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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
    590th 624th 58th 381st 1,458th
    99 Bottles of Beer
    1,135th 677th 47th 294th
    Abundant Numbers
    2,530th 843rd1,631st837th 1,220th154th 2,969th392nd 2,277th 491st2,660th 2,925th
    Abundant Numbers (Long)
    894th 769th 198th 443rd 926th
    Arabic to Roman
    881st 734th272nd 936th 285th 342nd
    Arithmetic Numbers
    6th
    Arrows
    747th 148th 533rd
    Ascending Primes
    375th
    ASCII Table
    610th 615th 48th 586th
    brainfuck
    794th 595th 28th 119th
    Card Number Validation
    109th
    Catalan Numbers
    893rd 137th 30th113th
    Catalan’s Constant
    207th 147th
    Christmas Trees
    776th 619th 82nd 1,547th315th 465th670th
    Collatz
    691st116th594th 1,106th 2,265th4th 290th1,036th
    CSS Colors
    294th 313th 108th 110th536th
    Cubes
    518th 502nd 115th 271st
    Day of Week
    102nd
    Diamonds
    798th 861st 242nd 291st924th
    Divisors
    4,540th 1,225th1,596th2,097th 426th 3,946th1,132nd 269th 35th1,450th 1,268th
    Emirp Numbers
    666th 1,042nd 1,188th 762nd 1,164th494th1,896th 366th1,047th 818th
    Emirp Numbers (Long)
    397th 315th 435th
    Emojify
    205th 385th
    Evil Numbers
    790th711th862nd 846th 2,335th 3,368th492nd 45th1,987th 1,881st
    Evil Numbers (Long)
    906th 645th 439th 115th
    Factorial Factorisation
    168th
    Farey Sequence
    540th
    Fibonacci
    3,619th 732nd865th627th 425th985th6,468th 6,617th224th 511th 4,413th 55th1,112th 934th
    Fizz Buzz
    4,799th 10,335th2,237th3,648th2,156th 5,071st5,867th5,018th 7,018th23rd 1,965th4,214th 5,268th783rd2,670th4,796th5,284th
    Foo Fizz Buzz Bar
    1,303rd1,416th1,311th 2,228th 1,645th455th 24th1,894th
    Forsyth–Edwards Notation
    164th
    Fractions
    668th 868th 586th 480th10th
    Game of Life
    82nd
    Gijswijt’s Sequence
    168th
    Happy Numbers
    764th 1,242nd1,578th1,120th 931st 1,032nd 1,920th678th 431st1,860th 1,452nd
    Happy Numbers (Long)
    691st782nd447th 694th 1,061st241st 154th1,037th
    Hexdump
    49th 225th
    Intersection
    410th 563rd 28th 170th
    Inventory Sequence
    684th 581st 76th
    ISBN
    283rd 448th 22nd 320th
    Jacobi Symbol
    238th 240th 309th114th 203rd
    Kolakoski Constant
    220th 169th 34th 70th324th
    Kolakoski Sequence
    423rd360th374th 964th136th 324th523rd
    Leap Years
    4,228th 436th840th265th 1,201st240th 3,530th36th 1,597th 2,608th1,164th1,668th 1,241st
    Levenshtein Distance
    605th 629th 112th 185th 574th58th
    Leyland Numbers
    931st 636th 316th 216th1,040th
    ln 2
    214th 385th
    Look and Say
    660th 78th 425th494th
    Lucky Numbers
    446th 421st513th
    Lucky Tickets
    339th 57th 30th348th
    Maze
    156th
    Medal Tally
    188th
    Morse Decoder
    277th 128th 172nd
    Morse Encoder
    206th 218th 651st 47th 158th
    Musical Chords
    142nd
    Niven Numbers
    1,237th1,082nd1,299th 1,170th 1,433rd 3,005th63rd 760th 2,787th437th2,030th 1,490th
    Niven Numbers (Long)
    1,273rd 1,224th 55th 1,080th
    Number Spiral
    195th 365th 161st 292nd
    Odious Numbers
    583rd646th692nd 712th 2,063rd 2,799th370th 43rd1,858th 1,570th
    Odious Numbers (Long)
    589th 545th 231st 41st
    Ordinal Numbers
    917th 936th 1,080th 44th 1,030th339th
    Pangram Grep
    1,838th 1,698th 25th 795th1,061st
    Pascal’s Triangle
    917th 851st 1,232nd 484th 228th
    Pernicious Numbers
    263rd 511th 1,707th 1,983rd175th 38th913th
    Pernicious Numbers (Long)
    819th 674th 608th 913th
    Poker
    29th 179th
    Prime Numbers
    947th2,028th1,217th 1,066th1st3,310th168th 2,785th 269th1,443rd 2,624th
    Prime Numbers (Long)
    754th959th810th 1,215th1st1,993rd187th 497th 106th1,178th 1,036th
    Proximity Grid
    31st
    QR Decoder
    84th 103rd
    Quine
    33rd 4,303rd 3,790th234th 163rd5,229th
    Recamán
    262nd 22nd 610th 379th
    Repeating Decimals
    179th
    Reverse Polish Notation
    138th 359th
    Rijndael S-box
    150th
    Rock-paper-scissors-Spock-lizard
    58th 191st
    Roman to Arabic
    431st 20th469th
    Rule 110
    189th 87th 305th335th
    Scrambled Sort
    161st
    Seven Segment
    443rd 368th 88th 98th
    SI Units
    81st
    Sierpiński Triangle
    156th176th127th 745th54th 232nd277th 500th
    Smith Numbers
    941st 370th404th389th 313th 548th107th 175th
    Spelling Numbers
    105th 725th
    Star Wars Opening Crawl
    134th
    Sudoku
    100th 180th
    Sudoku (Fill-in)
    149th 342nd
    Ten-pin Bowling
    145th
    Time Distance
    57th 223rd
    Tongue-twisters
    408th 1,108th 17th 449th
    United States
    188th 454th
    Vampire Numbers
    89th 117th 55th481st
    Van Eck Sequence
    763rd 636th 1,002nd 213th 651st
    Zodiac Signs
    58th 405th
    γ
    84th 214th
    λ
    86th 120th 135th 219th188th 251st546th
    π
    337th 128th856th
    τ
    249th 150th717th
    φ
    735th 1,067th126th 13th789th
    √2
    765th 1,191st183rd 391st979th
    𝑒
    868th 751st 919th 467th 509th710th