Hexagonal Spiral bitsandbeyond 270
    Tower of Hanoi JayXon 🥇 65
    Leap Years edsrzf 🥇 52
    Pangram Grep kmathis22 138
    Divisors Yax42 99
    γ JOrE20 1,020
    Tongue-twisters prestosilver 553
    Happy Numbers (Long) snoozingnewt 141
    Arrows dokutan 627
    Day of Week snoozingnewt 🥇 110
    Odious Numbers (Long) snoozingnewt 🥇 49
    Odious Numbers snoozingnewt 🥇 48
    Evil Numbers snoozingnewt 🥇 48
    Evil Numbers (Long) snoozingnewt 🥇 50
    Prime Numbers tomh1012 84
    Arrows snoozingnewt 137
    λ sean-niemann 🥈 239
    Zeckendorf Representation sean-niemann 102
    Scrambled Sort snoozingnewt 🥉 162
    Tower of Hanoi dokutan 77
    Niven Numbers snoozingnewt 🥇 53
    Pernicious Numbers snoozingnewt 🥇 47
    Star Wars Opening Crawl albanian-laundromat 🥈 496
    Lucky Numbers sean-niemann 🥈 77
    Tower of Hanoi DialFrost 67
    Tower of Hanoi sean-niemann 🥇 65
    Spelling Numbers dokutan 🥉 1,026
    Lucky Tickets dokutan 5,318
    Van Eck Sequence KatieLG 1,727
    Vampire Numbers KatieLG 1,058
    Trinomial Triangle KatieLG 1,873
    Tongue-twisters KatieLG 516
    Smith Numbers KatieLG 1,676
    Sierpiński Triangle KatieLG 243
    Rule 110 KatieLG 2,132
    Recamán KatieLG 824
    Prime Numbers (Long) KatieLG 4,374
    Polyominoes KatieLG 1,393
    Pernicious Numbers (Long) KatieLG 14,227
    Pascal’s Triangle KatieLG 711
    Odious Numbers (Long) KatieLG 1,694
    Niven Numbers (Long) KatieLG 5,671
    N Queens KatieLG 1,210
    Mandelbrot KatieLG 624
    Lucky Numbers KatieLG 3,809
    Look and Say KatieLG 738
    Leap Years KatieLG 628
    Kolakoski Sequence KatieLG 367
    Inventory Sequence KatieLG 1,785
    Hilbert Curve KatieLG 983
    Gijswijt’s Sequence KatieLG 279
    Foo Fizz Buzz Bar KatieLG 1,587
    Fizz Buzz KatieLG 296
    Farey Sequence KatieLG 2,968
    Factorial Factorisation KatieLG 826
    Evil Numbers (Long) KatieLG 1,698
    Emirp Numbers (Long) KatieLG 1,040
    Divisors KatieLG 861
    Diamonds KatieLG 427