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

    Irratix 🇳🇱

    89,074
    90,439
    🥇91
    🥈5
    🥉13

    101 / 123 Holes

    🔣

    21 / 62 Langs

    🏆

    51 / 99 Cheevos

    📅

    3 Holes Authored

    12 Days of Christmas
    8th 26th 7th 65th 9th
    99 Bottles of Beer
    33rd 24th 13th 41st
    Abundant Numbers
    5th 16th38th17th 48th31st 29th12th 19th 34th62nd 8th
    Abundant Numbers (Long)
    16th 21st 27th 11th 93rd
    Arabic to Roman
    23rd 17th70th 22nd 7th 22nd
    Arithmetic Numbers
    1st
    Arrows
    21st 14th 64th
    Ascending Primes
    23rd
    ASCII Table
    51st 25th 5th 62nd
    brainfuck
    33rd 14th 7th 30th
    Card Number Validation
    15th
    Catalan Numbers
    38th 1st 1st1st
    Catalan’s Constant
    12th 12th
    Christmas Trees
    12th 7th 4th 23rd19th 53rd31st
    Collatz
    11th3rd18th 25th 35th1st 36th38th
    CSS Colors
    6th 6th 8th 13th23rd
    Cubes
    25th 7th 6th 52nd
    Day of Week
    1st
    Diamonds
    38th 24th 13th 32nd37th
    Divisors
    12th 36th26th28th 39th 38th26th 1st 1st41st 8th
    Emirp Numbers
    4th 28th 18th 8th 18th16th22nd 72nd34th 6th
    Emirp Numbers (Long)
    14th 12th 16th
    Emojify
    17th 61st
    Evil Numbers
    19th14th16th 23rd 48th 34th15th 1st34th 8th
    Evil Numbers (Long)
    35th 17th 13th 38th
    Factorial Factorisation
    12th
    Farey Sequence
    30th
    Fibonacci
    32nd 3rd42nd1st 1st20th148th 67th1st 1st 44th 1st7th 1st
    Fizz Buzz
    8th 20th141st109th68th 18th104th103rd 161st1st 47th9th 101st42nd3rd75th13th
    Foo Fizz Buzz Bar
    47th45th37th 41st 47th19th 19th34th
    Forsyth–Edwards Notation
    15th
    Fractions
    31st 34th 23rd 58th1st
    Game of Life
    10th
    Gijswijt’s Sequence
    12th
    Happy Numbers
    3rd 44th30th22nd 14th 45th 34th17th 36th54th 11th
    Happy Numbers (Long)
    24th19th6th 33rd 23rd12th 21st37th
    Hexdump
    3rd 38th
    Intersection
    10th 19th 2nd 25th
    Inventory Sequence
    36th 26th 4th
    ISBN
    8th 14th 5th 40th
    Jacobi Symbol
    8th 7th 12th5th 29th
    Kolakoski Constant
    6th 6th 2nd 4th18th
    Kolakoski Sequence
    6th12th5th 15th11th 53rd17th
    Leap Years
    23rd 7th21st3rd 19th8th 34th1st 18th 47th145th27th 9th
    Levenshtein Distance
    17th 12th 1st 8th 62nd16th
    Leyland Numbers
    20th 37th 7th 70th42nd
    ln 2
    16th 91st
    Look and Say
    28th 15th 29th52nd
    Lucky Numbers
    20th 89th22nd
    Lucky Tickets
    9th 12th 22nd16th
    Maze
    11th
    Medal Tally
    10th
    Morse Decoder
    6th 13th 21st
    Morse Encoder
    9th 6th 12th 6th 24th
    Musical Chords
    7th
    Niven Numbers
    39th38th29th 26th 27th 43rd1st 25th 38th75th29th 21st
    Niven Numbers (Long)
    35th 29th 1st 217th
    Number Spiral
    19th 11th 8th 31st
    Odious Numbers
    16th14th12th 20th 45th 35th11th 1st29th 9th
    Odious Numbers (Long)
    28th 19th 11th 1st
    Ordinal Numbers
    27th 14th 29th 1st 23rd55th
    Pangram Grep
    22nd 12th 1st 116th57th
    Pascal’s Triangle
    28th 17th 43rd 17th 44th
    Pernicious Numbers
    1st 1st 18th 34th1st 1st21st
    Pernicious Numbers (Long)
    20th 19th 12th 197th
    Poker
    5th 23rd
    Prime Numbers
    21st32nd17th 35th1st37th1st 30th 54th27th 13th
    Prime Numbers (Long)
    20th22nd13th 45th1st27th1st 1st 1st62nd 5th
    Proximity Grid
    5th
    QR Decoder
    6th 11th
    Quine
    1st 33rd 67th1st 1st96th
    Recamán
    4th 1st 17th 56th
    Repeating Decimals
    9th
    Reverse Polish Notation
    10th 48th
    Rijndael S-box
    9th
    Rock-paper-scissors-Spock-lizard
    11th 24th
    Roman to Arabic
    29th 1st21st
    Rule 110
    5th 11th 41st23rd
    Scrambled Sort
    8th
    Seven Segment
    25th 12th 9th 18th
    SI Units
    3rd
    Sierpiński Triangle
    11th7th9th 13th8th 38th7th 6th
    Smith Numbers
    4th 12th18th15th 9th 17th11th 15th
    Spelling Numbers
    3rd 93rd
    Star Wars Opening Crawl
    8th
    Sudoku
    6th 22nd
    Sudoku (Fill-in)
    11th 69th
    Ten-pin Bowling
    11th
    Time Distance
    9th 34th
    Tongue-twisters
    8th 22nd 2nd 57th
    United States
    21st 63rd
    Vampire Numbers
    1st 5th 14th25th
    Van Eck Sequence
    30th 22nd 19th 16th 152nd
    Zodiac Signs
    10th 65th
    γ
    5th 18th
    λ
    3rd 10th 5th 6th8th 24th20th
    π
    28th 38th64th
    τ
    23rd 36th44th
    φ
    24th 27th1st 1st36th
    √2
    19th 35th1st 101st29th
    𝑒
    23rd 16th 20th 29th 100th24th