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 320th rhdqor213 0 78 4ms 10 May 2025 320th albanian-laundromat 0 78 93ms 5 days ago 320th fuzzylojik-golf 🇺🇸 0 78 8ms 37 hours ago 320th edsrzf 🇳🇿 0 78 425ms 31 hours ago 325th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 326th kumavale 0 81 156ms 26 Nov 2025 326th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 326th albanian-laundromat 0 81 45ms 5 days ago 326th fuzzylojik-golf 🇺🇸 0 81 9ms 37 hours ago 326th stefangimmillaro 0 81 46ms 25 hours ago 331st GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 331st emgordon154 0 82 159ms 14 Feb 2026 331st emgordon154 0 82 454ms 2 days ago 331st edsrzf 🇳🇿 0 82 161ms 26 hours ago 331st GolfingSuccess 🇬🇷 0 82 17ms 5 mins ago 336th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 336th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 336th fantaize 0 83 156ms 16 days ago 336th GolfingSuccess 🇬🇷 0 83 33ms 2 days ago 336th MeWhenI 🇻🇦 0 83 229ms 40 hours ago 341st Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 341st ovs-code 🇩🇪 0 84 12ms 10 May 2025 341st fuzzylojik-golf 🇺🇸 0 84 444ms 3 days ago 341st KasperKivimaeki 🇫🇮 0 84 12ms 34 hours ago 341st emgordon154 0 84 29ms 2 hours ago 346th edsrzf 🇳🇿 0 85 42ms 8 May 2025 346th edsrzf 🇳🇿 0 85 18ms 9 May 2025 346th error256 0 85 18ms 10 May 2025 346th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 346th HumanoidCPU 0 85 434ms 26 hours ago 346th HumanoidCPU 0 85 419ms 2 hours ago 352nd Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 352nd kg583 🇺🇸 0 86 39ms 16 Feb 2025 352nd GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 352nd GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 352nd sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 352nd MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 352nd GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 352nd elgan65536 🇺🇸 0 86 168ms 25 days ago 352nd CaedenHarper 🇨🇦 0 86 399ms 5 days ago 352nd CaedenHarper 🇨🇦 0 86 153ms 4 days ago 352nd edsrzf 🇳🇿 0 86 414ms 2 days ago 352nd emgordon154 0 86 406ms 35 hours ago 352nd GolfingSuccess 🇬🇷 0 86 19ms 27 hours ago 352nd Steffan153 🇫🇮 0 86 390ms 12 hours ago 352nd Steffan153 🇫🇮 0 86 19ms 10 hours ago 367th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 367th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 367th albanian-laundromat 0 87 1,424ms 5 days ago 367th Yax42 🇫🇷 0 87 2,430ms 2 days ago 367th Steffan153 🇫🇮 0 87 180ms 11 hours ago 367th Steffan153 🇫🇮 0 87 4ms 7 hours ago 373rd kg583 🇺🇸 0 88 23ms 12 Feb 2026 373rd fuzzylojik-golf 🇺🇸 0 88 152ms 3 days ago 375th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 375th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 375th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 375th CaedenHarper 🇨🇦 0 89 103ms 4 days ago 375th roelderickx 0 89 1,614ms 16 hours ago 375th madex 🇩🇪 0 89 172ms 5 hours ago 381st Yax42 🇫🇷 0 90 13ms 2 days ago 382nd namelessiw 0 92 504ms 10 Oct 2025 382nd fuzzylojik-golf 🇺🇸 0 92 383ms 3 days ago 382nd madex 🇩🇪 0 92 12ms 2 days ago 385th edsrzf 🇳🇿 0 93 187ms 17 May 2025 385th CaedenHarper 🇨🇦 0 93 13ms 5 days ago 387th DialFrost 🇸🇬 0 94 13ms 10 May 2025 387th edsrzf 🇳🇿 0 94 21ms 32 hours ago 389th Yax42 🇫🇷 0 95 389ms 2 days ago 390th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 390th HumanoidCPU 0 96 160ms 2 days ago 392nd HumanoidCPU 0 97 7ms 2 hours ago 393rd Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 394th snydej 0 99 43ms 22 Nov 2024 394th albanian-laundromat 0 99 343ms 5 days ago 394th dokutan 0 99 409ms 39 hours ago 397th dokutan 0 100 19ms 39 hours ago 397th ovs-code 🇩🇪 0 100 160ms 11 hours ago 399th HumanoidCPU 0 101 361ms 29 hours ago 399th HumanoidCPU 0 101 382ms 27 hours ago First Prev 321–400 of 457 Next Last