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

    Irratix 🇳🇱

    89,073
    90,439
    🥇91
    🥈5
    🥉13

    101 / 123 Holes

    🔣

    21 / 62 Langs

    🏆

    51 / 98 Cheevos

    📅

    3 Holes Authored

    12 Days of Christmas
    34th 20th 26th 13th 70th 9th
    99 Bottles of Beer
    50th 32nd 24th 22nd 80th
    Abundant Numbers
    6th 12th36th17th 48th31st 28th12th 19th 54th62nd 8th
    Abundant Numbers (Long)
    16th 21st 27th 11th 32nd
    Arabic to Roman
    22nd 17th70th 22nd 11th 78th
    Arithmetic Numbers
    1st
    Arrows
    21st 21st 37th
    Ascending Primes
    23rd
    ASCII Table
    51st 25th 5th 205th
    brainfuck
    33rd 14th 9th 47th
    Card Number Validation
    15th
    Catalan Numbers
    38th 1st 1st1st
    Catalan’s Constant
    12th 21st
    Christmas Trees
    12th 7th 4th 23rd19th 162nd29th
    Collatz
    18th3rd18th 25th 35th1st 36th37th
    CSS Colors
    5th 4th 10th 16th15th
    Cubes
    20th 7th 9th 139th
    Day of Week
    1st
    Diamonds
    38th 24th 13th 54th35th
    Divisors
    12th 35th26th28th 39th 38th26th 1st 1st41st 8th
    Emirp Numbers
    7th 28th 16th 12th 21st12th22nd 34th22nd 6th
    Emirp Numbers (Long)
    15th 12th 19th
    Emojify
    16th 50th
    Evil Numbers
    24th10th16th 23rd 48th 34th15th 1st34th 8th
    Evil Numbers (Long)
    31st 17th 13th 38th
    Factorial Factorisation
    11th
    Farey Sequence
    30th
    Fibonacci
    31st 12th42nd1st 1st1st148th 67th1st 1st 44th 1st7th 1st
    Fizz Buzz
    8th 20th150th109th68th 18th104th103rd 161st1st 47th9th 101st58th1st75th13th
    Foo Fizz Buzz Bar
    52nd45th37th 41st 47th19th 1st32nd
    Forsyth–Edwards Notation
    26th
    Fractions
    31st 34th 23rd 138th1st
    Game of Life
    11th
    Gijswijt’s Sequence
    12th
    Happy Numbers
    3rd 44th30th21st 20th 44th 33rd12th 1st46th 11th
    Happy Numbers (Long)
    25th18th6th 33rd 23rd12th 35th35th
    Hexdump
    2nd 66th
    Intersection
    10th 19th 4th 64th
    Inventory Sequence
    36th 26th 4th
    ISBN
    10th 14th 5th 38th
    Jacobi Symbol
    9th 7th 12th9th 31st
    Kolakoski Constant
    6th 6th 2nd 18th16th
    Kolakoski Sequence
    6th5th5th 15th11th 124th17th
    Leap Years
    23rd 7th21st3rd 16th8th 34th1st 18th 47th144th27th 9th
    Levenshtein Distance
    17th 12th 1st 12th 91st1st
    Leyland Numbers
    14th 20th 37th 7th 187th41st
    ln 2
    16th 81st
    Look and Say
    28th 15th 71st52nd
    Lucky Numbers
    20th 140th21st
    Lucky Tickets
    9th 16th 43rd14th
    Maze
    17th
    Medal Tally
    7th
    Morse Decoder
    6th 15th 39th
    Morse Encoder
    9th 6th 12th 6th 37th
    Musical Chords
    14th
    Niven Numbers
    42nd37th29th 26th 27th 43rd1st 25th 36th75th29th 21st
    Niven Numbers (Long)
    32nd 29th 1st 212th
    Number Spiral
    19th 11th 13th 63rd
    Odious Numbers
    24th10th12th 20th 45th 35th11th 1st29th 9th
    Odious Numbers (Long)
    21st 19th 11th 1st
    Ordinal Numbers
    28th 14th 29th 1st 23rd141st
    Pangram Grep
    22nd 12th 1st 60th57th
    Pascal’s Triangle
    28th 17th 43rd 17th 126th
    Pernicious Numbers
    1st 1st 18th 34th1st 1st21st
    Pernicious Numbers (Long)
    19th 19th 12th 191st
    Poker
    8th 36th
    Prime Numbers
    23rd31st14th 35th1st37th1st 30th 54th24th 13th
    Prime Numbers (Long)
    21st22nd13th 45th1st27th1st 1st 1st62nd 5th
    Proximity Grid
    8th
    QR Decoder
    6th 20th
    Quine
    1st 33rd 67th1st 1st96th
    Recamán
    4th 1st 17th 178th
    Repeating Decimals
    15th
    Reverse Polish Notation
    10th 138th
    Rijndael S-box
    14th
    Rock-paper-scissors-Spock-lizard
    13th 47th
    Roman to Arabic
    27th 1st10th
    Rule 110
    5th 9th 61st21st
    Scrambled Sort
    18th
    Seven Segment
    24th 11th 9th 31st
    SI Units
    9th
    Sierpiński Triangle
    11th7th9th 13th8th 28th7th 6th
    Smith Numbers
    4th 12th18th15th 9th 17th16th 29th
    Spelling Numbers
    6th 62nd
    Star Wars Opening Crawl
    19th
    Sudoku
    6th 37th
    Sudoku (Fill-in)
    15th 61st
    Ten-pin Bowling
    15th
    Time Distance
    13th 70th
    Tongue-twisters
    23rd 17th 24th 170th
    United States
    3rd 43rd
    Vampire Numbers
    4th 8th 22nd21st
    Van Eck Sequence
    31st 22nd 19th 16th 251st
    Zodiac Signs
    11th 49th
    γ
    5th 11th
    λ
    7th 29th 14th 16th15th 41st26th
    π
    28th 63rd64th
    τ
    23rd 58th43rd
    φ
    24th 27th1st 48th36th
    √2
    19th 26th1st 128th29th
    𝑒
    23rd 16th 20th 29th 116th24th