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

    alphafalfa

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    IT guy with exploratory nerding.

    67 / 123 Holes

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    14 / 62 Langs

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    31 / 98 Cheevos

    📅

    12 Days of Christmas
    6th
    99 Bottles of Beer
    10th
    Abundant Numbers
    15th 32nd
    Abundant Numbers (Long)
    14th 21st
    Arabic to Roman
    6th
    Arithmetic Numbers
    16th
    Arrows
    3rd
    Ascending Primes
    7th
    ASCII Table
    14th
    Billiards
    4th
    Card Number Validation
    7th
    Catalan Numbers
    7th 23rd
    Catalan’s Constant
    7th
    Christmas Trees
    10th
    Collatz
    23rd 26th
    Cubes
    3rd
    Day of Week
    19th
    Diamonds
    9th
    Divisors
    12th
    Emirp Numbers
    11th 48th
    Emirp Numbers (Long)
    6th 19th
    Emojify
    6th
    Evil Numbers
    19th 53rd 47th
    Evil Numbers (Long)
    21st 47th 21st
    Factorial Factorisation
    11th
    Farey Sequence
    11th
    Fibonacci
    54th52nd 47th 129th
    Fizz Buzz
    17th32nd595th480th312th63rd54th61st60th38th212th42nd1,929th76th
    Foo Fizz Buzz Bar
    20th 23rd
    Fractions
    17th
    Happy Numbers
    19th 27th
    Happy Numbers (Long)
    16th 17th
    Intersection
    8th
    ISBN
    14th
    Jacobi Symbol
    7th
    Kolakoski Constant
    6th
    Leap Years
    21st 48th
    Lucky Numbers
    8th
    Morse Decoder
    4th
    Morse Encoder
    3rd
    Niven Numbers
    26th 43rd
    Niven Numbers (Long)
    15th 24th
    Number Spiral
    7th
    Odious Numbers
    21st 52nd 49th
    Odious Numbers (Long)
    21st 48th 21st
    Ordinal Numbers
    13th
    PalindromemordnilaP
    2nd
    Pangram Grep
    10th
    Pascal’s Triangle
    11th
    Pernicious Numbers
    27th 59th
    Pernicious Numbers (Long)
    10th 21st
    Prime Numbers
    17th 42nd 84th
    Prime Numbers (Long)
    11th 41st 33rd
    Quine
    56th
    Recamán
    13th
    Rijndael S-box
    4th
    Roman to Arabic
    8th
    Rule 110
    5th
    Seven Segment
    6th
    Sierpiński Triangle
    8th
    Spelling Numbers
    6th
    Ten-pin Bowling
    5th
    Tongue-twisters
    4th
    Transpose Sentence
    9th
    United States
    Vampire Numbers
    4th
    π
    9th 12th
    τ
    10th