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 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 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 ArkScript 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 ArkScript 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 Calendar 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 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 636th FortuiteMan 🇫🇷 782 63 24ms 8 Sep 2023 636th ssbhatt4321 782 63 26ms 14 Oct 2023 636th dokutan 782 63 17ms 1 Apr 2025 644th Waffle3z 781 54 37ms 19 Jan 2021 644th olivermrose 🇺🇸 781 54 37ms 28 Sep 2021 644th KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 644th Andriamanitra 🇫🇮 781 54 38ms 20 Jul 2023 648th GrayJoKing 🇦🇺 781 68 2ms 21 Jan 2021 648th m-tkach 🇺🇦 781 68 5ms 25 Apr 2022 648th MeWhenI 🇻🇦 781 68 2ms 11 Nov 2022 651st janbehrens 🇩🇪 781 91 57ms 20 Nov 2022 651st snyderek 🇺🇸 781 91 53ms 21 Nov 2024 651st dokutan 781 91 55ms 18 Jul 2025 654th DialFrost 🇸🇬 780 142 1,630ms 13 Sep 2025 655th MeWhenI 🇻🇦 779 88 416ms 28 Feb 2022 656th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 657th rak1507 🇬🇧 777 60 10ms 20 Jan 2021 657th Shanethegamer 🇺🇸 777 60 9ms 26 Sep 2021 657th duckyluuk 🇳🇱 777 60 10ms 4 Oct 2024 660th anter69 🇭🇺 776 59 1,243ms 24 Feb 2023 660th SirBogman 🇺🇸 776 59 1,298ms 10 Jun 2024 662nd scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 663rd commandblockguy 🇺🇸 774 62 450ms 15 Jan 2024 663rd HumanoidCPU 774 62 401ms 3 Jun 2024 665th ovs-code 🇩🇪 774 142 12ms 31 Mar 2023 666th GrayJoKing 🇦🇺 771 55 135ms 6 Aug 2024 667th Shanethegamer 🇺🇸 771 89 457ms 26 Jul 2023 668th mousetail 🇳🇱 771 98 116ms 3 Oct 2024 669th NewDefectus 🇮🇱 770 24 4ms 25 Oct 2021 670th MeWhenI 🇻🇦 770 47 262ms 28 Jan 2023 671st RDShah 770 64 10ms 17 Jan 2021 671st andre-lameirinhas 🇵🇹 770 64 10ms 22 Feb 2021 671st stertooy 🇧🇪 770 64 10ms 10 Jun 2024 671st Terobero 770 64 20ms 6 Sep 2024 671st moustave 770 64 11ms 5 May 2025 671st Code-Coder-coder 770 64 11ms 25 Nov 2025 671st Lv0Sys 🇵🇱 770 64 10ms 4 Dec 2025 678th LostSyntax21 🇬🇧 767 55 51ms 2 Oct 2024 679th MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 680th retrohun 765 63 102ms 23 Jan 2023 681st Shanethegamer 🇺🇸 765 65 105ms 22 May 2021 682nd lynn 765 78 150ms 16 Nov 2021 683rd Waffle3z 764 61 9ms 20 Jan 2021 683rd didion0 🇺🇸 764 61 10ms 9 Feb 2021 683rd KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 683rd tayloia 🇬🇧 764 61 10ms 29 May 2022 687th Shanethegamer 🇺🇸 764 93 57ms 12 Jan 2022 688th MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 689th SirBogman 🇺🇸 763 31 51ms 7 Oct 2022 690th Shanethegamer 🇺🇸 763 60 352ms 2 Jul 2021 690th alemelis 763 60 1,936ms 14 Aug 2024 692nd dokutan 762 63 430ms 1 Apr 2025 693rd DialFrost 🇸🇬 762 86 5ms 10 Oct 2023 694th albanian-laundromat 759 60 718ms 1 Oct 2025 695th c0d3-4-F00d 🇩🇪 759 70 2ms 18 Mar 2022 695th Alex-x90 🇺🇸 759 70 2ms 6 Mar 2023 695th dokutan 759 70 5ms 18 Jul 2025 698th SirBogman 🇺🇸 759 86 115ms 24 Jan 2021 698th strout 759 86 124ms 15 Dec 2023 700th TobyBoyne 🇬🇧 758 65 10ms 21 Jan 2021 700th 77Tigers 758 65 30ms 1 Mar 2021 700th knutae 🇳🇴 758 65 10ms 29 Jun 2021 700th ehulinsky 🇺🇸 758 65 13ms 10 Nov 2021 700th guilhem-roy 🇫🇷 758 65 10ms 28 Feb 2022 700th martinnorling 🇸🇪 758 65 10ms 8 Mar 2022 700th IshanPanpaliya 758 65 10ms 3 May 2023 700th nooberitess 758 65 11ms 8 Apr 2025 708th GolfingSuccess 🇬🇷 758 71 6ms 16 Oct 2023 708th Yewzir 🇧🇪 758 71 3ms 19 Nov 2025 710th kcinnu 🇱🇹 758 146 1,731ms 17 May 2024 711th duckyluuk 🇳🇱 756 73 8ms 16 Dec 2024 712th Shanethegamer 🇺🇸 754 63 4ms 13 Aug 2024 712th emgordon154 754 63 4ms 25 Aug 2024 714th ovs-code 🇩🇪 754 87 106ms 8 Mar 2024 715th lynn 753 85 1,383ms 12 Sep 2021 716th ScottHamper 752 62 10ms 1 Jun 2021 716th helbling 🇨🇭 752 62 10ms 2 Oct 2024 718th RockOfStone 752 81 3ms 4 Nov 2021 718th dokutan 752 81 2ms 18 Jul 2025 720th Mabeloid 🇳🇴 750 64 409ms 17 Sep 2024 First Prev 641–720 of 1,883 Next Last