The Calendar hole will go live in approximately 6 hours. 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 549th ibixina 814 510 9ms 13 Oct 2024 549th kbeat 🇰🇿 814 510 10ms 6 Jun 2025 563rd egelmex 812 511 9ms 15 Nov 2019 563rd Nyandereian 812 511 16ms 15 Jul 2025 563rd mathieurodic 812 511 16ms 21 Oct 2025 566th haydenridd 811 512 9ms 1 Jul 2020 566th xkacer 🇨🇿 811 512 15ms 1 Feb 2021 566th krcs 🇵🇱 811 512 10ms 25 Dec 2021 566th r-benson 🇬🇧 811 512 9ms 3 Apr 2023 566th ffelixm 811 512 10ms 22 May 2025 571st PFischbeck 809 513 9ms 11 Dec 2017 571st wilkij1 809 513 9ms 11 Jun 2018 571st NoKGamer 809 513 9ms 6 Jul 2021 571st Mikey-Beep 🇬🇧 809 513 9ms 9 Oct 2022 571st yishayv 809 513 9ms 22 Jan 2023 571st aalec 809 513 16ms 25 Apr 2024 571st ginop 809 513 9ms 3 Jul 2024 571st hamilton-bonds 809 513 9ms 29 Aug 2024 571st benjibon 809 513 9ms 11 Sep 2024 571st nulzo 809 513 9ms 17 Oct 2025 581st Deepztream 807 514 9ms 2 Sep 2018 581st Mojken 807 514 9ms 2 Sep 2018 581st fepe55 807 514 9ms 8 Oct 2018 581st Oscujic 807 514 9ms 10 Nov 2019 581st Malin001 807 514 10ms 3 Jan 2020 581st dtaylor0 807 514 9ms 25 Dec 2022 581st mrmena 🇦🇺 807 514 9ms 19 Mar 2024 581st LostSyntax21 🇬🇧 807 514 9ms 9 Dec 2024 581st Babafaba 807 514 10ms 29 Oct 2025 590th DarkTemplar5 806 515 9ms 19 Feb 2020 590th TheYMI 806 515 9ms 19 May 2020 590th winny- 806 515 9ms 28 Aug 2020 590th rollix 806 515 12ms 11 Dec 2021 590th QuantumNovice 806 515 9ms 3 Sep 2023 590th j3mak 806 515 10ms 19 Jan 2024 596th colinnewell 804 516 9ms 22 Dec 2017 596th AgathokakologicalBit 804 516 10ms 25 Jul 2019 596th katmh 804 516 12ms 31 Jan 2021 596th jcrutle 804 516 10ms 11 Oct 2022 596th Rythoka 804 516 10ms 17 Oct 2022 596th VictorFordham 804 516 10ms 19 Dec 2023 602nd 0xDeadcell 803 517 12ms 22 Aug 2020 602nd CameronGBell 803 517 9ms 31 Oct 2022 602nd b10011 🇫🇮 803 517 16ms 26 Dec 2022 602nd M450NCH00 803 517 9ms 4 Feb 2023 602nd resoNathan 803 517 9ms 8 Jul 2024 602nd IoLimmer 803 517 10ms 11 Jul 2024 602nd Brokames 803 517 11ms 6 Jun 2025 609th Daniel-Martin576 801 518 9ms 1 Apr 2020 609th andrewgopher 801 518 9ms 28 Jul 2021 609th dlee888 801 518 10ms 17 Nov 2023 612th GodEmperorCaterpie 800 519 10ms 5 Sep 2019 612th lemogne 800 519 9ms 9 Aug 2021 612th ToE42 800 519 10ms 7 Sep 2021 612th VilBoub 800 519 10ms 16 Apr 2022 612th 104210 800 519 10ms 9 Nov 2022 612th tmanternach 800 519 12ms 23 Nov 2022 612th marcus-gomes-v 🇧🇷 800 519 10ms 23 Feb 2025 612th bradye31 800 519 9ms 20 Nov 2025 612th kayaulai 800 519 9ms 23 Nov 2025 621st Stockoh 🇫🇷 798 520 9ms 11 May 2021 621st Kasci 798 520 10ms 28 Dec 2021 621st RJFuller 798 520 13ms 13 Dec 2023 621st azure-blondon 798 520 9ms 25 Dec 2023 621st joao-parreira 798 520 29ms 24 Apr 2024 621st kejcao 🇨🇦 798 520 16ms 10 May 2024 621st Florian-Mt 798 520 9ms 26 days ago 628th mothcolada 🇺🇸 797 521 9ms 11 Mar 2021 628th nikhil9302 797 521 9ms 21 Nov 2021 628th LeeCamp 797 521 10ms 11 Dec 2021 628th jhpaques 🇫🇷 797 521 10ms 28 Dec 2022 628th WillConker 797 521 10ms 14 Jul 2023 633rd HemangRajvanshy 795 522 9ms 1 Apr 2020 633rd nmgetahun 795 522 9ms 5 Dec 2022 633rd pde-bakk 🇳🇱 795 522 9ms 21 Oct 2023 633rd raflemakt 795 522 9ms 3 Jan 2024 633rd codingisgreatbutiamnot 795 522 12ms 29 Jul 2024 633rd Kowalskiexe 🇵🇱 795 522 9ms 19 Apr 2025 639th nickrodgers42 793 523 9ms 2 Oct 2020 639th piebot3000 793 523 9ms 13 Sep 2023 First Prev 561–640 of 1,137 Next 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