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 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 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 Chars Time Submitted 721st jfallon1997 284 263 18ms 29 Apr 2024 722nd commandz0 🇺🇸 284 296 511ms 11 Jun 2023 723rd Natanaelel 🇸🇪 283 190 175ms 16 Feb 2023 724th Re-Adventures 🇮🇳 282 477 277ms 19 Jan 2025 725th Maximizer02 280 320 127ms 13 Apr 2024 726th robertovers 277 269 17ms 21 Dec 2023 727th tomh1012 274 307 300ms 20 days ago 728th rustykitty 🇺🇸 273 273 19ms 3 Nov 2025 729th TheZwierzLF 🇵🇱 271 207 285ms 24 Dec 2025 730th CoolBvll 271 275 18ms 12 Jun 2025 731st bac0id 271 311 407ms 27 Jun 2024 732nd Yewzir 🇧🇪 266 443 489ms 12 Feb 2023 733rd TaserTheFox 🇺🇸 265 281 13ms 5 May 2023 733rd muser-logiccpu 🇺🇦 265 281 11ms 8 Aug 2025 735th deancureton 265 318 12ms 31 Dec 2024 736th aksyristos 263 367 2ms 26 Jan 2023 737th AbhilashaTandon 262 285 10ms 24 Sep 2023 737th qwjhvbxi 262 285 10ms 24 Feb 2024 739th Ripick 257 290 19ms 7 Feb 2023 740th LunacyNGH 257 479 14ms 10 Aug 2023 741st cmccandless 255 292 12ms 16 Oct 2023 742nd LeeCamp 255 293 11ms 8 Jan 2023 743rd ItsEthanDev 252 296 13ms 14 Dec 2023 744th MyXoToD 🇩🇪 251 336 10ms 12 Aug 2025 745th jameswmccarty 249 300 16ms 11 Jul 2024 746th duckyluuk 🇳🇱 246 342 186ms 27 Aug 2025 747th brochmann 🇸🇪 245 305 17ms 12 Oct 2025 748th JOrE20 244 538 26ms 16 Feb 2026 749th nephila-nacrea 🇬🇧 243 266 4ms 20 Feb 2023 750th benradclyffe 243 531 423ms 14 May 2023 751st eiburns 241 309 18ms 4 Aug 2023 751st Vaekor 241 309 18ms 4 Aug 2023 753rd croc54 241 310 17ms 6 Jan 2025 754th alemelis 239 312 12ms 18 Oct 2024 755th ndren 237 355 152ms 13 Feb 2026 756th Lxkasmehl 236 358 12ms 11 Jul 2025 757th azure-blondon 235 318 19ms 11 May 2024 758th James-Oswald 🇺🇸 232 322 18ms 24 Aug 2024 759th scpchicken 🇵🇼 232 363 278ms 17 Apr 2023 760th Jacob385 231 557 434ms 17 Feb 2025 761st samnoyes 229 325 19ms 14 Dec 2024 762nd inverseLorentz 🇦🇺 229 326 14ms 12 Mar 2024 763rd Andrey135296 227 329 11ms 28 Sep 2023 764th keelimeguy 🇺🇸 226 330 18ms 1 Jul 2025 765th KatieLG 🇬🇧 223 290 138ms 28 Jul 2024 766th Yewzir 🇧🇪 223 433 2,148ms 10 Feb 2024 767th misono-nobuhiro 222 292 4ms 25 Jan 2023 768th BREMAUCY 🇫🇷 220 383 116ms 4 Oct 2025 769th Ralac07 🇦🇺 219 257 44ms 1 Aug 2025 770th zyc-2024 🇨🇳 218 342 11ms 4 Jan 2026 771st galloj 🇨🇿 218 432 178ms 14 Aug 2023 772nd jmatko 217 344 61ms 28 Oct 2023 773rd kmathis22 214 394 445ms 12 Dec 2025 774th Andrey2001 212 352 17ms 4 Feb 2026 775th CutSandstone 211 353 165ms 4 Jul 2024 776th codereport 🇨🇦 211 399 254ms 17 Apr 2025 777th madex 🇩🇪 210 268 38ms 2 Jun 2023 778th IoLimmer 209 357 17ms 22 Aug 2024 779th yuchuehw 208 358 19ms 5 Jan 2024 780th InigoK 🇺🇸 207 406 663ms 11 Oct 2025 781st mwarvik 🇳🇴 205 409 466ms 1 Jan 2026 782nd atazzam 🇺🇸 202 369 11ms 29 Dec 2022 783rd roguh 🇬🇹 200 609 124ms 16 Jan 2024 784th blaztoma 🇱🇹 198 426 143ms 1 Sep 2025 785th Schmitt-Very-Cool 197 427 129ms 22 Nov 2025 786th KatieLG 🇬🇧 195 692 318ms 26 Jun 2025 787th najs91 194 432 395ms 9 Oct 2024 788th AbuzarN 191 390 12ms 4 Oct 2023 789th KatieLG 🇬🇧 191 546 377ms 6 Jan 2023 790th zt14427 188 396 11ms 11 Feb 2025 791st SB-945 187 451 470ms 21 Feb 2024 792nd KatieLG-Transpiler 🇬🇧 180 415 214ms 7 Jan 2023 793rd lynn 174 428 13ms 14 Oct 2023 794th KatieLG-Transpiler 🇬🇧 173 489 21ms 7 Jan 2023 795th Schmitt-Very-Cool 173 744 562ms 5 Oct 2025 796th liviucerchez 170 469 6ms 16 Oct 2023 797th AidanWalter 168 502 259ms 26 Nov 2025 798th plainoldcheese 🇦🇶 164 454 21ms 19 Jan 2024 799th gpikmddk 163 514 443ms 31 Oct 2025 800th WatMan77 162 834 244ms 15 Aug 2023 First Prev 721–800 of 857 Next Last
