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 Dragon Curve 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 Dragon Curve 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 Shanethegamer 🇺🇸 796 108 326ms 26 Sep 2021 642nd cooljoseph1 795 62 24ms 6 May 2022 642nd nkoppel 795 62 16ms 19 Oct 2022 642nd AodhanDalton 795 62 13ms 4 Nov 2022 642nd nstearns96 🇬🇧 795 62 19ms 28 Nov 2022 642nd adamnielson42 🇺🇸 795 62 12ms 10 Jan 2024 642nd jbjd 795 62 11ms 2 Mar 2024 642nd HumanoidCPU 795 62 12ms 3 Jun 2024 642nd jacekwladzinski 795 62 13ms 4 Oct 2025 642nd Mabeloid 🇳🇴 795 62 12ms 26 Oct 2025 651st emgordon154 793 67 2ms 22 Apr 2025 652nd MeWhenI 🇻🇦 792 83 3ms 10 Sep 2022 652nd clockworknazo 792 83 17ms 26 Sep 2022 654th Salutations45 790 59 17ms 9 Jan 2025 655th MeWhenI 🇻🇦 790 63 154ms 16 Nov 2022 656th ashtraypettingzoo 🇺🇸 789 19 2ms 3 Apr 2023 656th AlephSquirrel 789 19 2ms 8 Nov 2025 658th emgordon154 789 105 110ms 4 Dec 2025 659th SirBogman 🇺🇸 788 91 38ms 3 Jun 2025 660th kkoenig 788 109 342ms 5 Jan 2024 661st prplz 🇦🇺 787 46 297ms 24 Jan 2021 661st TimCurwick 🇺🇸 787 46 258ms 26 Jan 2021 661st SirBogman 🇺🇸 787 46 284ms 2 Feb 2024 664th Shanethegamer 🇺🇸 785 76 393ms 13 Dec 2021 664th Yax42 🇫🇷 785 76 413ms 5 May 2025 666th Yewzir 🇧🇪 785 82 101ms 28 Mar 2024 667th nwellnhof 🇩🇪 783 38 167ms 21 Oct 2021 668th apourchot 783 63 21ms 13 Feb 2021 668th neihousaigaai 783 63 11ms 10 Apr 2021 668th lechevalier 783 63 12ms 9 Aug 2021 668th commandz0 🇺🇸 783 63 14ms 19 Sep 2022 668th fourth-bit 783 63 12ms 21 Nov 2022 668th FortuiteMan 🇫🇷 783 63 27ms 8 Sep 2023 668th ssbhatt4321 783 63 27ms 14 Oct 2023 668th dokutan 783 63 19ms 1 Apr 2025 676th janbehrens 🇩🇪 783 91 62ms 20 Nov 2022 676th snyderek 🇺🇸 783 91 54ms 21 Nov 2024 676th dokutan 783 91 63ms 18 Jul 2025 679th Waffle3z 782 54 39ms 19 Jan 2021 679th olivermrose 🇺🇸 782 54 40ms 28 Sep 2021 679th KatieLG 🇬🇧 782 54 39ms 9 Jan 2023 679th Andriamanitra 🇫🇮 782 54 40ms 20 Jul 2023 683rd GrayJoKing 🇦🇺 782 68 2ms 21 Jan 2021 683rd m-tkach 🇺🇦 782 68 2ms 25 Apr 2022 683rd MeWhenI 🇻🇦 782 68 2ms 11 Nov 2022 686th MeWhenI 🇻🇦 781 88 457ms 28 Feb 2022 687th vang1ong7ang 781 97 176ms 11 hours ago 688th Shanethegamer 🇺🇸 780 106 33ms 20 Jan 2025 689th anter69 🇭🇺 777 59 1,341ms 24 Feb 2023 689th SirBogman 🇺🇸 777 59 1,295ms 10 Jun 2024 691st rak1507 🇬🇧 777 60 10ms 20 Jan 2021 691st Shanethegamer 🇺🇸 777 60 11ms 26 Sep 2021 691st duckyluuk 🇳🇱 777 60 13ms 4 Oct 2024 694th ovs-code 🇩🇪 776 142 11ms 31 Mar 2023 695th commandz0 🇺🇸 775 62 523ms 15 Jan 2024 695th HumanoidCPU 775 62 434ms 3 Jun 2024 695th dokutan 775 62 498ms 14 Feb 2026 698th scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 699th GrayJoKing 🇦🇺 773 55 136ms 6 Aug 2024 700th mousetail 🇳🇱 773 98 122ms 3 Oct 2024 701st Shanethegamer 🇺🇸 772 89 468ms 26 Jul 2023 702nd MeWhenI 🇻🇦 771 89 102ms 25 Dec 2022 703rd NewDefectus 🇮🇱 770 24 4ms 25 Oct 2021 704th MeWhenI 🇻🇦 770 47 297ms 28 Jan 2023 705th RDShah 770 64 12ms 17 Jan 2021 705th andre-lameirinhas 🇵🇹 770 64 11ms 22 Feb 2021 705th stertooy 🇧🇪 770 64 12ms 10 Jun 2024 705th Terobero 770 64 21ms 6 Sep 2024 705th moustave 770 64 12ms 5 May 2025 705th Code-Coder-coder 770 64 13ms 25 Nov 2025 705th Lv0Sys 🇵🇱 770 64 13ms 4 Dec 2025 705th BrunoVisnadi 🇧🇷 770 64 26ms 13 days ago 713th LostSyntax21 🇬🇧 768 55 45ms 2 Oct 2024 714th lynn 767 78 152ms 16 Nov 2021 715th retrohun 766 63 114ms 23 Jan 2023 716th Shanethegamer 🇺🇸 766 65 147ms 22 May 2021 717th Shanethegamer 🇺🇸 766 93 56ms 12 Jan 2022 718th MeWhenI 🇻🇦 766 108 27ms 7 Jun 2023 719th SirBogman 🇺🇸 765 31 52ms 7 Oct 2022 720th Shanethegamer 🇺🇸 764 60 386ms 2 Jul 2021 First Prev 641–720 of 2,032 Next Last