The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 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 77th GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 77th GolfingSuccess 🇬🇷 0 44 12ms 8 May 2025 77th Natanaelel 🇸🇪 0 44 10ms 8 May 2025 77th sean-niemann 🇺🇸 0 44 11ms 8 May 2025 77th edsrzf 🇳🇿 0 44 9ms 10 May 2025 77th 4atj 0 44 11ms 8 Jun 2025 77th lukegustafson 🇺🇸 0 44 12ms 16 Jun 2025 77th JOrE20 0 44 12ms 6 Dec 2025 77th voytxt 🇨🇿 0 44 41ms 6 Feb 2026 77th Steffan153 🇫🇮 0 44 28ms 19 Feb 2026 77th CaedenHarper 🇨🇦 0 44 12ms 2 days ago 77th fuzzylojik-golf 🇺🇸 0 44 12ms 26 hours ago 77th fuzzylojik-golf 🇺🇸 0 44 9ms 25 hours ago 77th Yax42 🇫🇷 0 44 12ms 10 hours ago 77th helbling 🇨🇭 0 44 12ms 8 hours ago 96th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 96th saito-ta 🇯🇵 0 45 555ms 10 May 2025 96th GolfingSuccess 🇬🇷 0 45 79ms 14 May 2025 96th XenThe 🇬🇧 0 45 12ms 15 Jul 2025 96th smclaughlin-cf 0 45 12ms 14 Oct 2025 96th albanian-laundromat 0 45 13ms 3 days ago 102nd Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 102nd kg583 🇺🇸 0 46 458ms 1 Dec 2024 102nd Shanethegamer 🇺🇸 0 46 527ms 10 Dec 2024 102nd GolfingSuccess 🇬🇷 0 46 458ms 30 Dec 2024 102nd pardouin 🇫🇷 0 46 416ms 24 Feb 2025 102nd Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 102nd GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 102nd rucin93 🇵🇱 0 46 8ms 11 May 2025 102nd Steffan153 🇫🇮 0 46 376ms 26 days ago 102nd fuzzylojik-golf 🇺🇸 0 46 409ms 29 hours ago 102nd edsrzf 🇳🇿 0 46 7ms 28 hours ago 113th lifthrasiir 🇰🇷 0 47 416ms 11 Dec 2024 113th emgordon154 0 47 404ms 9 May 2025 113th LukeBridges 🇬🇧 0 47 12ms 14 hours ago 116th antimon2 🇯🇵 0 50 288ms 16 Dec 2024 116th Shanethegamer 🇺🇸 0 50 315ms 1 Feb 2025 116th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 116th CaedenHarper 🇨🇦 0 50 733ms 3 days ago 116th Steffan153 🇫🇮 0 50 776ms 3 days ago 116th edsrzf 🇳🇿 0 50 872ms 3 days ago 116th GolfingSuccess 🇬🇷 0 50 765ms 2 days ago 123rd DialFrost 🇸🇬 0 51 269ms 24 Feb 2025 123rd Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 123rd GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 123rd rucin93 🇵🇱 0 51 159ms 8 May 2025 123rd Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 123rd sean-niemann 🇺🇸 0 51 150ms 9 May 2025 123rd DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 123rd HumanoidCPU 0 51 394ms 5 hours ago 131st DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 131st CaedenHarper 🇨🇦 0 52 530ms 3 days ago 131st albanian-laundromat 0 52 5ms 3 days ago 134th dokutan 0 53 426ms 15 Aug 2025 134th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 134th albanian-laundromat 0 53 467ms 15 Jan 2026 134th AlephSquirrel 0 53 383ms 2 days ago 138th Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 138th error256 0 54 66ms 12 Apr 2025 138th albanian-laundromat 0 54 779ms 15 Jan 2026 138th GolfingSuccess 🇬🇷 0 54 71ms 2 days ago 138th dokutan 0 54 800ms 9 hours ago 143rd albanian-laundromat 0 55 39ms 3 days ago 144th hallvabo 🇳🇴 0 56 15ms 29 Nov 2024 144th kg583 🇺🇸 0 56 16ms 1 Dec 2024 144th CornerMercury 🇬🇧 0 56 15ms 3 Dec 2024 144th ndren 0 56 16ms 3 Dec 2024 144th lifthrasiir 🇰🇷 0 56 37ms 11 Dec 2024 144th GolfingSuccess 🇬🇷 0 56 16ms 30 Dec 2024 144th khvdm 0 56 16ms 12 Jan 2025 144th pardouin 🇫🇷 0 56 16ms 24 Feb 2025 144th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 144th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 144th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 144th sean-niemann 🇺🇸 0 56 16ms 8 May 2025 144th emgordon154 0 56 16ms 9 May 2025 144th dokutan 0 56 16ms 18 Aug 2025 144th albanian-laundromat 0 56 16ms 2 Dec 2025 144th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 144th Steffan153 🇫🇮 0 56 16ms 21 Feb 2026 First Prev 81–160 of 352 Next Last