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 321st rucin93 🇵🇱 0 77 130ms 8 May 2025 321st Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 321st edsrzf 🇳🇿 0 77 7ms 37 hours ago 321st GolfingSuccess 🇬🇷 0 77 8ms 35 hours ago 321st Steffan153 🇫🇮 0 77 7ms 12 hours ago 326th saito-ta 🇯🇵 0 78 4ms 10 May 2025 326th rhdqor213 0 78 4ms 10 May 2025 326th albanian-laundromat 0 78 98ms 5 days ago 326th fuzzylojik-golf 🇺🇸 0 78 8ms 42 hours ago 326th edsrzf 🇳🇿 0 78 425ms 35 hours ago 331st sean-niemann 🇺🇸 0 80 455ms 8 May 2025 332nd kumavale 0 81 170ms 26 Nov 2025 332nd Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 332nd albanian-laundromat 0 81 45ms 5 days ago 332nd fuzzylojik-golf 🇺🇸 0 81 9ms 42 hours ago 332nd stefangimmillaro 0 81 44ms 29 hours ago 337th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 337th emgordon154 0 82 170ms 14 Feb 2026 337th emgordon154 0 82 454ms 2 days ago 337th edsrzf 🇳🇿 0 82 167ms 31 hours ago 337th GolfingSuccess 🇬🇷 0 82 17ms 4 hours ago 342nd Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 342nd Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 342nd fantaize 0 83 163ms 16 days ago 342nd GolfingSuccess 🇬🇷 0 83 33ms 2 days ago 342nd MeWhenI 🇻🇦 0 83 229ms 44 hours ago 347th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 347th ovs-code 🇩🇪 0 84 12ms 10 May 2025 347th fuzzylojik-golf 🇺🇸 0 84 444ms 3 days ago 347th KasperKivimaeki 🇫🇮 0 84 12ms 39 hours ago 347th emgordon154 0 84 29ms 7 hours ago 352nd edsrzf 🇳🇿 0 85 42ms 8 May 2025 352nd edsrzf 🇳🇿 0 85 18ms 9 May 2025 352nd error256 0 85 18ms 10 May 2025 352nd GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 352nd HumanoidCPU 0 85 434ms 30 hours ago 352nd HumanoidCPU 0 85 419ms 7 hours ago 358th Shanethegamer 🇺🇸 0 86 158ms 17 Dec 2024 358th kg583 🇺🇸 0 86 39ms 16 Feb 2025 358th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 358th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 358th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 358th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 358th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 358th elgan65536 🇺🇸 0 86 184ms 26 days ago 358th CaedenHarper 🇨🇦 0 86 399ms 5 days ago 358th CaedenHarper 🇨🇦 0 86 154ms 4 days ago 358th edsrzf 🇳🇿 0 86 414ms 2 days ago 358th emgordon154 0 86 406ms 40 hours ago 358th GolfingSuccess 🇬🇷 0 86 19ms 32 hours ago 358th Steffan153 🇫🇮 0 86 390ms 17 hours ago 358th Steffan153 🇫🇮 0 86 19ms 15 hours ago 358th stefangimmillaro 0 86 154ms 2 hours ago 374th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 374th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 374th albanian-laundromat 0 87 1,424ms 5 days ago 374th Yax42 🇫🇷 0 87 2,430ms 2 days ago 374th Steffan153 🇫🇮 0 87 180ms 15 hours ago 374th Steffan153 🇫🇮 0 87 4ms 12 hours ago 380th kg583 🇺🇸 0 88 23ms 12 Feb 2026 380th fuzzylojik-golf 🇺🇸 0 88 154ms 3 days ago 382nd Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 382nd Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 382nd DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 382nd CaedenHarper 🇨🇦 0 89 103ms 4 days ago 382nd roelderickx 0 89 1,614ms 21 hours ago 382nd madex 🇩🇪 0 89 174ms 9 hours ago 382nd edsrzf 🇳🇿 0 89 334ms 49 mins ago 389th Yax42 🇫🇷 0 90 13ms 2 days ago 390th namelessiw 0 92 504ms 10 Oct 2025 390th fuzzylojik-golf 🇺🇸 0 92 383ms 3 days ago 390th madex 🇩🇪 0 92 12ms 2 days ago 393rd edsrzf 🇳🇿 0 93 187ms 17 May 2025 393rd CaedenHarper 🇨🇦 0 93 13ms 5 days ago 395th DialFrost 🇸🇬 0 94 13ms 10 May 2025 395th edsrzf 🇳🇿 0 94 21ms 37 hours ago 397th Yax42 🇫🇷 0 95 389ms 2 days ago 398th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 398th HumanoidCPU 0 96 166ms 2 days ago 400th HumanoidCPU 0 97 7ms 7 hours ago First Prev 321–400 of 467 Next Last