The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 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 not-a-pokemon 0 74 15ms 3 days ago 322nd Shanethegamer 🇺🇸 0 75 107ms 26 Nov 2024 322nd sean-niemann 🇺🇸 0 75 106ms 8 May 2025 322nd HumanoidCPU 0 75 110ms 3 days ago 322nd MeWhenI 🇻🇦 0 75 102ms 31 hours ago 326th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 326th fuzzylojik-golf 🇺🇸 0 76 99ms 4 days ago 326th edsrzf 🇳🇿 0 76 131ms 4 days ago 326th emgordon154 0 76 115ms 3 days ago 330th rucin93 🇵🇱 0 77 130ms 8 May 2025 330th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 330th edsrzf 🇳🇿 0 77 7ms 2 days ago 330th GolfingSuccess 🇬🇷 0 77 8ms 2 days ago 330th Steffan153 🇫🇮 0 77 7ms 45 hours ago 335th saito-ta 🇯🇵 0 78 4ms 10 May 2025 335th rhdqor213 0 78 4ms 10 May 2025 335th albanian-laundromat 0 78 98ms 6 days ago 335th fuzzylojik-golf 🇺🇸 0 78 8ms 3 days ago 335th edsrzf 🇳🇿 0 78 425ms 2 days ago 340th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 341st kumavale 0 81 170ms 26 Nov 2025 341st Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 341st albanian-laundromat 0 81 45ms 6 days ago 341st fuzzylojik-golf 🇺🇸 0 81 9ms 3 days ago 341st stefangimmillaro 0 81 44ms 2 days ago 341st KasperKivimaeki 🇫🇮 0 81 5ms 19 hours ago 347th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 347th emgordon154 0 82 170ms 14 Feb 2026 347th emgordon154 0 82 454ms 3 days ago 347th edsrzf 🇳🇿 0 82 167ms 2 days ago 347th GolfingSuccess 🇬🇷 0 82 17ms 37 hours ago 352nd Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 352nd Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 352nd fantaize 0 83 163ms 17 days ago 352nd GolfingSuccess 🇬🇷 0 83 33ms 3 days ago 352nd MeWhenI 🇻🇦 0 83 229ms 3 days ago 352nd KrausRaus 🇺🇸 0 83 13ms 25 hours ago 358th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 358th ovs-code 🇩🇪 0 84 12ms 10 May 2025 358th fuzzylojik-golf 🇺🇸 0 84 444ms 4 days ago 358th emgordon154 0 84 29ms 40 hours ago 358th dokutan 0 84 417ms 31 hours ago 363rd edsrzf 🇳🇿 0 85 42ms 8 May 2025 363rd edsrzf 🇳🇿 0 85 18ms 9 May 2025 363rd error256 0 85 18ms 10 May 2025 363rd GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 363rd HumanoidCPU 0 85 434ms 2 days ago 363rd HumanoidCPU 0 85 419ms 40 hours ago 369th Shanethegamer 🇺🇸 0 86 158ms 17 Dec 2024 369th kg583 🇺🇸 0 86 39ms 16 Feb 2025 369th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 369th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 369th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 369th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 369th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 369th elgan65536 🇺🇸 0 86 184ms 27 days ago 369th CaedenHarper 🇨🇦 0 86 399ms 6 days ago 369th CaedenHarper 🇨🇦 0 86 154ms 5 days ago 369th edsrzf 🇳🇿 0 86 414ms 3 days ago 369th emgordon154 0 86 406ms 3 days ago 369th GolfingSuccess 🇬🇷 0 86 19ms 2 days ago 369th Steffan153 🇫🇮 0 86 390ms 2 days ago 369th Steffan153 🇫🇮 0 86 19ms 2 days ago 369th stefangimmillaro 0 86 154ms 34 hours ago 369th dokutan 0 86 19ms 3 hours ago 386th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 386th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 386th albanian-laundromat 0 87 1,424ms 6 days ago 386th Yax42 🇫🇷 0 87 2,340ms 3 days ago 386th Steffan153 🇫🇮 0 87 180ms 2 days ago 386th Steffan153 🇫🇮 0 87 4ms 45 hours ago 386th roelderickx 0 87 1,609ms 30 hours ago 393rd kg583 🇺🇸 0 88 23ms 12 Feb 2026 393rd fuzzylojik-golf 🇺🇸 0 88 154ms 4 days ago 395th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 395th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 395th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 395th CaedenHarper 🇨🇦 0 89 103ms 5 days ago 395th madex 🇩🇪 0 89 174ms 42 hours ago 395th edsrzf 🇳🇿 0 89 334ms 33 hours ago First Prev 321–400 of 483 Next Last