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 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 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 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 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 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 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 641st prplz 🇦🇺 786 46 248ms 24 Jan 2021 641st TimCurwick 🇺🇸 786 46 238ms 26 Jan 2021 641st SirBogman 🇺🇸 786 46 254ms 2 Feb 2024 644th SirBogman 🇺🇸 786 91 38ms 3 Jun 2025 645th Shanethegamer 🇺🇸 784 76 408ms 13 Dec 2021 645th Yax42 🇫🇷 784 76 409ms 5 May 2025 647th Yewzir 🇧🇪 784 82 111ms 28 Mar 2024 648th nwellnhof 🇩🇪 782 38 133ms 21 Oct 2021 649th apourchot 782 63 18ms 13 Feb 2021 649th neihousaigaai 782 63 10ms 10 Apr 2021 649th lechevalier 782 63 10ms 9 Aug 2021 649th commandz0 🇺🇸 782 63 13ms 19 Sep 2022 649th fourth-bit 782 63 11ms 21 Nov 2022 649th FortuiteMan 🇫🇷 782 63 31ms 8 Sep 2023 649th ssbhatt4321 782 63 27ms 14 Oct 2023 649th dokutan 782 63 18ms 1 Apr 2025 657th janbehrens 🇩🇪 782 91 57ms 20 Nov 2022 657th snyderek 🇺🇸 782 91 53ms 21 Nov 2024 657th dokutan 782 91 55ms 18 Jul 2025 660th Waffle3z 781 54 37ms 19 Jan 2021 660th olivermrose 🇺🇸 781 54 37ms 28 Sep 2021 660th KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 660th Andriamanitra 🇫🇮 781 54 38ms 20 Jul 2023 664th GrayJoKing 🇦🇺 781 68 2ms 21 Jan 2021 664th m-tkach 🇺🇦 781 68 2ms 25 Apr 2022 664th MeWhenI 🇻🇦 781 68 2ms 11 Nov 2022 667th MeWhenI 🇻🇦 779 88 457ms 28 Feb 2022 668th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 669th rak1507 🇬🇧 777 60 12ms 20 Jan 2021 669th Shanethegamer 🇺🇸 777 60 11ms 26 Sep 2021 669th duckyluuk 🇳🇱 777 60 9ms 4 Oct 2024 672nd anter69 🇭🇺 776 59 1,306ms 24 Feb 2023 672nd SirBogman 🇺🇸 776 59 1,208ms 10 Jun 2024 674th commandz0 🇺🇸 775 62 417ms 15 Jan 2024 674th HumanoidCPU 775 62 409ms 3 Jun 2024 674th dokutan 775 62 379ms 7 days ago 677th scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 678th ovs-code 🇩🇪 774 142 11ms 31 Mar 2023 679th GrayJoKing 🇦🇺 771 55 136ms 6 Aug 2024 680th Shanethegamer 🇺🇸 771 89 468ms 26 Jul 2023 681st mousetail 🇳🇱 771 98 121ms 3 Oct 2024 682nd NewDefectus 🇮🇱 770 24 4ms 25 Oct 2021 683rd MeWhenI 🇻🇦 770 47 231ms 28 Jan 2023 684th RDShah 770 64 11ms 17 Jan 2021 684th andre-lameirinhas 🇵🇹 770 64 11ms 22 Feb 2021 684th stertooy 🇧🇪 770 64 11ms 10 Jun 2024 684th Terobero 770 64 20ms 6 Sep 2024 684th moustave 770 64 12ms 5 May 2025 684th Code-Coder-coder 770 64 11ms 25 Nov 2025 684th Lv0Sys 🇵🇱 770 64 11ms 4 Dec 2025 691st LostSyntax21 🇬🇧 767 55 40ms 2 Oct 2024 692nd MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 693rd retrohun 765 63 102ms 23 Jan 2023 694th Shanethegamer 🇺🇸 765 65 105ms 22 May 2021 695th lynn 765 78 151ms 16 Nov 2021 696th Shanethegamer 🇺🇸 765 93 57ms 12 Jan 2022 697th Waffle3z 764 61 10ms 20 Jan 2021 697th didion0 🇺🇸 764 61 11ms 9 Feb 2021 697th KrausRaus 🇺🇸 764 61 10ms 19 Feb 2021 697th tayloia 🇬🇧 764 61 10ms 29 May 2022 701st MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 702nd SirBogman 🇺🇸 763 31 51ms 7 Oct 2022 703rd Shanethegamer 🇺🇸 763 60 346ms 2 Jul 2021 703rd alemelis 763 60 2,055ms 14 Aug 2024 705th DialFrost 🇸🇬 762 86 5ms 10 Oct 2023 706th albanian-laundromat 761 60 1,139ms 1 Oct 2025 707th kcinnu 🇱🇹 760 146 1,731ms 17 May 2024 708th c0d3-4-F00d 🇩🇪 759 70 2ms 18 Mar 2022 708th Alex-x90 🇺🇸 759 70 2ms 6 Mar 2023 708th dokutan 759 70 2ms 18 Jul 2025 711th SirBogman 🇺🇸 759 86 115ms 24 Jan 2021 711th strout 759 86 124ms 15 Dec 2023 713th TobyBoyne 🇬🇧 758 65 11ms 21 Jan 2021 713th 77Tigers 758 65 32ms 1 Mar 2021 713th knutae 🇳🇴 758 65 10ms 29 Jun 2021 713th ehulinsky 🇺🇸 758 65 13ms 10 Nov 2021 713th guilhem-roy 🇫🇷 758 65 12ms 28 Feb 2022 713th martinnorling 🇸🇪 758 65 10ms 8 Mar 2022 713th IshanPanpaliya 758 65 11ms 3 May 2023 713th nooberitess 758 65 12ms 8 Apr 2025 First Prev 641–720 of 1,902 Next Last