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 76th Natanaelel 🇸🇪 0 51 34ms 32 hours ago 76th CaedenHarper 🇨🇦 0 51 882ms 23 hours ago 83rd Shanethegamer 🇺🇸 0 52 1,314ms 13 Dec 2024 83rd Shanethegamer 🇺🇸 0 52 181ms 7 Feb 2026 85th ovs-code 🇩🇪 0 53 125ms 30 May 2025 85th albanian-laundromat 0 53 892ms 6 Dec 2025 85th pardouin 🇫🇷 0 53 2,732ms 19 Feb 2026 85th edsrzf 🇳🇿 0 53 2,777ms 17 hours ago 89th Shanethegamer 🇺🇸 0 54 41ms 13 Dec 2024 89th error256 0 54 28ms 2 May 2025 89th albanian-laundromat 0 54 2,676ms 18 Feb 2026 89th emgordon154 0 54 41ms 41 hours ago 89th ComradeSquirrel 0 54 40ms 13 hours ago 89th helbling 🇨🇭 0 54 33ms 3 hours ago 95th error256 0 55 2,813ms 15 Feb 2026 95th MeWhenI 🇻🇦 0 55 50ms 19 hours ago 97th GolfingSuccess 🇬🇷 0 56 9ms 14 Jan 2026 97th kg583 🇺🇸 0 56 9ms 14 Jan 2026 97th edsrzf 🇳🇿 0 56 9ms 27 hours ago 97th CaedenHarper 🇨🇦 0 56 12ms 23 hours ago 101st edsrzf 🇳🇿 0 57 14ms 10 May 2025 102nd GolfingSuccess 🇬🇷 0 59 224ms 12 Jan 2026 102nd error256 0 59 68ms 13 Jan 2026 102nd rucin93 🇵🇱 0 59 200ms 16 days ago 102nd madex 🇩🇪 0 59 2,743ms 4 days ago 106th kg583 🇺🇸 0 60 365ms 1 Dec 2024 106th ovs-code 🇩🇪 0 60 413ms 23 Feb 2025 106th GolfingSuccess 🇬🇷 0 60 445ms 11 Jan 2026 106th Steffan153 🇫🇮 0 60 446ms 19 Feb 2026 106th sean-niemann 🇺🇸 0 60 458ms 3 days ago 106th pardouin 🇫🇷 0 60 413ms 30 hours ago 112th DialFrost 🇸🇬 0 61 34ms 24 Feb 2025 112th voytxt 🇨🇿 0 61 28ms 1 Jan 2026 112th albanian-laundromat 0 61 13ms 21 days ago 112th aksyristos 0 61 13ms 7 days ago 116th Andrey-Plotnikov 0 62 36ms 12 Jan 2025 116th sean-niemann 🇺🇸 0 62 167ms 19 May 2025 116th XenThe 🇬🇧 0 62 16ms 15 Jul 2025 116th JOrE20 0 62 29ms 26 days ago 116th edsrzf 🇳🇿 0 62 111ms 14 hours ago 121st Shanethegamer 🇺🇸 0 63 198ms 7 May 2025 121st sean-niemann 🇺🇸 0 63 7ms 9 May 2025 121st rucin93 🇵🇱 0 63 7ms 10 May 2025 121st edsrzf 🇳🇿 0 63 6ms 10 May 2025 121st targrik 0 63 7ms 8 Oct 2025 121st GolfingSuccess 🇬🇷 0 63 7ms 12 Jan 2026 127th error256 0 64 4,375ms 15 Jan 2026 128th GolfingSuccess 🇬🇷 0 65 92ms 12 Jan 2026 129th Yax42 🇫🇷 0 66 470ms 6 Jan 2026 129th AdrienHache 🇫🇷 0 66 430ms 6 Jan 2026 129th GolfingSuccess 🇬🇷 0 66 10ms 12 Jan 2026 129th edsrzf 🇳🇿 0 66 11ms 16 hours ago 133rd Shanethegamer 🇺🇸 0 67 92ms 7 May 2025 133rd Shanethegamer 🇺🇸 0 67 436ms 7 May 2025 133rd emgordon154 0 67 396ms 9 May 2025 133rd namelessiw 0 67 407ms 2 Nov 2025 133rd error256 0 67 111ms 30 Jan 2026 133rd CaedenHarper 🇨🇦 0 67 553ms 4 days ago 133rd fuzzylojik-golf 🇺🇸 0 67 490ms 46 hours ago 133rd HumanoidCPU 0 67 577ms 23 hours ago 141st lifthrasiir 🇰🇷 0 68 559ms 11 Dec 2024 141st Shanethegamer 🇺🇸 0 68 257ms 13 Dec 2024 141st Yax42 🇫🇷 0 68 16ms 30 hours ago 144th khvdm 0 69 136ms 13 Jan 2025 144th 4atj 0 69 1,135ms 21 May 2025 144th albanian-laundromat 0 69 533ms 6 Dec 2025 144th GolfingSuccess 🇬🇷 0 69 447ms 14 Jan 2026 144th albanian-laundromat 0 69 380ms 22 Feb 2026 144th error256 0 69 410ms 3 days ago 144th edsrzf 🇳🇿 0 69 394ms 15 hours ago 151st btnlq 0 70 193ms 4 Dec 2024 151st error256 0 70 129ms 15 Jan 2026 151st error256 0 70 18ms 12 days ago 151st Seek64 🇩🇪 0 70 114ms 31 hours ago 155th GolfingSuccess 🇬🇷 0 71 3ms 12 Jan 2026 155th GolfingSuccess 🇬🇷 0 71 24ms 12 Jan 2026 155th GolfingSuccess 🇬🇷 0 71 18ms 14 Jan 2026 155th ovs-code 🇩🇪 0 71 134ms 28 hours ago 155th edsrzf 🇳🇿 0 71 18ms 21 hours ago 155th kg583 🇺🇸 0 71 18ms 19 hours ago First Prev 81–160 of 335 Next Last