The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 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 481st roguh 🇬🇹 584 170 12ms 15 Jan 2024 481st KatieLG 🇬🇧 584 170 177ms 22 Oct 2025 483rd MeWhenI 🇻🇦 582 149 571ms 24 May 2024 484th targrik 580 138 14ms 31 hours ago 485th Bubbler-4 580 187 73ms 13 Sep 2023 486th MathisBullinger 579 151 11ms 31 Dec 2022 487th Shanethegamer 🇺🇸 578 137 3ms 24 Dec 2022 488th Shanethegamer 🇺🇸 577 149 2,832ms 28 Oct 2024 489th annaproxy 577 168 2ms 18 May 2023 490th frosster 🇨🇦 576 184 3ms 26 Jan 2026 491st CallanMcNulty 575 152 12ms 22 Jun 2023 492nd CatsAreFluffy 574 169 1ms 25 Jan 2023 493rd Natanaelel 🇸🇪 573 214 121ms 5 May 2025 494th Ripick 572 183 374ms 22 Jun 2025 495th Protothor 571 153 11ms 27 days ago 496th jacobly0 🇺🇸 571 253 1,693ms 22 Apr 2024 497th za3k 570 174 12ms 31 Dec 2022 498th jkelly467 569 151 2,779ms 11 Feb 2026 499th MichalMarsalek 🇨🇿 569 184 369ms 22 Feb 2024 500th madex 🇩🇪 567 171 2ms 5 Mar 2024 501st mossprescott 567 175 13ms 15 Jan 2023 502nd MeWhenI 🇻🇦 566 213 127ms 22 Dec 2022 503rd didion0 🇺🇸 564 155 12ms 6 Feb 2023 503rd unfinishedprogram 564 155 10ms 12 Jul 2023 505th adamnielson42 🇺🇸 564 176 11ms 25 Apr 2023 506th roguh 🇬🇹 562 176 4ms 25 Jan 2024 507th neihousaigaai 561 177 11ms 28 May 2025 508th JohandeRuiter 🇳🇱 560 173 2ms 9 Feb 2025 509th CatsAreFluffy 558 178 12ms 2 Sep 2024 510th emgordon154 555 156 161ms 4 Nov 2024 511th MeWhenI 🇻🇦 555 169 152ms 7 hours ago 512th cmayer777 554 175 2ms 4 Jan 2023 513th blaztoma 🇱🇹 554 523 17ms 30 Dec 2025 514th florton 553 158 12ms 10 Jan 2023 515th jeff-at-tamer-dot-codes 🇺🇸 551 180 19ms 15 Mar 2023 515th Bmrl7 551 180 10ms 26 Dec 2025 517th neel11235813 548 158 617ms 13 Mar 2024 518th janbehrens 🇩🇪 547 139 282ms 15 May 2023 519th MeWhenI 🇻🇦 543 161 12ms 21 Aug 2023 520th revlayle 🇺🇸 542 168 445ms 9 Jun 2023 521st MeWhenI 🇻🇦 542 193 373ms 27 Jul 2024 522nd roguh 🇬🇹 542 207 161ms 27 Jan 2024 523rd janbehrens 🇩🇪 541 148 7ms 15 May 2023 524th Herbert00709 🇵🇱 540 219 460ms 8 May 2024 525th sultan 539 169 364ms 28 Mar 2024 526th b10011 🇫🇮 539 184 13ms 16 Jan 2023 526th quimey 539 184 17ms 9 Jun 2023 528th blaztoma 🇱🇹 537 209 114ms 27 Nov 2025 529th emgordon154 536 146 1,212ms 25 Nov 2024 530th medzes 536 163 11ms 23 Jul 2023 531st MeWhenI 🇻🇦 535 131 425ms 28 Jan 2023 531st Shanethegamer 🇺🇸 535 131 317ms 18 Oct 2024 533rd roguh 🇬🇹 535 162 608ms 23 Jan 2024 534th SB-945 534 186 10ms 13 Jan 2024 535th janbehrens 🇩🇪 534 191 456ms 11 May 2023 536th sultan 532 246 443ms 28 Mar 2024 537th MeWhenI 🇻🇦 531 166 9ms 16 Aug 2024 538th janbehrens 🇩🇪 531 197 385ms 15 May 2023 539th LordSir101 530 165 10ms 4 Nov 2025 540th galloj 🇨🇿 528 188 14ms 24 Feb 2023 541st Haksell 🇦🇶 526 131 35ms 22 Feb 2023 542nd simon-thornton_pace 525 189 19ms 3 Aug 2023 543rd Mandrzejy 🇵🇱 525 225 457ms 12 May 2024 544th ericlangedijk 🇸🇮 523 174 422ms 19 May 2023 545th SniperSmiley 🇺🇸 520 191 18ms 28 Dec 2022 546th weeble 519 170 43ms 21 Dec 2024 547th commandz0 🇺🇸 517 192 11ms 25 Dec 2022 548th jgbaldwinbrown 516 188 2ms 9 Feb 2026 549th janbehrens 🇩🇪 515 254 399ms 11 May 2023 550th itljan30 514 193 17ms 28 Jan 2025 551st Waterperry 513 189 2ms 23 Nov 2023 552nd moustave 512 194 11ms 28 Nov 2024 553rd Florian-Mt 509 195 18ms 12 Jul 2024 554th KatieLG 🇬🇧 509 376 476ms 25 days ago 555th andersk 🇺🇸 508 266 208ms 22 Dec 2022 556th guilhem-roy 🇫🇷 506 196 16ms 6 Feb 2023 557th DialFrost 🇸🇬 505 173 12ms 10 Feb 2023 558th dtaylor0 504 197 20ms 25 Dec 2022 558th msbranicky 504 197 17ms 27 Jul 2023 558th sciencedjinn 504 197 11ms 8 Nov 2024 First Prev 481–560 of 858 Next Last