Kolakoski Sequence in all languages 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 641st MichalMarsalek 🇨🇿 794 84 117ms 6 Jan 2023 642nd emgordon154 793 67 2ms 22 Apr 2025 643rd clockworknazo 792 83 17ms 26 Sep 2022 644th MeWhenI 🇻🇦 791 83 3ms 10 Sep 2022 645th Salutations45 790 59 11ms 9 Jan 2025 646th MeWhenI 🇻🇦 790 63 154ms 16 Nov 2022 647th ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 647th AlephSquirrel 789 19 2ms 8 Nov 2025 649th SirBogman 🇺🇸 788 91 38ms 3 Jun 2025 650th kkoenig 788 109 342ms 5 Jan 2024 651st prplz 🇦🇺 787 46 237ms 24 Jan 2021 651st TimCurwick 🇺🇸 787 46 217ms 26 Jan 2021 651st SirBogman 🇺🇸 787 46 219ms 2 Feb 2024 654th Shanethegamer 🇺🇸 785 76 387ms 13 Dec 2021 654th Yax42 🇫🇷 785 76 424ms 5 May 2025 656th Yewzir 🇧🇪 785 82 119ms 28 Mar 2024 657th nwellnhof 🇩🇪 783 38 167ms 21 Oct 2021 658th Waffle3z 782 54 38ms 19 Jan 2021 658th olivermrose 🇺🇸 782 54 35ms 28 Sep 2021 658th KatieLG 🇬🇧 782 54 39ms 9 Jan 2023 658th Andriamanitra 🇫🇮 782 54 37ms 20 Jul 2023 662nd apourchot 782 63 21ms 13 Feb 2021 662nd neihousaigaai 782 63 11ms 10 Apr 2021 662nd lechevalier 782 63 12ms 9 Aug 2021 662nd commandz0 🇺🇸 782 63 14ms 19 Sep 2022 662nd fourth-bit 782 63 12ms 21 Nov 2022 662nd FortuiteMan 🇫🇷 782 63 27ms 8 Sep 2023 662nd ssbhatt4321 782 63 27ms 14 Oct 2023 662nd dokutan 782 63 19ms 1 Apr 2025 670th GrayJoKing 🇦🇺 782 68 2ms 21 Jan 2021 670th m-tkach 🇺🇦 782 68 2ms 25 Apr 2022 670th MeWhenI 🇻🇦 782 68 2ms 11 Nov 2022 673rd janbehrens 🇩🇪 782 91 59ms 20 Nov 2022 673rd snyderek 🇺🇸 782 91 56ms 21 Nov 2024 673rd dokutan 782 91 58ms 18 Jul 2025 676th MeWhenI 🇻🇦 781 88 457ms 28 Feb 2022 677th Shanethegamer 🇺🇸 780 106 33ms 20 Jan 2025 678th anter69 🇭🇺 777 59 1,306ms 24 Feb 2023 678th SirBogman 🇺🇸 777 59 1,208ms 10 Jun 2024 680th rak1507 🇬🇧 777 60 11ms 20 Jan 2021 680th Shanethegamer 🇺🇸 777 60 10ms 26 Sep 2021 680th duckyluuk 🇳🇱 777 60 10ms 4 Oct 2024 683rd ovs-code 🇩🇪 776 142 11ms 31 Mar 2023 684th commandz0 🇺🇸 775 62 523ms 15 Jan 2024 684th HumanoidCPU 775 62 434ms 3 Jun 2024 684th dokutan 775 62 498ms 14 Feb 2026 687th scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 688th GrayJoKing 🇦🇺 773 55 149ms 6 Aug 2024 689th mousetail 🇳🇱 773 98 123ms 3 Oct 2024 690th Shanethegamer 🇺🇸 772 89 468ms 26 Jul 2023 691st MeWhenI 🇻🇦 771 89 95ms 25 Dec 2022 692nd NewDefectus 🇮🇱 770 24 4ms 25 Oct 2021 693rd MeWhenI 🇻🇦 770 47 247ms 28 Jan 2023 694th RDShah 770 64 12ms 17 Jan 2021 694th andre-lameirinhas 🇵🇹 770 64 11ms 22 Feb 2021 694th stertooy 🇧🇪 770 64 12ms 10 Jun 2024 694th Terobero 770 64 21ms 6 Sep 2024 694th moustave 770 64 12ms 5 May 2025 694th Code-Coder-coder 770 64 13ms 25 Nov 2025 694th Lv0Sys 🇵🇱 770 64 13ms 4 Dec 2025 701st LostSyntax21 🇬🇧 768 55 36ms 2 Oct 2024 702nd lynn 767 78 152ms 16 Nov 2021 703rd retrohun 766 63 102ms 23 Jan 2023 704th Shanethegamer 🇺🇸 766 65 147ms 22 May 2021 705th MeWhenI 🇻🇦 766 108 27ms 7 Jun 2023 706th SirBogman 🇺🇸 765 31 45ms 7 Oct 2022 707th Shanethegamer 🇺🇸 765 93 57ms 12 Jan 2022 708th Shanethegamer 🇺🇸 764 60 346ms 2 Jul 2021 708th alemelis 764 60 2,055ms 14 Aug 2024 710th Waffle3z 764 61 10ms 20 Jan 2021 710th didion0 🇺🇸 764 61 12ms 9 Feb 2021 710th KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 710th tayloia 🇬🇧 764 61 10ms 29 May 2022 714th DialFrost 🇸🇬 764 86 5ms 10 Oct 2023 715th albanian-laundromat 🇺🇸 763 60 1,006ms 1 Oct 2025 716th kcinnu 🇱🇹 762 146 1,731ms 17 May 2024 717th SirBogman 🇺🇸 760 86 115ms 24 Jan 2021 717th strout 760 86 124ms 15 Dec 2023 719th c0d3-4-F00d 🇩🇪 759 70 2ms 18 Mar 2022 719th Alex-x90 🇺🇸 759 70 2ms 6 Mar 2023 First Prev 641–720 of 1,996 Next Last