The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. 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 721st MeWhenI 🇻🇦 528 179 4ms 11 Sep 2022 722nd madeforlosers 527 130 19ms 30 Nov 2023 722nd Babafaba 527 130 13ms 26 Oct 2025 724th tobeannouncd 527 153 125ms 5 Jan 2024 725th KatieLG 🇬🇧 525 115 27ms 10 Oct 2025 726th Shanethegamer 🇺🇸 525 198 49ms 4 Oct 2024 727th Waffle3z 524 109 38ms 22 Jan 2021 727th KatieLG 🇬🇧 524 109 44ms 11 Apr 2022 729th benwilliamgraham 523 131 20ms 25 Oct 2021 729th DrPiranoid 523 131 10ms 12 Oct 2022 729th BREMAUCY 🇫🇷 523 131 14ms 4 Jan 2024 732nd ChristophHornung 523 155 403ms 21 Nov 2021 733rd Shanethegamer 🇺🇸 522 120 673ms 2 Jul 2021 734th annaproxy 520 156 402ms 22 Jun 2023 735th Dazza314 🇬🇧 519 132 12ms 31 Oct 2020 735th nstearns96 🇬🇧 519 132 321ms 10 Jan 2023 737th aksyristos 519 154 7ms 30 Jan 2023 738th Salutations45 517 140 11ms 30 Dec 2024 739th retrohun 517 188 76ms 28 Dec 2022 740th janbehrens 🇩🇪 516 155 6ms 25 Oct 2021 741st hemphen 516 157 395ms 29 Aug 2022 742nd OllieBoyne 🇬🇧 515 133 11ms 2 Jan 2021 743rd retrohun 514 106 10ms 1 Jan 2023 744th Mabeloid 🇳🇴 513 128 513ms 22 Sep 2024 744th Babafaba 513 128 591ms 26 Oct 2025 746th madex 🇩🇪 513 156 6ms 16 Jan 2021 746th elttil 513 156 6ms 28 Jan 2026 748th revlayle 🇺🇸 513 158 382ms 28 Dec 2021 749th fynnkroeger 511 134 12ms 4 Jan 2023 749th HumanoidCPU 511 134 17ms 17 Feb 2025 749th zgialor-lab 511 134 11ms 15 days ago 752nd KatieLG 🇬🇧 511 211 120ms 15 Jan 2023 753rd boxjelly 510 157 6ms 17 Feb 2021 754th Shanethegamer 🇺🇸 510 207 54ms 20 Oct 2024 755th alemelis 509 123 237ms 29 Sep 2024 756th MeWhenI 🇻🇦 508 253 304ms 10 Feb 2023 757th garrisonhh 507 135 19ms 21 Nov 2020 757th Bonjour27891 🇻🇳 507 135 15ms 13 Mar 2022 757th jfallon1997 507 135 11ms 6 Sep 2022 760th MeWhenI 🇻🇦 507 194 137ms 11 Sep 2022 761st MeWhenI 🇻🇦 507 275 1,771ms 7 Nov 2025 762nd dokutan 506 143 12ms 5 Jun 2025 763rd TheZwierzLF 🇵🇱 505 113 88ms 5 Jan 2026 764th forthuser 504 136 18ms 24 Jul 2023 764th mbittner20 504 136 11ms 19 Aug 2023 766th thisishowmymindworks 🇳🇴 502 144 11ms 5 Oct 2020 766th ArmaanAS 502 144 14ms 5 Feb 2021 768th hardlyBearable 500 137 11ms 25 May 2019 768th geofft 500 137 28ms 11 Dec 2020 768th charliegaming 500 137 11ms 4 Oct 2023 768th Alban-Boissard 500 137 11ms 14 Jun 2025 772nd Protothor 499 145 15ms 11 days ago 773rd dokutan 498 221 383ms 24 Sep 2025 774th detrumi 🇳🇱 497 126 436ms 24 Oct 2020 775th neel11235813 496 115 43ms 17 Mar 2023 776th skps2010 496 138 11ms 16 Jun 2019 776th amishtal 496 138 18ms 30 Nov 2019 778th msbranicky 495 199 133ms 3 Oct 2024 779th Dominoscompute 495 210 39ms 20 Apr 2023 780th janbehrens 🇩🇪 494 150 117ms 5 Aug 2021 781st retrohun 494 162 6ms 20 Jun 2019 782nd yzhs 🇩🇪 493 139 17ms 29 Feb 2020 782nd feherd 493 139 11ms 29 Aug 2021 784th janbehrens 🇩🇪 492 150 7ms 3 Jul 2023 785th boxjelly 492 164 147ms 27 Jan 2021 786th ei14 491 163 6ms 9 May 2024 787th HumanoidCPU 490 134 380ms 17 Feb 2025 788th Aurel300 🇨🇭 490 201 177ms 20 Jun 2024 789th msrawson 489 140 12ms 28 Aug 2018 789th decorator-factory 489 140 11ms 23 May 2019 789th xkacer 🇨🇿 489 140 10ms 31 Jan 2021 789th msbranicky 489 140 18ms 3 Oct 2024 793rd LukeBridges 🇬🇧 489 148 12ms 23 May 2023 794th yzhs 🇩🇪 489 165 130ms 26 Jul 2021 795th roavin 488 166 374ms 8 Jul 2022 796th dokutan 487 194 6ms 28 Sep 2024 797th MeWhenI 🇻🇦 486 127 1,229ms 15 Sep 2025 798th IISResetMe 486 133 466ms 9 Jan 2026 799th Psirving 486 141 12ms 1 Aug 2020 799th TheZwierzLF 🇵🇱 486 141 14ms 14 Dec 2025 First Prev 721–800 of 1,669 Next Last
