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

    plcc0

    89,669
    91,537
    🥇42
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    🥉5

    108 / 123 Holes

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    45 / 62 Langs

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    58 / 98 Cheevos

    📅

    12 Days of Christmas
    7th 29th
    99 Bottles of Beer
    8th 13th
    Abundant Numbers
    54th
    Abundant Numbers (Long)
    159th
    Arabic to Roman
    48th 26th
    Arithmetic Numbers
    11th
    Arrows
    23rd
    Ascending Primes
    11th 58th
    ASCII Table
    14th 43rd
    Billiards
    15th
    brainfuck
    24th 16th
    Card Number Validation
    7th 29th
    Catalan Numbers
    85th
    Catalan’s Constant
    12th 16th
    Christmas Trees
    10th 33rd
    Collatz
    5th
    CSS Colors
    1st
    Cubes
    27th
    Day of Week
    28th 44th
    DFA Simulator
    14th
    Diamonds
    9th 11th 53rd
    Divisors
    14th 1st
    Emirp Numbers
    15th
    Emirp Numbers (Long)
    36th 7th
    Emojify
    38th
    Evil Numbers
    10th 1st 14th
    Evil Numbers (Long)
    38th
    Factorial Factorisation
    10th 27th 9th
    Farey Sequence
    29th
    Fibonacci
    71st29th42nd3rd18th 101st85th59th27th51st17th34th23rd31st 23rd102nd30th35th12th14th88th175th16th6th1st27th6th68th28th186th10th12th7th1st12th6th22nd1st9th25th11th
    Fizz Buzz
    5th 42nd
    Foo Fizz Buzz Bar
    19th
    Forsyth–Edwards Notation
    30th
    Fractions
    35th
    Game of Life
    19th
    Gijswijt’s Sequence
    36th
    Happy Numbers
    9th 49th
    Happy Numbers (Long)
    30th
    Hexdump
    36th
    Intersection
    25th
    Inventory Sequence
    8th
    ISBN
    4th 4th 40th
    Jacobi Symbol
    89th
    Kolakoski Sequence
    53rd
    Leap Years
    15th 54th
    Levenshtein Distance
    55th 6th
    Leyland Numbers
    66th
    ln 2
    1st
    Look and Say
    40th
    Lucky Numbers
    15th6th 74th
    Mandelbrot
    18th 17th
    Maze
    19th
    Medal Tally
    28th
    Minesweeper
    14th
    Morse Decoder
    28th
    Morse Encoder
    13th
    N Queens
    17th 11th
    Niven Numbers
    4th 75th
    Niven Numbers (Long)
    60th
    Number Spiral
    36th
    Odious Numbers
    1st
    Odious Numbers (Long)
    1st
    Ordinal Numbers
    47th
    PalindromemordnilaP
    24th
    Pangram Grep
    37th
    Partition Numbers
    6th 35th 15th
    Pascal’s Triangle
    38th
    Pernicious Numbers
    70th
    Pernicious Numbers (Long)
    1st
    Prime Numbers
    19th 14th 74th 1st 1st 11th
    Prime Numbers (Long)
    1st 187th 1st
    Quine
    1st 60th67th 33rd 61st29th 185th 72nd
    Recamán
    83rd
    Repeating Decimals
    67th
    Reverse Polish Notation
    1st 21st
    Rijndael S-box
    5th 9th 95th
    Rock-paper-scissors-Spock-lizard
    29th
    Roman to Arabic
    41st
    ROT13
    20th 29th
    Rule 110
    67th
    Scrambled Sort
    2nd 5th
    Set
    16th
    Seven Segment
    18th
    SI Units
    19th
    Sierpiński Triangle
    61st
    Smith Numbers
    51st 14th
    Spelling Numbers
    51st 3rd
    Star Wars GPT
    14th
    Sudoku (Fill-in)
    22nd
    Ten-pin Bowling
    28th
    Tic-tac-toe
    20th
    Time Distance
    18th
    Tongue-twisters
    6th 12th 10th 10th
    Topological Sort
    10th
    Tower of Hanoi
    60th
    Transpose Sentence
    1st 23rd
    Trinomial Triangle
    10th
    Vampire Numbers
    36th
    Van Eck Sequence
    7th 45th
    Zeckendorf Representation
    18th
    Zodiac Signs
    21st
    γ
    11th 4th 7th
    λ
    76th
    π
    12th 11th
    τ
    8th
    φ
    164th
    √2
    19th 1st
    𝑒
    1st