The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 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 79th edsrzf 🇳🇿 0 41 1,468ms 8 hours ago 82nd ovs-code 🇩🇪 0 42 81ms 30 May 2025 82nd anter69 🇭🇺 0 42 1,272ms 33 hours ago 84th sean-niemann 🇺🇸 0 43 8ms 8 May 2025 84th targrik 0 43 9ms 3 Sep 2025 86th Shanethegamer 🇺🇸 0 44 12ms 10 Dec 2024 86th DialFrost 🇸🇬 0 44 11ms 24 Feb 2025 86th rucin93 🇵🇱 0 44 12ms 24 Feb 2025 86th error256 0 44 14ms 12 Apr 2025 86th GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 86th GolfingSuccess 🇬🇷 0 44 13ms 8 May 2025 86th Natanaelel 🇸🇪 0 44 12ms 8 May 2025 86th sean-niemann 🇺🇸 0 44 12ms 8 May 2025 86th edsrzf 🇳🇿 0 44 9ms 10 May 2025 86th 4atj 0 44 15ms 8 Jun 2025 86th lukegustafson 🇺🇸 0 44 14ms 16 Jun 2025 86th JOrE20 0 44 12ms 6 Dec 2025 86th voytxt 🇨🇿 0 44 12ms 6 Feb 2026 86th Steffan153 🇫🇮 0 44 16ms 19 Feb 2026 86th CaedenHarper 🇨🇦 0 44 14ms 3 days ago 86th fuzzylojik-golf 🇺🇸 0 44 11ms 2 days ago 86th fuzzylojik-golf 🇺🇸 0 44 9ms 2 days ago 86th Yax42 🇫🇷 0 44 12ms 34 hours ago 86th helbling 🇨🇭 0 44 12ms 33 hours ago 86th HumanoidCPU 0 44 15ms 19 hours ago 86th emgordon154 0 44 12ms 14 hours ago 86th MeWhenI 🇻🇦 0 44 14ms 9 hours ago 86th edsrzf 🇳🇿 0 44 13ms 8 hours ago 109th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 109th saito-ta 🇯🇵 0 45 555ms 10 May 2025 109th GolfingSuccess 🇬🇷 0 45 79ms 14 May 2025 109th XenThe 🇬🇧 0 45 14ms 15 Jul 2025 109th smclaughlin-cf 0 45 13ms 14 Oct 2025 109th albanian-laundromat 0 45 12ms 4 days ago 115th Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 115th kg583 🇺🇸 0 46 458ms 1 Dec 2024 115th Shanethegamer 🇺🇸 0 46 527ms 10 Dec 2024 115th GolfingSuccess 🇬🇷 0 46 458ms 30 Dec 2024 115th pardouin 🇫🇷 0 46 416ms 24 Feb 2025 115th Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 115th GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 115th rucin93 🇵🇱 0 46 8ms 11 May 2025 115th Steffan153 🇫🇮 0 46 376ms 27 days ago 115th fuzzylojik-golf 🇺🇸 0 46 409ms 2 days ago 115th edsrzf 🇳🇿 0 46 7ms 2 days ago 126th lifthrasiir 🇰🇷 0 47 416ms 11 Dec 2024 126th emgordon154 0 47 404ms 9 May 2025 126th LukeBridges 🇬🇧 0 47 11ms 38 hours ago 129th HumanoidCPU 0 48 1,424ms 17 hours ago 130th antimon2 🇯🇵 0 50 288ms 16 Dec 2024 130th Shanethegamer 🇺🇸 0 50 315ms 1 Feb 2025 130th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 130th CaedenHarper 🇨🇦 0 50 733ms 4 days ago 130th Steffan153 🇫🇮 0 50 776ms 4 days ago 130th edsrzf 🇳🇿 0 50 872ms 4 days ago 130th GolfingSuccess 🇬🇷 0 50 765ms 3 days ago 130th DialFrost 🇸🇬 0 50 330ms 7 hours ago 138th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 138th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 138th rucin93 🇵🇱 0 51 159ms 8 May 2025 138th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 138th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 138th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 138th HumanoidCPU 0 51 394ms 30 hours ago 138th albanian-laundromat 0 51 5ms 24 hours ago 146th DialFrost 🇸🇬 0 52 461ms 17 Feb 2025 146th CaedenHarper 🇨🇦 0 52 530ms 4 days ago 148th dokutan 0 53 426ms 15 Aug 2025 148th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 148th albanian-laundromat 0 53 467ms 15 Jan 2026 148th AlephSquirrel 0 53 383ms 3 days ago 152nd Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 152nd error256 0 54 66ms 12 Apr 2025 152nd albanian-laundromat 0 54 779ms 15 Jan 2026 152nd GolfingSuccess 🇬🇷 0 54 71ms 3 days ago 152nd dokutan 0 54 778ms 34 hours ago 152nd fuzzylojik-golf 🇺🇸 0 54 81ms 15 hours ago 158th albanian-laundromat 0 55 39ms 4 days ago 159th hallvabo 🇳🇴 0 56 15ms 29 Nov 2024 159th kg583 🇺🇸 0 56 16ms 1 Dec 2024 First Prev 81–160 of 411 Next Last