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 Chars Time Submitted
    Inventory Sequence bitsandbeyond 🥈 46
    Tower of Hanoi nwellnhof 52
    Musical Chords IISResetMe 353
    SI Units dokutan 654
    Medal Tally IISResetMe 168
    Arabic to Roman IISResetMe 173
    Seven Segment IISResetMe 171
    Zeckendorf Representation IISResetMe 165
    Morse Encoder IISResetMe 132
    Cubes IISResetMe 191
    Fractions MeWhenI 73
    Factorial Factorisation DialFrost 100
    Evil Numbers DialFrost 🥈 28
    Evil Numbers (Long) DialFrost 🥇 29
    Gijswijt’s Sequence bitsandbeyond 68
    Prime Numbers DialFrost 29
    Prime Numbers (Long) DialFrost 🥇 30
    Prime Numbers NoneTheFewer 108
    Pernicious Numbers NoneTheFewer 129
    Pangram Grep NoneTheFewer 119
    Ordinal Numbers NoneTheFewer 157
    Odious Numbers (Long) NoneTheFewer 111
    Odious Numbers NoneTheFewer 109
    Niven Numbers NoneTheFewer 112
    Morse Decoder NoneTheFewer 763
    Look and Say NoneTheFewer 266
    Leyland Numbers NoneTheFewer 266
    Leap Years NoneTheFewer 77
    ISBN NoneTheFewer 237
    Intersection NoneTheFewer 449
    Happy Numbers NoneTheFewer 314
    Fractions NoneTheFewer 302
    Foo Fizz Buzz Bar NoneTheFewer 232
    Fizz Buzz NoneTheFewer 165
    Fibonacci NoneTheFewer 64
    Evil Numbers (Long) NoneTheFewer 120
    Evil Numbers NoneTheFewer 118
    Emojify NoneTheFewer 320
    Day of Week NoneTheFewer 58
    CSS Colors NoneTheFewer 2,989
    Collatz NoneTheFewer 105
    Calendar JOrE20 241
    Abundant Numbers bitsandbeyond 🥈 41
    Fizz Buzz DocJade 72
    Collatz DocJade 70
    Divisors NoneTheFewer 254
    Abundant Numbers (Long) JOrE20 192
    Emirp Numbers (Long) JOrE20 1,155
    Levenshtein Distance KatieLG 468
    Fibonacci albanian-laundromat 28
    Prime Numbers albanian-laundromat 34
    Hexagonal Spiral bitsandbeyond 88
    Hexdump IISResetMe 167
    Reverse Polish Notation IISResetMe 88
    Calendar IISResetMe 161
    Fractions IISResetMe 82
    Zeckendorf Representation JOrE20 125
    12 Days of Christmas IISResetMe 452
    Fibonacci DialFrost 🥇 27
    Fibonacci KasperKivimaeki 44
    Tower of Hanoi sean-niemann 🥇 51
    Fibonacci DelaneyJM 35
    γ JOrE20 1,004
    Tongue-twisters prestosilver 524
    Tower of Hanoi gigaprofisi 3,593
    Rijndael S-box kurkale6ka 780
    Fizz Buzz mwarvik 96
    Tutorial kurkale6ka 100
    Prime Numbers JOrE20 43
    Pernicious Numbers (Long) DialFrost 🥇 32
    Leap Years DialFrost 28
    Fibonacci REOScotte 31
    Tutorial JOrE20 26
    Gray Code Encoder JOrE20 37
    Hilbert Curve bitsandbeyond 🥈 139
    Ellipse Perimeters bitsandbeyond 67
    Gray Code Decoder bitsandbeyond 44
    Day of Week KasperKivimaeki 18
    Binary Lambda Calculus bitsandbeyond 126
    Day of Week CornerMercury 🥇 16