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 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 240th edsrzf 🇳🇿 0 72 7ms 8 hours ago 242nd GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 243rd Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 243rd sean-niemann 🇺🇸 0 75 103ms 8 May 2025 245th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 245th fuzzylojik-golf 🇺🇸 0 76 104ms 26 hours ago 245th edsrzf 🇳🇿 0 76 131ms 17 hours ago 248th rucin93 🇵🇱 0 77 130ms 8 May 2025 248th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 250th saito-ta 🇯🇵 0 78 4ms 10 May 2025 250th rhdqor213 0 78 4ms 10 May 2025 250th albanian-laundromat 0 78 100ms 3 days ago 253rd sean-niemann 🇺🇸 0 80 455ms 8 May 2025 254th kumavale 0 81 156ms 26 Nov 2025 254th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 254th albanian-laundromat 0 81 45ms 3 days ago 257th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 257th emgordon154 0 82 162ms 14 Feb 2026 257th emgordon154 0 82 489ms 22 mins ago 260th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 260th edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 260th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 260th fantaize 0 83 156ms 14 days ago 260th GolfingSuccess 🇬🇷 0 83 33ms 4 mins ago 265th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 265th ovs-code 🇩🇪 0 84 12ms 10 May 2025 265th fuzzylojik-golf 🇺🇸 0 84 444ms 26 hours ago 265th MeWhenI 🇻🇦 0 84 216ms 87 mins ago 269th edsrzf 🇳🇿 0 85 42ms 8 May 2025 269th edsrzf 🇳🇿 0 85 18ms 9 May 2025 269th error256 0 85 18ms 10 May 2025 269th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 273rd Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 273rd kg583 🇺🇸 0 86 39ms 16 Feb 2025 273rd GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 273rd GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 273rd edsrzf 🇳🇿 0 86 155ms 9 May 2025 273rd sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 273rd GolfingSuccess 🇬🇷 0 86 8ms 12 Nov 2025 273rd MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 273rd GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 273rd elgan65536 🇺🇸 0 86 168ms 23 days ago 273rd CaedenHarper 🇨🇦 0 86 399ms 3 days ago 273rd CaedenHarper 🇨🇦 0 86 153ms 2 days ago 273rd KasperKivimaeki 🇫🇮 0 86 12ms 5 hours ago 286th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 286th GolfingSuccess 🇬🇷 0 87 18ms 8 May 2025 286th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 286th albanian-laundromat 0 87 1,424ms 2 days ago 286th Yax42 🇫🇷 0 87 2,430ms 9 hours ago 291st GolfingSuccess 🇬🇷 0 88 5ms 12 Nov 2025 291st kg583 🇺🇸 0 88 23ms 12 Feb 2026 291st fuzzylojik-golf 🇺🇸 0 88 152ms 24 hours ago 294th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 294th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 294th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 294th CaedenHarper 🇨🇦 0 89 103ms 2 days ago 294th emgordon154 0 89 551ms 37 mins ago 299th Yax42 🇫🇷 0 90 13ms 9 hours ago 300th GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 301st namelessiw 0 92 504ms 10 Oct 2025 301st fuzzylojik-golf 🇺🇸 0 92 390ms 25 hours ago 301st madex 🇩🇪 0 92 12ms 4 hours ago 304th edsrzf 🇳🇿 0 93 187ms 17 May 2025 304th CaedenHarper 🇨🇦 0 93 13ms 3 days ago 306th DialFrost 🇸🇬 0 94 13ms 10 May 2025 307th Yax42 🇫🇷 0 95 389ms 8 hours ago 308th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 308th HumanoidCPU 0 96 160ms 2 hours ago 310th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 311th snydej 0 99 43ms 22 Nov 2024 311th albanian-laundromat 0 99 343ms 3 days ago 313th dokutan 0 100 370ms 8 hours ago 314th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 314th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 314th edsrzf 🇳🇿 0 102 295ms 9 May 2025 314th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 314th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 314th kg583 🇺🇸 0 102 13ms 25 Jan 2026 314th CaedenHarper 🇨🇦 0 102 301ms 3 days ago First Prev 241–320 of 349 Next Last