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 ><> 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 Lily 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 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 881st CaedenHarper 🇨🇦 666 70 10ms 31 Jan 2025 882nd jameslindesay 666 74 12ms 24 Feb 2021 882nd PkmnQ 666 74 43ms 5 May 2024 882nd RedzGoose 🇦🇺 666 74 11ms 14 Oct 2024 882nd yokasuretsu 666 74 12ms 13 Jan 2025 886th Natanaelel 🇸🇪 663 56 3ms 20 Jan 2024 887th MeWhenI 🇻🇦 663 69 312ms 15 Feb 2023 887th MarcMush 🇫🇷 663 69 304ms 12 Feb 2024 887th Yewzir 🇧🇪 663 69 404ms 5 Apr 2024 890th DialFrost 🇸🇬 663 75 110ms 3 Jun 2025 891st dokutan 662 69 1,041ms 30 Aug 2025 892nd 77Tigers 662 114 147ms 9 Apr 2024 893rd SirBogman 🇺🇸 659 108 58ms 3 Jan 2022 894th Trunksistor 🇫🇷 657 75 12ms 25 May 2022 894th celiendonze 🇨🇭 657 75 12ms 16 Jun 2023 894th qwjhvbxi 657 75 11ms 9 Feb 2024 894th wenbang24 657 75 14ms 6 Apr 2024 898th uttumuttu 🇫🇮 656 71 10ms 8 Jan 2022 898th olleicua 🇺🇸 656 71 9ms 20 Feb 2024 900th annaproxy 656 91 95ms 13 Jan 2023 901st AdrienHache 🇫🇷 655 91 429ms 31 Dec 2023 902nd emgordon154 653 65 144ms 6 Sep 2024 903rd albanian-laundromat 653 98 39ms 28 Nov 2025 904th olivermrose 🇺🇸 652 57 3ms 24 Aug 2021 905th boxjelly 649 65 41ms 11 Feb 2021 905th msbranicky 649 65 43ms 12 Sep 2023 907th Shanethegamer 🇺🇸 649 97 7ms 22 Dec 2023 908th jwhear 🇺🇸 649 171 1,847ms 1 Oct 2024 909th Waffle3z 648 76 14ms 20 Jan 2021 909th hellwue 648 76 12ms 16 Nov 2023 909th yuchuehw 648 76 17ms 18 Jan 2024 912th johnnythedoggie 644 106 104ms 3 Mar 2021 912th snoozingnewt 🇨🇦 644 106 90ms 21 Nov 2025 914th rboath 643 58 88ms 8 Jan 2025 915th emgordon154 643 98 10ms 10 Dec 2024 916th NickTheEASDude 🇺🇸 642 95 1ms 1 Jul 2024 917th msbranicky 641 134 295ms 3 Oct 2023 918th nephila-nacrea 🇬🇧 640 58 3ms 3 Feb 2021 919th f-tucker 640 77 11ms 2 Feb 2024 919th undefinedRyan 640 77 15ms 19 Apr 2025 919th Emutis 🇱🇹 640 77 14ms 12 Sep 2025 922nd alomiF 640 102 124ms 4 Nov 2024 923rd Bubbler-4 639 97 72ms 13 Sep 2023 924th Maznek 638 73 9ms 30 Jun 2023 925th MeWhenI 🇻🇦 637 82 10ms 21 Jul 2023 926th janbehrens 🇩🇪 636 135 288ms 13 Jun 2021 927th Shanethegamer 🇺🇸 635 57 247ms 27 Jul 2023 928th MateuszPietrzak 🇵🇱 635 112 56ms 16 Jan 2024 929th sreyfe 635 119 150ms 9 Jun 2024 930th dokutan 634 94 391ms 18 Jul 2025 931st DialFrost 🇸🇬 633 67 135ms 3 Aug 2024 932nd SirBogman 🇺🇸 633 84 2ms 14 Dec 2021 933rd MeWhenI 🇻🇦 633 90 2,346ms 24 Oct 2024 934th AkashTandon167 632 78 11ms 25 May 2021 934th jhpaques 🇫🇷 632 78 20ms 30 Nov 2022 936th emgordon154 632 186 1,416ms 30 May 2025 937th NewDefectus 🇮🇱 630 59 6ms 25 Oct 2021 938th janbehrens 🇩🇪 630 136 25ms 9 Jul 2021 939th Shanethegamer 🇺🇸 625 64 2ms 26 Jul 2023 940th twocatsinatrenchcoat 624 79 10ms 29 Mar 2022 940th SniperSmiley 🇺🇸 624 79 41ms 23 Jun 2022 940th Glinte 624 79 19ms 14 Dec 2023 940th Bmrl7 624 79 14ms 19 Mar 2024 944th MeWhenI 🇻🇦 624 101 12ms 9 May 2024 945th CaedenHarper 🇨🇦 624 107 529ms 6 Oct 2025 946th edsrzf 🇳🇿 622 138 299ms 21 Dec 2024 947th emgordon154 622 151 8ms 6 Oct 2024 948th janbehrens 🇩🇪 620 68 42ms 18 Jan 2021 949th ovs-code 🇩🇪 619 48 140ms 2 Jan 2024 950th Yewzir 🇧🇪 619 64 6ms 16 Nov 2023 951st MeWhenI 🇻🇦 619 106 345ms 26 Aug 2023 952nd AkashTandon167 618 86 2ms 25 May 2021 952nd solisolu 618 86 2ms 1 Jan 2026 954th dokutan 618 106 11ms 24 Mar 2025 955th bastienvoirin 🇫🇷 616 80 15ms 4 Feb 2021 955th argusdusty 🇺🇸 616 80 20ms 25 Mar 2021 955th OppositeShark 616 80 10ms 9 Apr 2022 955th WillowWispy 616 80 11ms 16 Mar 2025 959th Shanethegamer 🇺🇸 614 85 4ms 21 Dec 2024 960th codename68 614 123 149ms 13 Aug 2022 First Prev 881–960 of 1,900 Next Last