The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 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 318th MeWhenI 🇻🇦 0 75 102ms 8 hours ago 322nd GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 322nd fuzzylojik-golf 🇺🇸 0 76 99ms 3 days ago 322nd edsrzf 🇳🇿 0 76 131ms 3 days ago 322nd emgordon154 0 76 115ms 2 days ago 326th rucin93 🇵🇱 0 77 130ms 8 May 2025 326th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 326th edsrzf 🇳🇿 0 77 7ms 46 hours ago 326th GolfingSuccess 🇬🇷 0 77 8ms 44 hours ago 326th Steffan153 🇫🇮 0 77 7ms 21 hours ago 331st saito-ta 🇯🇵 0 78 4ms 10 May 2025 331st rhdqor213 0 78 4ms 10 May 2025 331st albanian-laundromat 0 78 98ms 5 days ago 331st fuzzylojik-golf 🇺🇸 0 78 8ms 2 days ago 331st edsrzf 🇳🇿 0 78 425ms 45 hours ago 336th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 337th kumavale 0 81 170ms 26 Nov 2025 337th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 337th albanian-laundromat 0 81 45ms 5 days ago 337th fuzzylojik-golf 🇺🇸 0 81 9ms 2 days ago 337th stefangimmillaro 0 81 44ms 39 hours ago 342nd GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 342nd emgordon154 0 82 170ms 14 Feb 2026 342nd emgordon154 0 82 454ms 2 days ago 342nd edsrzf 🇳🇿 0 82 167ms 40 hours ago 342nd GolfingSuccess 🇬🇷 0 82 17ms 14 hours ago 347th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 347th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 347th fantaize 0 83 163ms 16 days ago 347th GolfingSuccess 🇬🇷 0 83 33ms 2 days ago 347th MeWhenI 🇻🇦 0 83 229ms 2 days ago 347th KrausRaus 🇺🇸 0 83 13ms 104 mins ago 353rd Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 353rd ovs-code 🇩🇪 0 84 12ms 10 May 2025 353rd fuzzylojik-golf 🇺🇸 0 84 444ms 3 days ago 353rd KasperKivimaeki 🇫🇮 0 84 12ms 2 days ago 353rd emgordon154 0 84 29ms 17 hours ago 353rd dokutan 0 84 417ms 7 hours ago 359th edsrzf 🇳🇿 0 85 42ms 8 May 2025 359th edsrzf 🇳🇿 0 85 18ms 9 May 2025 359th error256 0 85 18ms 10 May 2025 359th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 359th HumanoidCPU 0 85 434ms 40 hours ago 359th HumanoidCPU 0 85 419ms 16 hours ago 365th Shanethegamer 🇺🇸 0 86 158ms 17 Dec 2024 365th kg583 🇺🇸 0 86 39ms 16 Feb 2025 365th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 365th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 365th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 365th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 365th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 365th elgan65536 🇺🇸 0 86 184ms 26 days ago 365th CaedenHarper 🇨🇦 0 86 399ms 5 days ago 365th CaedenHarper 🇨🇦 0 86 154ms 4 days ago 365th edsrzf 🇳🇿 0 86 414ms 2 days ago 365th emgordon154 0 86 406ms 2 days ago 365th GolfingSuccess 🇬🇷 0 86 19ms 41 hours ago 365th Steffan153 🇫🇮 0 86 390ms 26 hours ago 365th Steffan153 🇫🇮 0 86 19ms 24 hours ago 365th stefangimmillaro 0 86 154ms 11 hours ago 381st Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 381st Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 381st albanian-laundromat 0 87 1,424ms 5 days ago 381st Yax42 🇫🇷 0 87 2,340ms 3 days ago 381st Steffan153 🇫🇮 0 87 180ms 25 hours ago 381st Steffan153 🇫🇮 0 87 4ms 21 hours ago 381st roelderickx 0 87 1,609ms 7 hours ago 388th kg583 🇺🇸 0 88 23ms 12 Feb 2026 388th fuzzylojik-golf 🇺🇸 0 88 154ms 3 days ago 390th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 390th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 390th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 390th CaedenHarper 🇨🇦 0 89 103ms 4 days ago 390th madex 🇩🇪 0 89 174ms 19 hours ago 390th edsrzf 🇳🇿 0 89 334ms 10 hours ago 390th Yax42 🇫🇷 0 89 13ms 8 hours ago 390th dokutan 0 89 476ms 7 hours ago 398th namelessiw 0 92 504ms 10 Oct 2025 398th fuzzylojik-golf 🇺🇸 0 92 383ms 3 days ago 398th madex 🇩🇪 0 92 12ms 2 days ago First Prev 321–400 of 479 Next Last