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 Python 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 80th ahmetdemirag 🇨🇾 620 166 121ms 6 Feb 2025 82nd nstearns96 🇬🇧 617 167 11ms 22 Jan 2023 82nd neel11235813 617 167 11ms 1 Nov 2023 82nd maxgodfrey2004 🇨🇦 617 167 20ms 5 Jan 2025 85th LuisGoncalves05 🇵🇹 613 168 17ms 13 Jul 2025 85th te-chnical 613 168 16ms 17 Jan 2026 87th roguh 🇬🇹 606 170 12ms 15 Jan 2024 87th KatieLG 🇬🇧 606 170 177ms 22 Oct 2025 89th za3k 592 174 12ms 31 Dec 2022 90th mossprescott 589 175 13ms 15 Jan 2023 91st adamnielson42 🇺🇸 585 176 11ms 25 Apr 2023 92nd neihousaigaai 582 177 11ms 28 May 2025 93rd CatsAreFluffy 579 178 12ms 2 Sep 2024 94th jeff-at-tamer-dot-codes 🇺🇸 572 180 19ms 15 Mar 2023 94th Bmrl7 572 180 10ms 26 Dec 2025 96th b10011 🇫🇮 560 184 13ms 16 Jan 2023 96th quimey 560 184 17ms 9 Jun 2023 98th SB-945 554 186 10ms 13 Jan 2024 99th galloj 🇨🇿 548 188 14ms 24 Feb 2023 100th simon-thornton_pace 545 189 19ms 3 Aug 2023 101st SniperSmiley 🇺🇸 539 191 18ms 28 Dec 2022 102nd commandz0 🇺🇸 536 192 11ms 25 Dec 2022 103rd itljan30 534 193 17ms 28 Jan 2025 104th moustave 531 194 11ms 28 Nov 2024 105th Florian-Mt 528 195 18ms 12 Jul 2024 106th guilhem-roy 🇫🇷 526 196 16ms 6 Feb 2023 107th dtaylor0 523 197 20ms 25 Dec 2022 107th msbranicky 523 197 17ms 27 Jul 2023 107th sciencedjinn 523 197 11ms 8 Nov 2024 110th thomasklunker 520 198 12ms 2 Feb 2023 110th RYNO8 520 198 19ms 11 Apr 2023 112th Matter1024 🇮🇳 518 199 17ms 18 Jan 2026 113th rsgray 512 201 11ms 22 Jan 2024 114th SirFireball3521 510 202 18ms 3 Mar 2023 114th Babafaba 510 202 26ms 17 Nov 2025 116th yzhs 🇩🇪 502 205 11ms 23 Jun 2023 117th Schreipfelerer 495 208 18ms 11 Sep 2024 118th DialFrost 🇸🇬 493 209 13ms 3 Aug 2024 119th Stockoh 🇫🇷 490 210 19ms 17 Nov 2024 120th YAJUE114514 486 212 10ms 12 Dec 2025 121st fynnkroeger 484 213 21ms 15 Apr 2023 122nd amollberg 🇸🇪 481 214 10ms 14 Jan 2024 122nd TheZwierzLF 🇵🇱 481 214 95ms 2 Jun 2025 124th knutae 🇳🇴 479 215 16ms 14 Nov 2023 125th skaravind 477 216 11ms 19 Jan 2026 126th ValentinCassayre 475 217 20ms 17 Oct 2023 126th piano-miles 475 217 12ms 6 Sep 2024 128th jmerle 🇳🇱 460 224 20ms 10 Jul 2023 128th luuumine 🇫🇷 460 224 1,733ms 27 Oct 2025 130th mbittner20 458 225 12ms 27 May 2023 130th smilesformiles3 458 225 20ms 14 Jun 2025 132nd tomh1012 456 226 18ms 25 Feb 2026 133rd jhpaques 🇫🇷 452 228 18ms 18 Jan 2023 133rd Wildst 452 228 11ms 7 Jul 2023 135th RandGuy 448 230 11ms 26 Jan 2024 136th MaxElf999 446 231 18ms 9 Jan 2023 136th kistlerf 🇨🇭 446 231 19ms 19 May 2025 138th jacekwladzinski 442 233 17ms 4 Oct 2025 139th FortuiteMan 🇫🇷 440 234 11ms 16 Oct 2024 140th dranjohn 435 237 19ms 16 Sep 2023 141st lhulinsky 433 238 18ms 21 Oct 2024 142nd lomarbrick 431 239 17ms 19 May 2023 143rd wh3n3v3r 🇨🇿 429 240 11ms 11 Nov 2024 144th HumanoidCPU 427 241 18ms 10 Jan 2026 145th bogosorter 422 244 10ms 13 Jul 2025 146th lcubelongren 420 245 10ms 16 Feb 2024 147th celiendonze 🇨🇭 419 246 12ms 27 Jun 2023 147th jtaxen 419 246 17ms 26 Apr 2024 147th BREMAUCY 🇫🇷 419 246 17ms 15 Aug 2025 150th myleopard 414 249 11ms 22 Dec 2022 151st jfallon1997 392 263 18ms 29 Apr 2024 152nd robertovers 383 269 17ms 21 Dec 2023 153rd rustykitty 🇺🇸 377 273 19ms 3 Nov 2025 154th CoolBvll 375 275 18ms 12 Jun 2025 155th TaserTheFox 🇺🇸 367 281 13ms 5 May 2023 155th muser-logiccpu 🇺🇦 367 281 11ms 8 Aug 2025 157th AbhilashaTandon 361 285 10ms 24 Sep 2023 157th qwjhvbxi 361 285 10ms 24 Feb 2024 159th Ripick 355 290 19ms 7 Feb 2023 160th cmccandless 353 292 12ms 16 Oct 2023 First Prev 81–160 of 205 Next Last