The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Kolakoski Sequence 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 80th LukeBridges 🇬🇧 570 86 9ms 29 Nov 2024 80th Lv0Sys 🇵🇱 570 86 11ms 15 days ago 83rd alasdair-greenland 563 87 9ms 19 Nov 2021 84th msbranicky 544 90 9ms 9 Jan 2024 85th boxjelly 538 91 9ms 14 Feb 2021 85th 1231234md5 🇨🇳 538 91 10ms 29 Jan 2024 87th iczelia 🇩🇪 533 92 10ms 24 Oct 2025 88th randolchance 516 95 10ms 23 Jan 2023 88th acollett89 516 95 9ms 4 Aug 2025 88th alexsave 516 95 9ms 15 Nov 2025 91st Jesperb21 510 96 9ms 19 Aug 2021 92nd xyangst 505 97 9ms 18 Oct 2024 93rd Robvdhout 495 99 9ms 10 Apr 2025 94th RDShah 490 100 9ms 17 Jan 2021 94th ThibWillFulll 490 100 9ms 7 Jun 2022 96th JOrE20 🇺🇸 485 101 12ms 33 hours ago 97th Garklein 🇨🇦 476 103 10ms 7 Jan 2022 98th shaunjc 454 108 9ms 10 Jun 2021 99th eiburns 450 109 9ms 10 Jan 2022 99th Vaekor 450 109 9ms 3 Aug 2023 101st adamnielson42 🇺🇸 430 114 9ms 25 Apr 2023 102nd eranws 426 115 9ms 18 Oct 2022 103rd fitzdotlol 🇺🇸 412 119 9ms 29 Mar 2022 104th zakariamouhid 353 139 10ms 13 Jun 2023 105th FilipMyhren 322 152 9ms 18 Nov 2022 105th thisishowmymindworks 🇳🇴 322 152 9ms 2 Jul 2024 107th HumanoidCPU 316 155 10ms 26 Apr 2024 108th snoozingnewt 🇨🇦 314 156 10ms 5 Oct 2025 109th jmerle 🇳🇱 312 157 10ms 3 Jul 2023 110th akshatj27 🇦🇶 227 216 9ms 11 Jan 2022 111th StronkCheese 🇺🇸 225 218 9ms 7 Aug 2023 112th Omega65536 🇩🇪 209 235 9ms 17 Jan 2021 113th roguh 🇬🇹 196 250 9ms 13 Oct 2024 114th hacker112 🇸🇪 142 346 9ms 20 Jun 2024 115th pandapawskat 139 352 9ms 22 Sep 2021 116th dzshn 111 442 9ms 7 Apr 2021 117th gnlow 🇰🇷 57 865 9ms 27 Jan 2022 118th JRaspass 🇬🇧 24 2,006 8ms 16 Jan 2021 118th theunofficialcoder 24 2,006 9ms 13 Sep 2021 118th hacker19374 24 2,006 8ms 10 Mar 2023 118th gigaprofisi 🇺🇸 24 2,006 8ms 20 Jun 2025 122nd pbarath 24 2,008 8ms 7 Jun 2021 122nd mokymok 🇺🇸 24 2,008 9ms 10 Nov 2021 122nd KatieLG-Transpiler 🇬🇧 24 2,008 9ms 23 Jun 2022 122nd retrohun 24 2,008 9ms 27 Dec 2022 122nd Mabeloid 🇳🇴 24 2,008 9ms 21 Sep 2024 First Prev 81–126 of 126
