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 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 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 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 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 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 800th Anonymousellama21 714 69 12ms 15 May 2022 800th TaserTheFox 🇺🇸 714 69 38ms 16 Feb 2023 800th Jacob385 714 69 43ms 22 Apr 2024 804th emgordon154 712 80 2,291ms 9 Aug 2025 805th MeWhenI 🇻🇦 711 90 1,429ms 14 Jun 2023 806th marcin7Cd 710 103 21ms 12 Feb 2021 807th Feniske 🇫🇷 709 51 270ms 21 Nov 2023 808th CaedenHarper 🇨🇦 709 84 435ms 17 Oct 2025 809th aadenboy 🇺🇸 709 86 2ms 16 Dec 2025 810th chordowl 709 92 116ms 17 Mar 2021 811th rucin93 🇵🇱 707 60 136ms 9 Aug 2024 812th omurakazuaki 🇯🇵 706 66 10ms 18 Feb 2021 812th BambooleanLogic 🇸🇪 706 66 9ms 22 Aug 2022 812th coreynash 706 66 10ms 21 Oct 2023 812th two-bad 🇬🇧 706 66 10ms 24 Nov 2023 812th dylanarmstrong 706 66 10ms 15 Jan 2024 812th madeforlosers 706 66 9ms 5 Nov 2025 818th Stockoh 🇫🇷 706 68 427ms 24 Jun 2024 818th JunkIce 706 68 442ms 3 Dec 2024 820th typeswitch-dev 🇵🇹 705 74 8ms 7 Aug 2023 821st antimon2 🇯🇵 704 65 495ms 19 Jan 2021 821st msbranicky 704 65 1,289ms 12 Sep 2023 823rd osmith93 704 70 25ms 14 Jun 2021 823rd ridingqwerty 🇺🇸 704 70 12ms 23 Feb 2024 823rd mbittner20 704 70 11ms 15 Jul 2024 823rd RaBa21 🇭🇺 704 70 12ms 18 Jul 2025 827th Shanethegamer 🇺🇸 704 91 39ms 16 Jun 2022 828th Herbert00709 🇵🇱 704 101 60ms 19 Nov 2024 829th SnowballSH 703 60 36ms 12 Feb 2021 829th aksyristos 703 60 41ms 28 Feb 2023 829th Lv0Sys 🇵🇱 703 60 37ms 4 Dec 2025 832nd primo-ppcg 🇹🇭 702 47 1,032ms 5 Feb 2022 833rd MeWhenI 🇻🇦 702 238 12ms 29 Aug 2023 834th UnderKoen 🇳🇱 700 134 13ms 20 Jan 2025 835th jared-hughes 699 44 6ms 31 Jul 2022 836th NewDefectus 🇮🇱 699 76 2ms 25 Oct 2021 836th JohandeRuiter 🇳🇱 699 76 2ms 3 Dec 2023 838th Shanethegamer 🇺🇸 699 77 13ms 9 Oct 2023 839th targrik 698 123 305ms 10 Jul 2025 840th jared-hughes 698 159 1,670ms 16 Sep 2025 841st AlephSquirrel 697 34 49ms 30 Dec 2022 842nd targrik 696 57 5ms 26 Aug 2025 843rd neihousaigaai 696 67 10ms 10 Apr 2021 844th Jacob385 696 69 436ms 22 Apr 2024 845th SnowballSH 694 71 11ms 12 Feb 2021 845th Andre3582 694 71 11ms 18 Mar 2021 845th PhysicDev 🇫🇷 694 71 10ms 20 May 2021 845th Alban-Boissard 694 71 12ms 10 Jun 2025 849th boxjelly 694 94 114ms 21 Jan 2021 849th YAJUE114514 694 94 133ms 24 Jul 2025 851st Espiobest 692 61 38ms 13 Feb 2021 851st DaCuteRaccoon 692 61 37ms 9 Dec 2022 853rd edsrzf 🇳🇿 692 91 21ms 21 Dec 2024 854th JGDoerrer 691 103 443ms 5 Jan 2022 854th tailorspy 691 103 63ms 29 Oct 2023 856th Shanethegamer 🇺🇸 690 106 17ms 4 Oct 2024 857th msbranicky 689 95 5ms 11 Aug 2023 858th NewDefectus 🇮🇱 688 32 34ms 20 Dec 2021 859th GolfingSuccess 🇬🇷 688 69 33ms 17 Aug 2024 860th Andriamanitra 🇫🇮 687 95 148ms 20 Jul 2023 861st KasperKivimaeki 🇫🇮 687 125 299ms 3 Oct 2025 862nd msbranicky 685 89 2ms 26 Sep 2023 863rd LeeCamp 684 72 10ms 16 Feb 2022 863rd LukasFolwarczny 🇨🇿 684 72 10ms 16 Sep 2022 863rd CutSandstone 684 72 38ms 8 Jul 2024 866th Shanethegamer 🇺🇸 680 126 24ms 8 Jul 2021 867th dokutan 678 59 3ms 18 Jul 2025 868th jared-hughes 677 35 44ms 31 Jul 2022 868th Natanaelel 🇸🇪 677 35 51ms 18 Aug 2022 870th Yewzir 🇧🇪 677 88 421ms 14 Oct 2023 871st SirBogman 🇺🇸 676 44 214ms 22 Oct 2021 872nd richard-oelze 🇩🇪 675 73 30ms 4 Apr 2021 872nd mauro-1 🇮🇹 675 73 9ms 18 Aug 2021 872nd gchenfc 675 73 9ms 24 Jan 2022 872nd hiichbindermax 675 73 11ms 26 Feb 2022 872nd Omega65536 🇩🇪 675 73 11ms 24 Nov 2022 872nd sandorstormen 675 73 11ms 18 Feb 2023 872nd Mr-McChicken 675 73 10ms 15 Oct 2023 872nd Masttest 675 73 10ms 21 Feb 2024 880th dokutan 675 99 372ms 24 Sep 2025 First Prev 801–880 of 1,912 Next Last