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 319th fuzzylojik-golf 🇺🇸 0 84 444ms 2 days ago 319th KasperKivimaeki 🇫🇮 0 84 12ms 20 hours ago 323rd edsrzf 🇳🇿 0 85 42ms 8 May 2025 323rd edsrzf 🇳🇿 0 85 18ms 9 May 2025 323rd error256 0 85 18ms 10 May 2025 323rd GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 323rd HumanoidCPU 0 85 434ms 12 hours ago 328th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 328th kg583 🇺🇸 0 86 39ms 16 Feb 2025 328th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 328th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 328th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 328th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 328th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 328th elgan65536 🇺🇸 0 86 168ms 25 days ago 328th CaedenHarper 🇨🇦 0 86 399ms 4 days ago 328th CaedenHarper 🇨🇦 0 86 153ms 3 days ago 328th edsrzf 🇳🇿 0 86 414ms 35 hours ago 328th emgordon154 0 86 406ms 22 hours ago 328th GolfingSuccess 🇬🇷 0 86 19ms 14 hours ago 341st Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 341st Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 341st albanian-laundromat 0 87 1,424ms 4 days ago 341st Yax42 🇫🇷 0 87 2,430ms 44 hours ago 345th kg583 🇺🇸 0 88 23ms 12 Feb 2026 345th fuzzylojik-golf 🇺🇸 0 88 152ms 2 days ago 347th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 347th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 347th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 347th CaedenHarper 🇨🇦 0 89 103ms 3 days ago 347th roelderickx 0 89 1,614ms 2 hours ago 352nd Yax42 🇫🇷 0 90 13ms 44 hours ago 353rd GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 354th namelessiw 0 92 504ms 10 Oct 2025 354th fuzzylojik-golf 🇺🇸 0 92 383ms 2 days ago 354th madex 🇩🇪 0 92 12ms 39 hours ago 357th edsrzf 🇳🇿 0 93 187ms 17 May 2025 357th CaedenHarper 🇨🇦 0 93 13ms 4 days ago 359th DialFrost 🇸🇬 0 94 13ms 10 May 2025 359th edsrzf 🇳🇿 0 94 21ms 18 hours ago 361st Yax42 🇫🇷 0 95 389ms 44 hours ago 362nd GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 362nd HumanoidCPU 0 96 160ms 38 hours ago 364th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 365th snydej 0 99 43ms 22 Nov 2024 365th albanian-laundromat 0 99 343ms 4 days ago 365th dokutan 0 99 409ms 26 hours ago 368th dokutan 0 100 19ms 26 hours ago 369th HumanoidCPU 0 101 361ms 15 hours ago 369th HumanoidCPU 0 101 382ms 13 hours ago 371st sean-niemann 🇺🇸 0 102 286ms 8 May 2025 371st Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 371st edsrzf 🇳🇿 0 102 295ms 9 May 2025 371st GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 371st ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 371st kg583 🇺🇸 0 102 13ms 25 Jan 2026 371st CaedenHarper 🇨🇦 0 102 301ms 4 days ago 371st fuzzylojik-golf 🇺🇸 0 102 292ms 2 days ago 371st emgordon154 0 102 274ms 32 hours ago 371st edsrzf 🇳🇿 0 102 341ms 5 hours ago 381st lukechampine 0 103 301ms 7 Jun 2025 381st chris124567 0 103 294ms 8 Jun 2025 381st albanian-laundromat 0 103 270ms 16 Dec 2025 381st GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 381st HumanoidCPU 0 103 329ms 13 hours ago 386th UnderKoen 🇳🇱 0 107 2,121ms 25 hours ago 387th edsrzf 🇳🇿 0 109 21ms 7 hours ago 388th GolfingSuccess 🇬🇷 0 111 107ms 11 hours ago 389th retrohun 0 112 16ms 2 days ago 389th edsrzf 🇳🇿 0 112 27ms 9 hours ago 391st edsrzf 🇳🇿 0 114 30ms 19 hours ago 392nd prestosilver 🇺🇸 0 115 418ms 47 hours ago 392nd HumanoidCPU 0 115 260ms 13 hours ago 394th emgordon154 0 116 66ms 9 hours ago 395th GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 396th HumanoidCPU 0 118 14ms 8 hours ago 397th emgordon154 0 119 56ms 33 hours ago 397th not-a-pokemon 0 119 15ms 22 hours ago 399th edsrzf 🇳🇿 0 127 58ms 28 hours ago 400th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 First Prev 321–400 of 423 Next Last