The Calendar hole will go live in approximately 5 days. Why not try and solve it ahead of time?
12 Days of Christmas in JavaScript in chars. 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 Chars Time Submitted 161st dacoconutchemist 457 477 8ms 29 May 2024 161st tomavc 457 477 8ms 23 Jun 2025 163rd ollyspooner 455 479 8ms 22 Sep 2023 163rd Ralac07 🇦🇺 455 479 9ms 18 Apr 2025 163rd amazingalek 455 479 9ms 4 hours ago 166th LoLoLucky 454 480 9ms 7 Dec 2020 167th anders-nom 453 481 8ms 15 Jan 2020 168th mcapodici 452 482 8ms 10 Aug 2020 168th piano-miles 452 482 8ms 12 Mar 2023 170th predyy 451 483 8ms 29 Jun 2022 170th lewdev 🇺🇸 451 483 9ms 12 Feb 2023 170th SiddharthShyniben 451 483 9ms 1 Dec 2024 173rd matiasbontempo 450 484 8ms 9 Sep 2022 173rd Quadruplay 450 484 8ms 20 Dec 2024 175th gunnermanx 449 485 9ms 25 Jan 2019 175th chloeching-amino 449 485 8ms 24 May 2020 175th revlayle 🇺🇸 449 485 8ms 16 Feb 2021 175th CubeyTheCube 449 485 8ms 9 Aug 2022 175th johnkiernander 449 485 9ms 16 days ago 175th Nemikolh 🇫🇷 449 485 9ms 2 days ago 181st KaeruCT 449 486 9ms 2 Dec 2020 181st fitzdotlol 🇺🇸 449 486 9ms 20 Mar 2022 181st Larento 449 486 9ms 14 Oct 2023 184th NatNgs 448 487 8ms 8 Jan 2020 184th mcculloughjchris 448 487 8ms 31 Oct 2022 184th madex 🇩🇪 448 487 9ms 19 Dec 2024 187th dzshn 447 488 9ms 14 Apr 2021 187th vlad-ushakov 447 488 9ms 22 Mar 2023 189th josh18994 445 490 9ms 8 Dec 2021 190th 21Joakim 444 491 9ms 30 Mar 2021 190th maxpelic 🇺🇸 444 491 8ms 8 Jul 2022 190th acollett89 444 491 8ms 18 Jun 2025 193rd gnlow 🇰🇷 443 492 9ms 17 Apr 2020 194th KY246 440 495 9ms 12 Jun 2021 194th liamstrilchuk 440 495 9ms 10 Sep 2021 194th vjohannesb 440 495 9ms 23 Dec 2023 197th oitio 440 496 9ms 10 Feb 2020 197th alcoholick-dev 440 496 8ms 26 Apr 2021 197th CutOffFrequency 440 496 9ms 31 Oct 2022 197th Lv0Sys 🇵🇱 440 496 9ms 29 May 2025 201st Michiocre 439 497 9ms 20 Feb 2024 201st tcql 🇺🇸 439 497 9ms 21 Apr 2024 203rd modellking 438 498 8ms 3 Jun 2020 204th leon-w 437 499 8ms 12 Oct 2018 204th vang1ong7ang 437 499 8ms 28 Oct 2021 204th unfinishedprogram 437 499 8ms 12 Dec 2023 207th adam-chalmers 436 500 9ms 5 Oct 2024 208th igmcdowell 435 501 8ms 3 Jan 2022 209th apokryfos 434 502 9ms 4 Aug 2023 210th skps2010 433 504 9ms 2 Jan 2019 210th EricUmakoshi 433 504 9ms 31 Aug 2024 210th deancureton 433 504 9ms 30 Dec 2024 213th MJKWoolnough 432 505 9ms 10 Aug 2022 213th JRaspass 🇬🇧 432 505 8ms 11 Oct 2022 213th eranws 432 505 9ms 23 Oct 2022 213th marcus-gomes-v 🇧🇷 432 505 8ms 23 Feb 2025 217th OmegaB0t 431 506 9ms 5 Dec 2019 217th dijs 431 506 9ms 8 Dec 2019 217th BloodStormKnight 431 506 8ms 16 Oct 2022 217th dev-Thae 431 506 9ms 6 Nov 2023 217th kydogia 431 506 9ms 28 Mar 2024 222nd TRexOnGit 430 507 9ms 15 Jan 2024 223rd chris-munn 429 508 9ms 30 Nov 2023 224th matthewproskils 428 509 8ms 8 Sep 2020 224th ShiraJoseph 🇺🇸 428 509 9ms 21 Jul 2023 226th boxjelly 427 510 8ms 13 Feb 2021 226th aaronze 🇦🇺 427 510 8ms 24 Apr 2021 228th konpikwastaken 427 511 9ms 6 Sep 2021 228th ricardonunesdev 427 511 8ms 24 Nov 2023 228th TheDongle 427 511 9ms 30 Apr 2024 231st Nuottajarvi 426 512 9ms 10 Aug 2018 231st bitnimble 426 512 9ms 21 Oct 2021 231st iczelia 🇩🇪 426 512 9ms 14 Oct 2025 234th ian-odonnell 425 513 9ms 12 Mar 2018 234th i-machine 425 513 8ms 28 Aug 2020 234th wansacis 🇩🇪 425 513 9ms 11 Nov 2021 237th avartanii 423 515 9ms 17 Jan 2021 237th E2dgar 423 515 9ms 29 Jan 2022 237th gajdosp2 423 515 9ms 27 Jun 2022 240th TheRandomTroll 422 516 8ms 20 Oct 2020 First Prev 161–240 of 404 Next Last
