The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Gray Code Encoder in all languages in chars. 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 Chars Time Submitted 76th emgordon154 0 40 1,438ms 2 days ago 76th stefangimmillaro 0 40 1,401ms 41 hours ago 76th Steffan153 🇫🇮 0 40 1,437ms 4 hours ago 84th GolfingSuccess 🇬🇷 0 41 16ms 8 Aug 2025 84th fuzzylojik-golf 🇺🇸 0 41 1,405ms 2 days ago 84th edsrzf 🇳🇿 0 41 1,468ms 24 hours ago 87th ovs-code 🇩🇪 0 42 81ms 30 May 2025 87th anter69 🇭🇺 0 42 1,272ms 2 days ago 89th sean-niemann 🇺🇸 0 43 8ms 8 May 2025 89th targrik 0 43 9ms 3 Sep 2025 89th Steffan153 🇫🇮 0 43 9ms 3 hours ago 92nd Shanethegamer 🇺🇸 0 44 12ms 10 Dec 2024 92nd DialFrost 🇸🇬 0 44 11ms 24 Feb 2025 92nd rucin93 🇵🇱 0 44 12ms 24 Feb 2025 92nd error256 0 44 14ms 12 Apr 2025 92nd GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 92nd GolfingSuccess 🇬🇷 0 44 13ms 8 May 2025 92nd Natanaelel 🇸🇪 0 44 12ms 8 May 2025 92nd sean-niemann 🇺🇸 0 44 12ms 8 May 2025 92nd edsrzf 🇳🇿 0 44 9ms 10 May 2025 92nd 4atj 0 44 15ms 8 Jun 2025 92nd lukegustafson 🇺🇸 0 44 14ms 16 Jun 2025 92nd JOrE20 0 44 12ms 6 Dec 2025 92nd voytxt 🇨🇿 0 44 12ms 6 Feb 2026 92nd Steffan153 🇫🇮 0 44 16ms 19 Feb 2026 92nd CaedenHarper 🇨🇦 0 44 14ms 3 days ago 92nd fuzzylojik-golf 🇺🇸 0 44 11ms 2 days ago 92nd fuzzylojik-golf 🇺🇸 0 44 9ms 2 days ago 92nd Yax42 🇫🇷 0 44 12ms 2 days ago 92nd helbling 🇨🇭 0 44 12ms 2 days ago 92nd HumanoidCPU 0 44 15ms 34 hours ago 92nd emgordon154 0 44 12ms 29 hours ago 92nd MeWhenI 🇻🇦 0 44 14ms 24 hours ago 92nd edsrzf 🇳🇿 0 44 13ms 24 hours ago 92nd ComradeSquirrel 0 44 12ms 14 hours ago 116th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 116th saito-ta 🇯🇵 0 45 555ms 10 May 2025 116th GolfingSuccess 🇬🇷 0 45 79ms 14 May 2025 116th XenThe 🇬🇧 0 45 14ms 15 Jul 2025 116th smclaughlin-cf 0 45 13ms 14 Oct 2025 116th albanian-laundromat 0 45 12ms 4 days ago 116th Steffan153 🇫🇮 0 45 6ms 4 hours ago 123rd Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 123rd kg583 🇺🇸 0 46 458ms 1 Dec 2024 123rd Shanethegamer 🇺🇸 0 46 527ms 10 Dec 2024 123rd GolfingSuccess 🇬🇷 0 46 458ms 30 Dec 2024 123rd pardouin 🇫🇷 0 46 416ms 24 Feb 2025 123rd Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 123rd GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 123rd rucin93 🇵🇱 0 46 8ms 11 May 2025 123rd Steffan153 🇫🇮 0 46 376ms 27 days ago 123rd fuzzylojik-golf 🇺🇸 0 46 409ms 2 days ago 123rd edsrzf 🇳🇿 0 46 7ms 2 days ago 134th lifthrasiir 🇰🇷 0 47 416ms 11 Dec 2024 134th emgordon154 0 47 404ms 9 May 2025 134th LukeBridges 🇬🇧 0 47 11ms 2 days ago 137th HumanoidCPU 0 48 1,424ms 33 hours ago 138th plcc0 0 49 463ms 11 hours ago 139th antimon2 🇯🇵 0 50 288ms 16 Dec 2024 139th Shanethegamer 🇺🇸 0 50 315ms 1 Feb 2025 139th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 139th CaedenHarper 🇨🇦 0 50 733ms 4 days ago 139th Steffan153 🇫🇮 0 50 776ms 4 days ago 139th edsrzf 🇳🇿 0 50 872ms 4 days ago 139th GolfingSuccess 🇬🇷 0 50 765ms 3 days ago 139th DialFrost 🇸🇬 0 50 330ms 22 hours ago 139th ovs-code 🇩🇪 0 50 272ms 3 hours ago 148th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 148th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 148th rucin93 🇵🇱 0 51 159ms 8 May 2025 148th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 148th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 148th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 148th HumanoidCPU 0 51 394ms 46 hours ago 148th albanian-laundromat 0 51 5ms 39 hours ago 148th ovs-code 🇩🇪 0 51 19ms 4 hours ago 148th Steffan153 🇫🇮 0 51 17ms 3 hours ago 148th Steffan153 🇫🇮 0 51 124ms a min ago 159th DialFrost 🇸🇬 0 52 461ms 17 Feb 2025 159th CaedenHarper 🇨🇦 0 52 530ms 5 days ago First Prev 81–160 of 442 Next Last