The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Game of Life in all languages in bytes. 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 401st cakular 653 152 10ms 16 May 2024 401st retrohun 653 152 16ms 25 Nov 2025 403rd MeWhenI 🇻🇦 651 152 4ms 15 Oct 2023 404th MeWhenI 🇻🇦 650 117 340ms 15 Feb 2023 405th inventshah 650 149 2ms 28 Jan 2023 406th albanian-laundromat 649 199 95ms 11 Dec 2025 407th Andrey-Plotnikov 647 135 11ms 15 Jun 2025 408th elgan65536 🇺🇸 647 209 171ms 6 Jul 2024 409th rucin93 🇵🇱 646 134 153ms 31 Oct 2024 410th MeWhenI 🇻🇦 646 150 2ms 25 Dec 2022 411th MeWhenI 🇻🇦 645 143 5ms 23 May 2023 412th snyderek 🇺🇸 642 184 62ms 27 Nov 2024 413th ScottHamper 641 142 359ms 5 Apr 2023 414th Shanethegamer 🇺🇸 641 178 1,393ms 18 Oct 2024 415th janbehrens 🇩🇪 640 155 19ms 17 Jun 2023 416th blaztoma 🇱🇹 640 193 155ms 29 Dec 2025 417th CaedenHarper 🇨🇦 639 105 1,333ms 30 Sep 2025 418th blaztoma 🇱🇹 638 108 37ms 30 Dec 2025 419th olleicua 🇺🇸 638 137 12ms 15 Jan 2024 420th FlorianCassayre 🇫🇷 636 156 21ms 18 Oct 2023 421st mousetail 🇳🇱 635 213 165ms 5 Apr 2024 422nd blaztoma 🇱🇹 633 103 4ms 18 Oct 2025 423rd Salutations45 633 138 10ms 11 Nov 2024 424th OllieBoyne 🇬🇧 632 157 10ms 24 Dec 2022 424th Alex-x90 🇺🇸 632 157 34ms 2 Jun 2024 426th MateuszPietrzak 🇵🇱 632 187 442ms 8 Dec 2023 427th tobeannouncd 632 194 159ms 9 Jan 2024 428th jatloe 628 158 19ms 29 Oct 2024 428th andrewjc2000 628 158 20ms 12 Aug 2025 428th qpwoeirut 628 158 11ms 2 Oct 2025 431st jared-hughes 625 147 104ms 17 Feb 2023 432nd anter69 🇭🇺 624 159 10ms 28 Dec 2022 433rd MeWhenI 🇻🇦 623 232 1,662ms 7 Nov 2025 434th MeWhenI 🇻🇦 621 217 283ms 9 Feb 2023 435th KrausRaus 🇺🇸 620 141 11ms 26 Dec 2022 435th itserasmus 620 141 11ms 17 Jan 2024 437th Pyroan 620 160 18ms 5 Jan 2026 438th dokutan 619 140 542ms 16 days ago 439th MeWhenI 🇻🇦 619 225 27ms 6 Jun 2023 440th rak1507 🇬🇧 618 78 33ms 28 Jan 2023 440th ashtraypettingzoo 🇺🇸 618 78 33ms 23 Feb 2023 442nd betaveros 616 161 10ms 30 Dec 2022 442nd Chara-0x 616 161 10ms 18 Sep 2025 444th CatsAreFluffy 616 192 65ms 22 Dec 2022 445th MeWhenI 🇻🇦 614 182 15ms 13 Dec 2023 446th Natanaelel 🇸🇪 613 62 2ms 11 Feb 2023 447th elgan65536 🇺🇸 613 158 2ms 6 Jul 2024 448th thehylian 613 162 10ms 29 Dec 2022 448th inventshah 613 162 13ms 4 Jan 2023 450th Shanethegamer 🇺🇸 612 171 374ms 24 Dec 2022 451st Shanethegamer 🇺🇸 612 173 2ms 24 Dec 2022 452nd MeWhenI 🇻🇦 612 189 3ms 25 Dec 2022 453rd CaedenHarper 🇨🇦 612 220 314ms 20 Nov 2025 454th snoozingnewt 🇨🇦 611 202 123ms 20 Nov 2025 455th jumelet 🇳🇱 609 163 11ms 2 Jan 2023 455th InigoK 🇺🇸 609 163 18ms 25 Aug 2025 457th targrik 607 144 11ms 12 May 2025 458th retrohun 607 156 93ms 22 Dec 2022 459th typeswitch-dev 🇵🇹 607 213 3ms 23 Jul 2023 460th MeWhenI 🇻🇦 604 71 58ms 29 Dec 2025 461st MeWhenI 🇻🇦 604 251 41ms 3 Sep 2024 462nd StefanHabel 🇨🇦 601 165 11ms 25 days ago 463rd CedricGebistorf 598 166 11ms 4 May 2023 463rd ahmetdemirag 🇨🇾 598 166 121ms 6 Feb 2025 465th janbehrens 🇩🇪 597 154 186ms 11 May 2023 466th CaedenHarper 🇨🇦 595 153 412ms 16 Oct 2025 467th nyoshe 595 163 2ms 22 Jan 2025 468th nstearns96 🇬🇧 594 167 11ms 22 Jan 2023 468th neel11235813 594 167 11ms 1 Nov 2023 468th maxgodfrey2004 🇨🇦 594 167 20ms 5 Jan 2025 471st ovs-code 🇩🇪 594 218 19ms 27 Sep 2024 472nd roguh 🇬🇹 593 214 96ms 26 Jan 2024 473rd kmathis22 592 221 474ms 6 Dec 2025 474th LuisGoncalves05 🇵🇹 591 168 17ms 13 Jul 2025 474th te-chnical 591 168 16ms 17 Jan 2026 476th Florian-Mt 590 148 13ms 27 Oct 2023 477th mtirado1 588 180 2ms 22 Dec 2022 478th SirBogman 🇺🇸 587 111 35ms 18 Aug 2025 479th voytxt 🇨🇿 586 149 11ms 19 May 2023 480th cmayer777 585 202 67ms 4 Jan 2023 First Prev 401–480 of 859 Next Last