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?
Gray Code Decoder 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 81st Shanethegamer 🇺🇸 0 52 1,314ms 13 Dec 2024 81st Shanethegamer 🇺🇸 0 52 181ms 7 Feb 2026 83rd ovs-code 🇩🇪 0 53 125ms 30 May 2025 83rd albanian-laundromat 0 53 892ms 6 Dec 2025 83rd pardouin 🇫🇷 0 53 2,732ms 19 Feb 2026 83rd edsrzf 🇳🇿 0 53 2,777ms 9 hours ago 87th Shanethegamer 🇺🇸 0 54 41ms 13 Dec 2024 87th error256 0 54 28ms 2 May 2025 87th albanian-laundromat 0 54 2,676ms 18 Feb 2026 87th emgordon154 0 54 41ms 33 hours ago 87th ComradeSquirrel 0 54 40ms 6 hours ago 92nd error256 0 55 2,813ms 15 Feb 2026 92nd MeWhenI 🇻🇦 0 55 50ms 12 hours ago 94th GolfingSuccess 🇬🇷 0 56 9ms 14 Jan 2026 94th kg583 🇺🇸 0 56 9ms 14 Jan 2026 94th edsrzf 🇳🇿 0 56 9ms 20 hours ago 94th helbling 🇨🇭 0 56 39ms 19 hours ago 94th CaedenHarper 🇨🇦 0 56 12ms 16 hours ago 99th edsrzf 🇳🇿 0 57 14ms 10 May 2025 100th GolfingSuccess 🇬🇷 0 59 224ms 12 Jan 2026 100th error256 0 59 68ms 13 Jan 2026 100th rucin93 🇵🇱 0 59 200ms 16 days ago 100th madex 🇩🇪 0 59 2,743ms 4 days ago 104th kg583 🇺🇸 0 60 365ms 1 Dec 2024 104th ovs-code 🇩🇪 0 60 413ms 23 Feb 2025 104th GolfingSuccess 🇬🇷 0 60 445ms 11 Jan 2026 104th Steffan153 🇫🇮 0 60 446ms 19 Feb 2026 104th sean-niemann 🇺🇸 0 60 458ms 3 days ago 104th pardouin 🇫🇷 0 60 413ms 23 hours ago 110th DialFrost 🇸🇬 0 61 34ms 24 Feb 2025 110th voytxt 🇨🇿 0 61 28ms 1 Jan 2026 110th albanian-laundromat 0 61 13ms 21 days ago 110th aksyristos 0 61 13ms 7 days ago 114th Andrey-Plotnikov 0 62 36ms 12 Jan 2025 114th sean-niemann 🇺🇸 0 62 167ms 19 May 2025 114th XenThe 🇬🇧 0 62 16ms 15 Jul 2025 114th JOrE20 0 62 29ms 25 days ago 114th edsrzf 🇳🇿 0 62 111ms 6 hours ago 119th Shanethegamer 🇺🇸 0 63 198ms 7 May 2025 119th sean-niemann 🇺🇸 0 63 7ms 9 May 2025 119th rucin93 🇵🇱 0 63 7ms 10 May 2025 119th edsrzf 🇳🇿 0 63 6ms 10 May 2025 119th targrik 0 63 7ms 8 Oct 2025 119th GolfingSuccess 🇬🇷 0 63 7ms 12 Jan 2026 125th error256 0 64 4,375ms 15 Jan 2026 126th GolfingSuccess 🇬🇷 0 65 92ms 12 Jan 2026 127th Yax42 🇫🇷 0 66 470ms 6 Jan 2026 127th AdrienHache 🇫🇷 0 66 430ms 6 Jan 2026 127th GolfingSuccess 🇬🇷 0 66 10ms 12 Jan 2026 127th edsrzf 🇳🇿 0 66 11ms 9 hours ago 131st Shanethegamer 🇺🇸 0 67 92ms 7 May 2025 131st Shanethegamer 🇺🇸 0 67 436ms 7 May 2025 131st emgordon154 0 67 396ms 9 May 2025 131st namelessiw 0 67 407ms 2 Nov 2025 131st error256 0 67 111ms 30 Jan 2026 131st CaedenHarper 🇨🇦 0 67 553ms 3 days ago 131st fuzzylojik-golf 🇺🇸 0 67 490ms 39 hours ago 131st HumanoidCPU 0 67 577ms 16 hours ago 139th lifthrasiir 🇰🇷 0 68 559ms 11 Dec 2024 139th Shanethegamer 🇺🇸 0 68 257ms 13 Dec 2024 139th Yax42 🇫🇷 0 68 16ms 23 hours ago 142nd khvdm 0 69 136ms 13 Jan 2025 142nd 4atj 0 69 1,135ms 21 May 2025 142nd albanian-laundromat 0 69 533ms 6 Dec 2025 142nd GolfingSuccess 🇬🇷 0 69 447ms 14 Jan 2026 142nd albanian-laundromat 0 69 380ms 22 Feb 2026 142nd error256 0 69 410ms 2 days ago 142nd edsrzf 🇳🇿 0 69 394ms 8 hours ago 149th btnlq 0 70 193ms 4 Dec 2024 149th error256 0 70 129ms 15 Jan 2026 149th error256 0 70 18ms 12 days ago 149th Seek64 🇩🇪 0 70 114ms 23 hours ago 153rd GolfingSuccess 🇬🇷 0 71 3ms 12 Jan 2026 153rd GolfingSuccess 🇬🇷 0 71 24ms 12 Jan 2026 153rd GolfingSuccess 🇬🇷 0 71 18ms 14 Jan 2026 153rd ovs-code 🇩🇪 0 71 134ms 21 hours ago 153rd edsrzf 🇳🇿 0 71 18ms 14 hours ago 153rd kg583 🇺🇸 0 71 18ms 12 hours ago 153rd rhdqor213 0 71 4ms 7 hours ago 160th dokutan 0 72 525ms 15 Aug 2025 First Prev 81–160 of 330 Next Last