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

    MichalMarsalek (he/him) 🇨🇿

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    104 / 123 Holes

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    11 Holes Authored

    12 Days of Christmas
    3,819th 1,938th 3,203rd 1,358th95th 2,988th 3,276th
    24 Game
    640th 593rd 527th
    99 Bottles of Beer
    3,710th 3,445th 556th
    Abundant Numbers
    3,713th 3,608th 3,009th1,012th
    Abundant Numbers (Long)
    2,176th 2,177th 425th
    Arabic to Roman
    1,360th 766th
    Arithmetic Numbers
    1,683rd 391st 1,624th 491st 160th
    Arrows
    Ascending Primes
    1,028th 450th 451st
    ASCII Table
    1,263rd 1,139th 2,073rd 399th 1,125th
    brainfuck
    575th
    Catalan Numbers
    1,659th 1,820th 1,029th 944th
    Catalan’s Constant
    731st 1,030th 603rd
    Christmas Trees
    292nd 1,907th 1,039th 2,892nd 410th163rd 931st
    Collatz
    3,124th 473rd 1,709th 2,967th 281st 605th
    CSS Colors
    1,218th 1st 553rd
    Cubes
    857th 250th 1,165th 74th 223rd
    Day of Week
    1,030th 1,237th 527th 1,278th883rd
    DFA Simulator
    173rd 262nd 153rd 80th
    Diamonds
    573rd 726th 2,033rd 220th 643rd
    Divisors
    5,107th 2,217th 5,254th 1,031st 28th
    Emirp Numbers
    1,538th 1,075th 948th 1,017th 1,233rd
    Emirp Numbers (Long)
    1,265th 549th 1,186th 581st 650th
    Emojify
    851st
    Evil Numbers
    3,781st 4,387th 2,273rd 1,406th
    Evil Numbers (Long)
    2,409th 2,295th 1,124th 774th
    Factorial Factorisation
    765th 1,287th 294th 1,141st
    Farey Sequence
    663rd 529th
    Fibonacci
    8,783rd4,585th4,196th 3,265th6,935th7,577th5,994th5,918th525th3,336th6,061st6,566th 1,234th 6,362nd
    Fizz Buzz
    12,975th 12,955th 5,588th 5,961st
    Foo Fizz Buzz Bar
    3,112th 3,222nd 1,450th
    Forsyth–Edwards Notation
    215th 291st
    Fractions
    1,087th 525th 859th
    Game of Life
    477th
    Gijswijt’s Sequence
    733rd 686th 536th
    Happy Numbers
    2,103rd 1,051st 1,577th
    Happy Numbers (Long)
    1,703rd 1,531st 709th 1,272nd
    Hexdump
    280th
    Intersection
    537th
    Inventory Sequence
    1,274th 1,129th 654th 623rd
    ISBN
    1,405th 637th 724th
    Jacobi Symbol
    424th 443rd
    Kolakoski Constant
    1,478th 598th 654th
    Kolakoski Sequence
    1,376th 1,402nd 635th 1,024th
    Leap Years
    4,298th 1,013th 3,212th 2,702nd1,943rd 626th
    Levenshtein Distance
    349th
    Leyland Numbers
    1,273rd 1,244th
    ln 2
    965th 1,201st 765th
    Look and Say
    1,757th 1,385th 790th
    Lucky Numbers
    1,110th 1,003rd 371st 610th
    Lucky Tickets
    453rd
    Mandelbrot
    768th
    Maze
    347th
    Medal Tally
    398th 285th 272nd
    Morse Decoder
    Morse Encoder
    494th
    Musical Chords
    258th 317th
    N Queens
    264th 266th
    Niven Numbers
    3,304th 796th 3,234th 1,905th539th 641st
    Niven Numbers (Long)
    2,088th 2,008th 1,107th 1,322nd
    Number Spiral
    1,294th 961st 544th
    Odious Numbers
    3,265th 3,588th 2,779th1,954th 1,434th
    Odious Numbers (Long)
    2,201st 2,060th 780th 724th
    Ordinal Numbers
    1,557th 1,772nd 608th 1,084th
    Pangram Grep
    717th
    Pascal’s Triangle
    2,545th 2,832nd 431st 1,255th
    Pernicious Numbers
    2,533rd 2,545th 1,830th 1,734th
    Pernicious Numbers (Long)
    1,528th 1,361st 590th
    Poker
    361st
    Polyominoes
    527th 230th 454th
    Prime Numbers
    3,742nd 4,699th 595th 697th
    Prime Numbers (Long)
    2,659th 2,664th 1,133rd 2,060th
    Proximity Grid
    362nd
    QR Decoder
    306th
    Quine
    2,121st 3,062nd 741st
    Recamán
    1,590th 1,476th 215th 523rd
    Repeating Decimals
    263rd
    Reverse Polish Notation
    573rd 617th
    Reversi
    404th
    Rijndael S-box
    1,198th 554th 797th
    Rock-paper-scissors-Spock-lizard
    274th
    Roman to Arabic
    702nd 541st
    Rule 110
    1,487th 1,400th 372nd
    Seven Segment
    344th
    SI Units
    145th 282nd 127th 171st
    Sierpiński Triangle
    1,716th 1,625th 284th 765th
    Smith Numbers
    939th 844th 326th 460th
    Spelling Numbers
    244th 233rd 627th
    Star Wars Opening Crawl
    119th
    Sudoku
    52nd
    Sudoku (Fill-in)
    186th
    Ten-pin Bowling
    393rd
    Time Distance
    168th 50th 180th
    Tongue-twisters
    1,869th 597th 369th 594th
    Transpose Sentence
    339th 515th 80th
    United States
    Vampire Numbers
    791st 526th 149th 437th
    Van Eck Sequence
    1,357th 1,225th 341st 824th
    Zodiac Signs
    151st 268th
    γ
    468th 1,072nd 377th
    λ
    1,141st 597th 104th 365th
    π
    3,707th1,817th2,619th2,356th2,246th 2,705th 3,309th3,769th2,165th1,411th 2,653rd 2,127th 3,571st3,666th
    τ
    1,172nd 1,637th 995th
    φ
    1,640th 1,828th 1,166th 473rd
    √2
    1,976th 1,868th 1,358th 492nd
    𝑒
    1,813th 2,291st 1,366th 2,208th