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 160th rucin93 🇵🇱 0 72 9ms 18 days ago 160th aksyristos 0 72 247ms 13 days ago 160th blaztoma 🇱🇹 0 72 123ms 29 hours ago 160th Emutis 🇱🇹 0 72 121ms 28 hours ago 160th KasperKivimaeki 🇫🇮 0 72 4ms 23 hours ago 160th edsrzf 🇳🇿 0 72 9ms 10 hours ago 167th IISResetMe 0 73 310ms 10 Jan 2026 167th pardouin 🇫🇷 0 73 179ms 14 Feb 2026 167th Steffan153 🇫🇮 0 73 1,278ms 19 Feb 2026 170th saito-ta 🇯🇵 0 74 3ms 11 May 2025 170th kg583 🇺🇸 0 74 135ms 3 Oct 2025 170th error256 0 74 3ms 12 Jan 2026 170th lukegustafson 🇺🇸 0 74 189ms 16 days ago 170th albanian-laundromat 0 74 9ms 8 days ago 175th kg583 🇺🇸 0 75 38ms 1 Dec 2024 175th hallvabo 🇳🇴 0 75 131ms 30 Dec 2024 175th Shanethegamer 🇺🇸 0 75 71ms 7 May 2025 175th Natanaelel 🇸🇪 0 75 19ms 11 May 2025 175th commandz0 🇺🇸 0 75 1,210ms 27 Aug 2025 175th albanian-laundromat 0 75 108ms 5 Jan 2026 175th albanian-laundromat 0 75 455ms 6 Jan 2026 175th GolfingSuccess 🇬🇷 0 75 18ms 11 Jan 2026 175th albanian-laundromat 0 75 238ms 22 days ago 175th madex 🇩🇪 0 75 18ms 6 days ago 175th CaedenHarper 🇨🇦 0 75 149ms 3 days ago 175th fuzzylojik-golf 🇺🇸 0 75 123ms 43 hours ago 175th Yax42 🇫🇷 0 75 4ms 25 hours ago 175th edsrzf 🇳🇿 0 75 17ms 10 hours ago 175th plcc0 0 75 22ms 4 hours ago 175th zgialor-lab 0 75 25ms 2 hours ago 191st Shanethegamer 🇺🇸 0 76 129ms 13 Dec 2024 191st ovs-code 🇩🇪 0 76 3ms 10 May 2025 191st AlephSquirrel 0 76 43ms 3 Dec 2025 191st AlephSquirrel 0 76 445ms 3 Dec 2025 191st albanian-laundromat 0 76 18ms 22 days ago 191st albanian-laundromat 0 76 188ms 16 days ago 191st MeWhenI 🇻🇦 0 76 586ms 9 days ago 198th CornerMercury 🇬🇧 0 77 18ms 3 Dec 2024 198th ndren 0 77 20ms 3 Dec 2024 198th lifthrasiir 🇰🇷 0 77 192ms 11 Dec 2024 198th Shanethegamer 🇺🇸 0 77 19ms 13 Dec 2024 198th DialFrost 🇸🇬 0 77 19ms 8 May 2025 198th emgordon154 0 77 161ms 9 May 2025 198th Natanaelel 🇸🇪 0 77 3ms 11 May 2025 198th addmai 0 77 20ms 24 Jul 2025 198th hiichbindermax 0 77 19ms 17 Aug 2025 198th 5cw 🇺🇸 0 77 18ms 22 Aug 2025 198th davecame 0 77 135ms 25 Sep 2025 198th SirBogman 🇺🇸 0 77 240ms 13 Oct 2025 198th jtaxen 0 77 19ms 16 Oct 2025 198th albanian-laundromat 0 77 19ms 25 Nov 2025 198th albanian-laundromat 0 77 412ms 6 Dec 2025 198th anter69 🇭🇺 0 77 139ms 4 Feb 2026 198th Matter1024 🇮🇳 0 77 17ms 12 Feb 2026 198th KasperKivimaeki 🇫🇮 0 77 564ms 9 days ago 198th StefanHabel 🇨🇦 0 77 1,207ms 37 hours ago 198th ahmetdemirag 🇨🇾 0 77 18ms 32 hours ago 198th tomh1012 0 77 17ms 30 hours ago 198th HumanoidCPU 0 77 230ms 19 hours ago 198th qpwoeirut 0 77 20ms 15 hours ago 198th btjones0 0 77 19ms 12 hours ago 198th ComradeSquirrel 0 77 18ms 11 hours ago 198th bzijlema 🇳🇱 0 77 18ms 9 hours ago 224th jameswmccarty 0 78 20ms 29 Mar 2025 224th DialFrost 🇸🇬 0 78 940ms 10 May 2025 224th DialFrost 🇸🇬 0 78 3ms 10 May 2025 224th solisolu 0 78 20ms 10 Nov 2025 228th BREMAUCY 🇫🇷 0 79 18ms 33 hours ago 228th Andrey2001 0 79 18ms 27 hours ago 228th edsrzf 🇳🇿 0 79 30ms 9 hours ago 231st Shanethegamer 🇺🇸 0 80 5ms 3 Jun 2025 231st error256 0 80 466ms 16 Jan 2026 231st madex 🇩🇪 0 80 378ms 36 hours ago 231st stefangimmillaro 0 80 19ms 14 hours ago 231st albanian-laundromat 0 80 28ms 14 hours ago 236th Shanethegamer 🇺🇸 0 81 348ms 3 Jun 2025 237th bricknellj 0 82 17ms 30 Jan 2025 237th dokutan 0 82 17ms 15 Aug 2025 237th scpchicken 🇵🇼 0 82 402ms 44 hours ago 237th KatieLG 🇬🇧 0 82 18ms 44 hours ago First Prev 161–240 of 333 Next Last