The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
12 Days of Christmas in Python in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 559th mathieurodic 812 511 16ms 21 Oct 2025 562nd haydenridd 811 512 9ms 1 Jul 2020 562nd xkacer 🇨🇿 811 512 15ms 1 Feb 2021 562nd krcs 🇵🇱 811 512 10ms 25 Dec 2021 562nd r-benson 🇬🇧 811 512 9ms 3 Apr 2023 562nd ffelixm 811 512 10ms 22 May 2025 567th PFischbeck 809 513 9ms 11 Dec 2017 567th wilkij1 809 513 9ms 11 Jun 2018 567th NoKGamer 809 513 9ms 6 Jul 2021 567th Mikey-Beep 🇬🇧 809 513 9ms 9 Oct 2022 567th yishayv 809 513 9ms 22 Jan 2023 567th aalec 809 513 16ms 25 Apr 2024 567th ginop 809 513 9ms 3 Jul 2024 567th hamilton-bonds 809 513 9ms 29 Aug 2024 567th benjibon 809 513 9ms 11 Sep 2024 567th nulzo 809 513 9ms 17 Oct 2025 577th Deepztream 807 514 9ms 2 Sep 2018 577th Mojken 807 514 9ms 2 Sep 2018 577th fepe55 807 514 9ms 8 Oct 2018 577th Oscujic 807 514 9ms 10 Nov 2019 577th Malin001 807 514 10ms 3 Jan 2020 577th dtaylor0 807 514 9ms 25 Dec 2022 577th mrmena 🇦🇺 807 514 9ms 19 Mar 2024 577th LostSyntax21 🇬🇧 807 514 9ms 9 Dec 2024 577th Babafaba 807 514 10ms 29 Oct 2025 586th DarkTemplar5 806 515 9ms 19 Feb 2020 586th TheYMI 806 515 9ms 19 May 2020 586th winny- 806 515 9ms 28 Aug 2020 586th rollix 806 515 12ms 11 Dec 2021 586th QuantumNovice 806 515 9ms 3 Sep 2023 586th j3mak 806 515 10ms 19 Jan 2024 592nd colinnewell 804 516 9ms 22 Dec 2017 592nd AgathokakologicalBit 804 516 10ms 25 Jul 2019 592nd katmh 804 516 12ms 31 Jan 2021 592nd jcrutle 804 516 10ms 11 Oct 2022 592nd Rythoka 804 516 10ms 17 Oct 2022 592nd VictorFordham 804 516 10ms 19 Dec 2023 598th 0xDeadcell 803 517 12ms 22 Aug 2020 598th CameronGBell 803 517 9ms 31 Oct 2022 598th b10011 🇫🇮 803 517 16ms 26 Dec 2022 598th M450NCH00 803 517 9ms 4 Feb 2023 598th resoNathan 803 517 9ms 8 Jul 2024 598th IoLimmer 803 517 10ms 11 Jul 2024 598th Brokames 803 517 11ms 6 Jun 2025 605th Daniel-Martin576 801 518 9ms 1 Apr 2020 605th andrewgopher 801 518 9ms 28 Jul 2021 605th dlee888 801 518 10ms 17 Nov 2023 608th GodEmperorCaterpie 800 519 10ms 5 Sep 2019 608th lemogne 800 519 9ms 9 Aug 2021 608th ToE42 800 519 10ms 7 Sep 2021 608th VilBoub 800 519 10ms 16 Apr 2022 608th 104210 800 519 10ms 9 Nov 2022 608th tmanternach 800 519 12ms 23 Nov 2022 608th marcus-gomes-v 🇧🇷 800 519 10ms 23 Feb 2025 608th bradye31 800 519 9ms 20 Nov 2025 608th kayaulai 800 519 9ms 23 Nov 2025 617th Stockoh 🇫🇷 798 520 9ms 11 May 2021 617th Kasci 798 520 10ms 28 Dec 2021 617th RJFuller 798 520 13ms 13 Dec 2023 617th azure-blondon 798 520 9ms 25 Dec 2023 617th joao-parreira 798 520 29ms 24 Apr 2024 617th kejcao 🇨🇦 798 520 16ms 10 May 2024 617th Florian-Mt 798 520 9ms 20 days ago 624th mothcolada 🇺🇸 797 521 9ms 11 Mar 2021 624th nikhil9302 797 521 9ms 21 Nov 2021 624th LeeCamp 797 521 10ms 11 Dec 2021 624th jhpaques 🇫🇷 797 521 10ms 28 Dec 2022 624th WillConker 797 521 10ms 14 Jul 2023 629th HemangRajvanshy 795 522 9ms 1 Apr 2020 629th nmgetahun 795 522 9ms 5 Dec 2022 629th pde-bakk 🇳🇱 795 522 9ms 21 Oct 2023 629th raflemakt 795 522 9ms 3 Jan 2024 629th codingisgreatbutiamnot 795 522 12ms 29 Jul 2024 629th Kowalskiexe 🇵🇱 795 522 9ms 19 Apr 2025 635th nickrodgers42 793 523 9ms 2 Oct 2020 635th piebot3000 793 523 9ms 13 Sep 2023 635th IdkWhatIsIdk 793 523 9ms 28 Oct 2024 635th OyuDays 793 523 9ms 17 Mar 2025 639th gardarjuto 792 524 9ms 16 Nov 2020 639th xy3 🇮🇪 792 524 9ms 4 Jan 2022 First Prev 561–640 of 1,130 Next 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