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 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 80th DialFrost 🇸🇬 0 44 11ms 24 Feb 2025 80th rucin93 🇵🇱 0 44 12ms 24 Feb 2025 80th error256 0 44 14ms 12 Apr 2025 80th GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 80th GolfingSuccess 🇬🇷 0 44 13ms 8 May 2025 80th Natanaelel 🇸🇪 0 44 12ms 8 May 2025 80th sean-niemann 🇺🇸 0 44 12ms 8 May 2025 80th edsrzf 🇳🇿 0 44 9ms 10 May 2025 80th 4atj 0 44 15ms 8 Jun 2025 80th lukegustafson 🇺🇸 0 44 14ms 16 Jun 2025 80th JOrE20 0 44 12ms 6 Dec 2025 80th AdrienHache 🇫🇷 0 44 60ms 5 Feb 2026 80th voytxt 🇨🇿 0 44 12ms 6 Feb 2026 80th Steffan153 🇫🇮 0 44 16ms 19 Feb 2026 80th CaedenHarper 🇨🇦 0 44 14ms 2 days ago 80th fuzzylojik-golf 🇺🇸 0 44 11ms 40 hours ago 80th fuzzylojik-golf 🇺🇸 0 44 9ms 40 hours ago 80th Yax42 🇫🇷 0 44 12ms 24 hours ago 80th helbling 🇨🇭 0 44 12ms 23 hours ago 80th HumanoidCPU 0 44 15ms 9 hours ago 80th emgordon154 0 44 12ms 4 hours ago 102nd Andrey-Plotnikov 0 45 12ms 10 Jan 2025 102nd saito-ta 🇯🇵 0 45 555ms 10 May 2025 102nd XenThe 🇬🇧 0 45 14ms 15 Jul 2025 102nd smclaughlin-cf 0 45 13ms 14 Oct 2025 102nd albanian-laundromat 0 45 12ms 3 days ago 107th Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 107th lyphyser 0 46 51ms 11 Feb 2025 107th Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 107th GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 107th rucin93 🇵🇱 0 46 8ms 11 May 2025 107th edsrzf 🇳🇿 0 46 7ms 43 hours ago 113th LukeBridges 🇬🇧 0 47 11ms 29 hours ago 114th HumanoidCPU 0 48 1,424ms 8 hours ago 115th kg583 🇺🇸 0 50 470ms 1 Dec 2024 115th Shanethegamer 🇺🇸 0 50 471ms 10 Dec 2024 115th GolfingSuccess 🇬🇷 0 50 460ms 30 Dec 2024 115th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 115th pardouin 🇫🇷 0 50 433ms 24 Feb 2025 115th emgordon154 0 50 424ms 9 May 2025 115th Steffan153 🇫🇮 0 50 378ms 26 days ago 115th CaedenHarper 🇨🇦 0 50 733ms 3 days ago 115th Steffan153 🇫🇮 0 50 776ms 3 days ago 115th edsrzf 🇳🇿 0 50 872ms 3 days ago 115th GolfingSuccess 🇬🇷 0 50 765ms 2 days ago 115th fuzzylojik-golf 🇺🇸 0 50 420ms 43 hours ago 127th lifthrasiir 🇰🇷 0 51 433ms 11 Dec 2024 127th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 127th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 127th rucin93 🇵🇱 0 51 159ms 8 May 2025 127th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 127th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 127th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 127th albanian-laundromat 0 51 5ms 14 hours ago 135th DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 135th CaedenHarper 🇨🇦 0 52 530ms 4 days ago 135th HumanoidCPU 0 52 394ms 20 hours ago 138th antimon2 🇯🇵 0 53 288ms 16 Dec 2024 138th Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 138th dokutan 0 53 426ms 15 Aug 2025 138th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 138th albanian-laundromat 0 53 467ms 15 Jan 2026 138th AlephSquirrel 0 53 383ms 3 days ago 144th Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 144th DialFrost 🇸🇬 0 54 269ms 17 Feb 2025 144th error256 0 54 66ms 12 Apr 2025 144th albanian-laundromat 0 54 779ms 15 Jan 2026 144th GolfingSuccess 🇬🇷 0 54 71ms 2 days ago 144th dokutan 0 54 778ms 24 hours ago 144th fuzzylojik-golf 🇺🇸 0 54 81ms 5 hours ago 151st albanian-laundromat 0 55 39ms 3 days ago 152nd Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 152nd GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 152nd sean-niemann 🇺🇸 0 56 67ms 8 May 2025 152nd DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 156th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 156th sean-niemann 🇺🇸 0 57 176ms 25 May 2025 156th edsrzf 🇳🇿 0 57 167ms 25 May 2025 156th GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 156th Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 First Prev 81–160 of 389 Next Last