The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 27 hours. Why not try and solve them ahead of time?
Rule 110 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 801st IISResetMe 486 133 466ms 9 Jan 2026 802nd Psirving 486 141 12ms 1 Aug 2020 802nd TheZwierzLF 🇵🇱 486 141 14ms 14 Dec 2025 804th Kibble 485 149 13ms 11 Jul 2020 804th Maznek 485 149 14ms 12 Jun 2023 806th JDiLenarda 🇫🇷 485 167 411ms 20 Nov 2023 807th boxjelly 484 118 39ms 12 Feb 2021 808th msbranicky 484 186 11ms 3 Oct 2024 809th rak1507 🇬🇧 483 167 170ms 13 Feb 2021 810th yoshykai 483 228 526ms 8 Apr 2025 811th rvdnieuwendijk 🇳🇱 482 134 284ms 23 Jul 2020 811th Shanethegamer 🇺🇸 482 134 271ms 27 Apr 2022 813th Y0UR-U5ERNAME 482 142 12ms 4 Jul 2022 814th DrPiranoid 482 166 6ms 14 Oct 2022 815th Attero 🇸🇪 481 229 439ms 15 May 2020 816th CaedenHarper 🇨🇦 481 267 305ms 3 Nov 2025 817th guliyevemil1 🇦🇿 480 168 146ms 16 Apr 2020 818th Jviscus1 479 143 41ms 24 Apr 2020 818th MaxElf999 479 143 12ms 3 Oct 2022 818th PaulMWeiser 479 143 417ms 4 Mar 2023 818th rsgray 479 143 11ms 24 Jan 2024 818th itljan30 479 143 11ms 30 Jan 2025 823rd gigaprofisi 🇺🇸 479 151 11ms 17 Nov 2025 824th MeWhenI 🇻🇦 478 155 106ms 18 Nov 2023 825th snoozingnewt 🇨🇦 478 170 90ms 22 Oct 2025 826th Skepfyr 478 206 216ms 4 Jan 2020 827th jwhear 🇺🇸 478 292 1,841ms 1 Oct 2024 828th hellwue 476 144 15ms 25 Jun 2024 828th wh3n3v3r 🇨🇿 476 144 17ms 20 Nov 2024 828th JunkIce 476 144 18ms 24 Jan 2025 831st raphaelimahorn 476 152 12ms 2 Oct 2021 831st ShiraJoseph 🇺🇸 476 152 15ms 15 Oct 2023 833rd Yewzir 🇧🇪 476 204 510ms 27 Jan 2024 834th charliegaming 473 153 13ms 4 Oct 2023 835th pandapawskat 473 169 6ms 1 Sep 2021 836th fgrosshans 🇫🇷 472 145 19ms 10 Jan 2022 836th SniperSmiley 🇺🇸 472 145 22ms 24 Jun 2022 836th SirFireball3521 472 145 12ms 4 Feb 2023 839th dloscutoff 471 133 321ms 27 Nov 2018 840th scpchicken 🇵🇼 471 214 87ms 18 Apr 2023 841st Quadruplay 470 154 12ms 12 Jul 2025 842nd msbranicky 469 140 562ms 3 Oct 2024 843rd ludwig-n 469 146 11ms 6 Apr 2021 843rd inverseLorentz 🇦🇺 469 146 348ms 29 Apr 2024 843rd luuumine 🇫🇷 469 146 11ms 17 Oct 2025 846th roguh 🇬🇹 469 172 154ms 18 Jan 2024 847th citsur 468 171 6ms 17 Jun 2019 848th aaronze 🇦🇺 467 155 16ms 27 Apr 2021 849th MeWhenI 🇻🇦 467 226 45ms 29 Aug 2024 850th Yewzir 🇧🇪 467 299 1,792ms 14 Nov 2025 851st nooberitess 466 147 25ms 22 May 2025 852nd RussellEmerine 466 173 139ms 10 Apr 2020 853rd rambox11 465 172 6ms 16 Mar 2019 854th yokasuretsu 464 123 41ms 11 Jul 2018 855th guliyevemil1 🇦🇿 463 148 10ms 16 Apr 2020 855th andre-lameirinhas 🇵🇹 463 148 16ms 3 Oct 2020 855th Emutis 🇱🇹 463 148 11ms 9 Nov 2025 858th KatieLG 🇬🇧 462 128 1,719ms 20 Oct 2021 859th MeWhenI 🇻🇦 461 193 8ms 1 Oct 2022 860th tatzyr 🇯🇵 460 124 68ms 26 Dec 2024 861st Anonymousellama21 460 149 11ms 7 Mar 2024 862nd ibexq 460 174 6ms 6 Mar 2023 863rd MeWhenI 🇻🇦 460 286 62ms 25 Jun 2022 864th boxjelly 459 280 328ms 10 Feb 2021 865th squadb3 458 158 14ms 10 Oct 2019 865th unfinishedprogram 458 158 13ms 27 Oct 2023 867th zdzc 457 150 11ms 25 Apr 2019 868th JunkIce 456 144 520ms 24 Jan 2025 869th the-zammers 456 177 141ms 15 Dec 2023 870th matanshavit 453 151 15ms 5 May 2020 870th AforAmpere 453 151 13ms 21 Feb 2021 870th aglahir1 453 151 19ms 20 Jul 2022 870th mikehanus 453 151 32ms 21 Nov 2023 870th rollershutter 453 151 11ms 6 Oct 2025 875th Meowsan91 🇨🇿 453 179 408ms 21 Nov 2021 876th Alex-x90 🇺🇸 453 243 434ms 17 Mar 2024 877th msbranicky 452 233 3ms 3 Oct 2024 878th Starwort 🇬🇧 451 152 11ms 5 Apr 2019 878th ay2718 451 152 11ms 8 Aug 2019 880th edsrzf 🇳🇿 450 164 6ms 6 Oct 2024 First Prev 801–880 of 1,671 Next Last