Kolakoski Constant 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 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 Calendar 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 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 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 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 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 Calendar 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 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 451st dokutan 507 242 208ms 1 Jul 2025 452nd RaBa21 🇭🇺 506 115 21ms 1 Aug 2025 453rd CatsAreFluffy 504 116 461ms 15 Jan 2024 453rd JunkIce 504 116 417ms 7 Mar 2025 453rd snoozingnewt 🇺🇸 504 116 647ms 28 Sep 2025 456th petroselo 501 116 10ms 16 Nov 2021 456th amollberg 🇸🇪 501 116 23ms 30 Jan 2022 456th CatsAreFluffy 501 116 13ms 10 Jan 2023 456th JunkIce 501 116 18ms 7 Mar 2025 456th snoozingnewt 🇺🇸 501 116 18ms 31 Mar 2025 456th robin-scragg 501 116 71ms 21 Oct 2025 462nd dokutan 501 226 7ms 11 Jan 2024 463rd tomh1012 500 227 405ms 18 Sep 2025 464th cros107 🇦🇺 493 118 47ms 16 Sep 2025 465th CaedenHarper 🇨🇦 491 128 822ms 9 Sep 2025 466th knutae 🇳🇴 485 120 10ms 29 Jun 2021 467th two-bad 🇬🇧 485 141 916ms 25 Feb 2024 468th m-tkach 🇺🇦 485 222 2ms 17 Dec 2022 468th Yewzir 🇧🇪 485 222 2ms 22 Dec 2023 470th Waffle3z 484 101 64ms 17 Jan 2021 471st Yewzir 🇧🇪 482 362 1,659ms 17 days ago 472nd yzhs 🇩🇪 481 180 159ms 24 Jul 2021 473rd frosster 480 250 2ms 13 Mar 2025 474th guilhem-roy 🇫🇷 477 122 11ms 28 Feb 2022 474th inverseLorentz 🇦🇺 477 122 102ms 24 Oct 2023 476th alemelis 473 125 2,181ms 14 Aug 2024 477th dokutan 471 229 2ms 1 May 2024 478th neihousaigaai 470 275 428ms 5 Jan 2022 479th Yewzir 🇧🇪 469 242 350ms 11 Feb 2024 480th jared-hughes 466 233 1,972ms 17 Jul 2022 481st LukasFolwarczny 🇨🇿 462 126 12ms 16 Sep 2022 482nd osmith93 458 127 61ms 10 Jul 2022 483rd Shanethegamer 🇺🇸 457 248 351ms 12 Dec 2021 484th eranws 456 150 44ms 2 Nov 2022 485th janbehrens 🇩🇪 455 150 388ms 3 Dec 2023 486th dokutan 455 249 335ms 21 Aug 2024 487th adamnielson42 🇺🇸 453 93 22ms 20 Nov 2023 488th LucaArgentiUCF 🇮🇹 448 294 115ms 28 Jan 2021 489th yokasuretsu 447 130 31ms 13 Jan 2025 489th WillowWispy 447 130 13ms 16 Mar 2025 491st NickTheEASDude 🇺🇸 444 131 179ms 20 Aug 2024 492nd h3ra993huskp 🇯🇵 444 291 525ms 45 hours ago 493rd FortuiteMan 🇫🇷 441 132 2,279ms 21 Jul 2025 494th MeWhenI 🇻🇦 440 399 30ms 10 Jul 2021 495th dokutan 438 231 1,267ms 23 Aug 2024 496th Shanethegamer 🇺🇸 437 113 217ms 4 Dec 2022 497th jacekwladzinski 437 133 11ms 9 Oct 2025 498th dokutan 437 219 2,782ms 23 Oct 2024 499th hiddicop 🇸🇪 436 112 77ms 29 Jan 2021 500th jacobly0 🇺🇸 436 275 2ms 21 Sep 2023 501st glesnick 431 135 168ms 18 Aug 2022 502nd madex 🇩🇪 431 250 43ms 27 Oct 2024 503rd boxjelly 430 201 147ms 26 Jan 2021 504th MeWhenI 🇻🇦 428 223 43ms 3 Sep 2024 505th dokutan 422 226 40ms 24 Aug 2024 506th Pyroan 421 138 98ms 14 May 2025 506th InigoK 🇺🇸 421 138 32ms 25 Aug 2025 508th michelebastione 🇮🇹 418 139 69ms 10 Apr 2021 508th cubed-guy 418 139 24ms 2 Nov 2022 510th dokutan 417 218 6ms 5 May 2024 511th MeWhenI 🇻🇦 416 209 72ms 13 Dec 2022 512th SniperSmiley 🇺🇸 415 140 96ms 30 Jun 2022 512th StefanHabel 🇨🇦 415 140 67ms 21 Apr 2024 514th RYNO8 410 142 14ms 4 Sep 2021 515th Yewzir 🇧🇪 410 203 70ms 9 Mar 2024 516th MeWhenI 🇻🇦 408 724 9ms 28 Nov 2023 517th albanian-laundromat 404 333 986ms 8 Sep 2025 518th Yewzir 🇧🇪 403 207 75ms 7 Jul 2023 519th m-tkach 🇺🇦 401 145 115ms 19 Sep 2021 520th dokutan 400 425 33ms 7 hours ago 521st neihousaigaai 398 146 19ms 8 Apr 2021 521st AGoyet 398 146 25ms 29 Jun 2022 523rd Yewzir 🇧🇪 397 210 996ms 18 Feb 2024 524th RDShah 396 147 179ms 19 Jan 2021 525th dokutan 392 445 1,523ms 21 Oct 2025 First Prev 451–525 of 1,670 Next Last