The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 days. Why not try and solve them ahead of time?
Gray Code Encoder 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 153rd Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 153rd Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 153rd ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 153rd khvdm 0 62 15ms 12 Jan 2025 153rd bricknellj 0 62 16ms 30 Jan 2025 153rd DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 153rd pardouin 🇫🇷 0 62 14ms 24 Feb 2025 153rd error256 0 62 16ms 12 Apr 2025 153rd MeWhenI 🇻🇦 0 62 14ms 8 May 2025 153rd Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 153rd sean-niemann 🇺🇸 0 62 16ms 8 May 2025 153rd 4atj 0 62 16ms 9 May 2025 153rd emgordon154 0 62 16ms 9 May 2025 153rd Natanaelel 🇸🇪 0 62 16ms 11 May 2025 153rd dokutan 0 62 14ms 15 Aug 2025 153rd hiichbindermax 0 62 18ms 17 Aug 2025 153rd 5cw 🇺🇸 0 62 15ms 22 Aug 2025 153rd commandz0 🇺🇸 0 62 15ms 27 Aug 2025 153rd SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 153rd KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 153rd albanian-laundromat 0 62 16ms 2 Dec 2025 153rd GolfingSuccess 🇬🇷 0 62 5ms 13 Dec 2025 153rd Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 153rd Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 153rd lukegustafson 🇺🇸 0 62 36ms 15 days ago 153rd aksyristos 0 62 14ms 12 days ago 153rd madex 🇩🇪 0 62 15ms 4 days ago 153rd CaedenHarper 🇨🇦 0 62 16ms 2 days ago 153rd KatieLG 🇬🇧 0 62 17ms 15 hours ago 153rd KatieLG 🇬🇧 0 62 416ms 15 hours ago 153rd scpchicken 🇵🇼 0 62 15ms 15 hours ago 153rd fuzzylojik-golf 🇺🇸 0 62 15ms 15 hours ago 153rd StefanHabel 🇨🇦 0 62 15ms 9 hours ago 153rd Seek64 🇩🇪 0 62 15ms 7 hours ago 153rd blaztoma 🇱🇹 0 62 15ms 7 hours ago 153rd BREMAUCY 🇫🇷 0 62 16ms 5 hours ago 153rd Emutis 🇱🇹 0 62 16ms 4 hours ago 198th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 198th albanian-laundromat 0 63 44ms 14 Jan 2026 198th tomh1012 0 63 15ms 2 hours ago 201st jameswmccarty 0 64 15ms 29 Mar 2025 201st albanian-laundromat 0 64 188ms 2 days ago 203rd Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 203rd rucin93 🇵🇱 0 66 6ms 8 May 2025 203rd sean-niemann 🇺🇸 0 66 7ms 8 May 2025 203rd AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 203rd namelessiw 0 66 434ms 2 Nov 2025 203rd GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 203rd albanian-laundromat 0 66 1,391ms 2 days ago 203rd Yax42 🇫🇷 0 66 484ms 25 hours ago 203rd fuzzylojik-golf 🇺🇸 0 66 456ms 13 hours ago 212th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 212th tomh1012 0 67 429ms 2 hours ago 214th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 214th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 214th edsrzf 🇳🇿 0 68 113ms 25 May 2025 214th GolfingSuccess 🇬🇷 0 68 110ms 38 hours ago 218th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 218th CaedenHarper 🇨🇦 0 69 486ms 41 hours ago 220th JOrE20 0 70 41ms 13 Feb 2026 221st kg583 🇺🇸 0 71 27ms 1 Dec 2024 221st CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 221st GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 221st edsrzf 🇳🇿 0 71 14ms 8 May 2025 221st AlephSquirrel 0 71 13ms 9 May 2025 226th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 226th dokutan 0 72 62ms 8 Feb 2026 228th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 229th Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 229th sean-niemann 🇺🇸 0 75 103ms 8 May 2025 231st GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 231st fuzzylojik-golf 🇺🇸 0 76 104ms 13 hours ago 231st edsrzf 🇳🇿 0 76 131ms 5 hours ago 234th rucin93 🇵🇱 0 77 130ms 8 May 2025 234th ovs-code 🇩🇪 0 77 81ms 30 May 2025 234th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 237th saito-ta 🇯🇵 0 78 4ms 10 May 2025 237th rhdqor213 0 78 4ms 10 May 2025 237th albanian-laundromat 0 78 100ms 2 days ago 240th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 First Prev 161–240 of 325 Next Last