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 641st SirBogman 🇺🇸 786 91 38ms 3 Jun 2025 642nd Shanethegamer 🇺🇸 784 76 417ms 13 Dec 2021 642nd Yax42 🇫🇷 784 76 409ms 5 May 2025 644th Yewzir 🇧🇪 784 82 113ms 28 Mar 2024 645th nwellnhof 🇩🇪 782 38 133ms 21 Oct 2021 646th apourchot 782 63 27ms 13 Feb 2021 646th neihousaigaai 782 63 11ms 10 Apr 2021 646th lechevalier 782 63 11ms 9 Aug 2021 646th commandz0 🇺🇸 782 63 13ms 19 Sep 2022 646th fourth-bit 782 63 12ms 21 Nov 2022 646th FortuiteMan 🇫🇷 782 63 38ms 8 Sep 2023 646th ssbhatt4321 782 63 27ms 14 Oct 2023 646th dokutan 782 63 18ms 1 Apr 2025 654th janbehrens 🇩🇪 782 91 57ms 20 Nov 2022 654th snyderek 🇺🇸 782 91 53ms 21 Nov 2024 654th dokutan 782 91 55ms 18 Jul 2025 657th Waffle3z 781 54 37ms 19 Jan 2021 657th olivermrose 🇺🇸 781 54 37ms 28 Sep 2021 657th KatieLG 🇬🇧 781 54 37ms 9 Jan 2023 657th Andriamanitra 🇫🇮 781 54 38ms 20 Jul 2023 661st GrayJoKing 🇦🇺 781 68 2ms 21 Jan 2021 661st m-tkach 🇺🇦 781 68 5ms 25 Apr 2022 661st MeWhenI 🇻🇦 781 68 2ms 11 Nov 2022 664th MeWhenI 🇻🇦 779 88 457ms 28 Feb 2022 665th Shanethegamer 🇺🇸 778 106 33ms 20 Jan 2025 666th rak1507 🇬🇧 777 60 10ms 20 Jan 2021 666th Shanethegamer 🇺🇸 777 60 10ms 26 Sep 2021 666th duckyluuk 🇳🇱 777 60 10ms 4 Oct 2024 669th anter69 🇭🇺 776 59 1,306ms 24 Feb 2023 669th SirBogman 🇺🇸 776 59 1,208ms 10 Jun 2024 671st commandz0 🇺🇸 775 62 417ms 15 Jan 2024 671st HumanoidCPU 775 62 409ms 3 Jun 2024 671st dokutan 775 62 379ms 29 hours ago 674th scpchicken 🇵🇼 774 48 3ms 15 Dec 2022 675th ovs-code 🇩🇪 774 142 12ms 31 Mar 2023 676th GrayJoKing 🇦🇺 771 55 147ms 6 Aug 2024 677th Shanethegamer 🇺🇸 771 89 473ms 26 Jul 2023 678th mousetail 🇳🇱 771 98 123ms 3 Oct 2024 679th NewDefectus 🇮🇱 770 24 4ms 25 Oct 2021 680th MeWhenI 🇻🇦 770 47 262ms 28 Jan 2023 681st RDShah 770 64 12ms 17 Jan 2021 681st andre-lameirinhas 🇵🇹 770 64 11ms 22 Feb 2021 681st stertooy 🇧🇪 770 64 11ms 10 Jun 2024 681st Terobero 770 64 22ms 6 Sep 2024 681st moustave 770 64 12ms 5 May 2025 681st Code-Coder-coder 770 64 11ms 25 Nov 2025 681st Lv0Sys 🇵🇱 770 64 11ms 4 Dec 2025 688th LostSyntax21 🇬🇧 767 55 51ms 2 Oct 2024 689th MeWhenI 🇻🇦 767 89 103ms 25 Dec 2022 690th retrohun 765 63 102ms 23 Jan 2023 691st Shanethegamer 🇺🇸 765 65 105ms 22 May 2021 692nd lynn 765 78 150ms 16 Nov 2021 693rd Shanethegamer 🇺🇸 765 93 57ms 12 Jan 2022 694th Waffle3z 764 61 9ms 20 Jan 2021 694th didion0 🇺🇸 764 61 10ms 9 Feb 2021 694th KrausRaus 🇺🇸 764 61 11ms 19 Feb 2021 694th tayloia 🇬🇧 764 61 10ms 29 May 2022 698th MeWhenI 🇻🇦 764 108 27ms 7 Jun 2023 699th SirBogman 🇺🇸 763 31 51ms 7 Oct 2022 700th Shanethegamer 🇺🇸 763 60 349ms 2 Jul 2021 700th alemelis 763 60 2,055ms 14 Aug 2024 702nd DialFrost 🇸🇬 762 86 5ms 10 Oct 2023 703rd albanian-laundromat 761 60 1,556ms 1 Oct 2025 704th kcinnu 🇱🇹 760 146 1,731ms 17 May 2024 705th c0d3-4-F00d 🇩🇪 759 70 2ms 18 Mar 2022 705th Alex-x90 🇺🇸 759 70 2ms 6 Mar 2023 705th dokutan 759 70 5ms 18 Jul 2025 708th SirBogman 🇺🇸 759 86 115ms 24 Jan 2021 708th strout 759 86 124ms 15 Dec 2023 710th TobyBoyne 🇬🇧 758 65 13ms 21 Jan 2021 710th 77Tigers 758 65 34ms 1 Mar 2021 710th knutae 🇳🇴 758 65 10ms 29 Jun 2021 710th ehulinsky 🇺🇸 758 65 15ms 10 Nov 2021 710th guilhem-roy 🇫🇷 758 65 12ms 28 Feb 2022 710th martinnorling 🇸🇪 758 65 11ms 8 Mar 2022 710th IshanPanpaliya 758 65 11ms 3 May 2023 710th nooberitess 758 65 12ms 8 Apr 2025 718th GolfingSuccess 🇬🇷 758 71 6ms 16 Oct 2023 718th Yewzir 🇧🇪 758 71 3ms 19 Nov 2025 720th duckyluuk 🇳🇱 756 73 8ms 16 Dec 2024 First Prev 641–720 of 1,900 Next Last