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 41 hours ago 80th fuzzylojik-golf 🇺🇸 0 44 9ms 41 hours ago 80th Yax42 🇫🇷 0 44 12ms 25 hours ago 80th helbling 🇨🇭 0 44 12ms 24 hours ago 80th HumanoidCPU 0 44 15ms 10 hours ago 80th emgordon154 0 44 12ms 5 hours ago 80th MeWhenI 🇻🇦 0 44 14ms 9 mins ago 103rd Andrey-Plotnikov 0 45 12ms 10 Jan 2025 103rd saito-ta 🇯🇵 0 45 555ms 10 May 2025 103rd XenThe 🇬🇧 0 45 14ms 15 Jul 2025 103rd smclaughlin-cf 0 45 13ms 14 Oct 2025 103rd albanian-laundromat 0 45 12ms 3 days ago 108th Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 108th lyphyser 0 46 51ms 11 Feb 2025 108th Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 108th GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 108th rucin93 🇵🇱 0 46 8ms 11 May 2025 108th edsrzf 🇳🇿 0 46 7ms 44 hours ago 114th LukeBridges 🇬🇧 0 47 11ms 29 hours ago 115th HumanoidCPU 0 48 1,424ms 8 hours ago 116th kg583 🇺🇸 0 50 470ms 1 Dec 2024 116th Shanethegamer 🇺🇸 0 50 471ms 10 Dec 2024 116th GolfingSuccess 🇬🇷 0 50 460ms 30 Dec 2024 116th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 116th pardouin 🇫🇷 0 50 433ms 24 Feb 2025 116th emgordon154 0 50 424ms 9 May 2025 116th Steffan153 🇫🇮 0 50 378ms 26 days ago 116th CaedenHarper 🇨🇦 0 50 733ms 3 days ago 116th Steffan153 🇫🇮 0 50 776ms 3 days ago 116th edsrzf 🇳🇿 0 50 872ms 3 days ago 116th GolfingSuccess 🇬🇷 0 50 765ms 2 days ago 116th fuzzylojik-golf 🇺🇸 0 50 420ms 44 hours ago 128th lifthrasiir 🇰🇷 0 51 433ms 11 Dec 2024 128th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 128th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 128th rucin93 🇵🇱 0 51 159ms 8 May 2025 128th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 128th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 128th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 128th albanian-laundromat 0 51 5ms 15 hours ago 136th DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 136th CaedenHarper 🇨🇦 0 52 530ms 4 days ago 136th HumanoidCPU 0 52 394ms 21 hours ago 139th antimon2 🇯🇵 0 53 288ms 16 Dec 2024 139th Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 139th dokutan 0 53 426ms 15 Aug 2025 139th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 139th albanian-laundromat 0 53 467ms 15 Jan 2026 139th AlephSquirrel 0 53 383ms 3 days ago 145th Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 145th DialFrost 🇸🇬 0 54 269ms 17 Feb 2025 145th error256 0 54 66ms 12 Apr 2025 145th albanian-laundromat 0 54 779ms 15 Jan 2026 145th GolfingSuccess 🇬🇷 0 54 71ms 2 days ago 145th dokutan 0 54 778ms 25 hours ago 145th fuzzylojik-golf 🇺🇸 0 54 81ms 6 hours ago 152nd albanian-laundromat 0 55 39ms 3 days ago 153rd Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 153rd GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 153rd sean-niemann 🇺🇸 0 56 67ms 8 May 2025 153rd DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 157th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 157th sean-niemann 🇺🇸 0 57 176ms 25 May 2025 157th edsrzf 🇳🇿 0 57 167ms 25 May 2025 157th GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 First Prev 81–160 of 392 Next Last