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 80th DialFrost 🇸🇬 0 44 12ms 24 Feb 2025 80th rucin93 🇵🇱 0 44 10ms 24 Feb 2025 80th error256 0 44 11ms 12 Apr 2025 80th GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 80th GolfingSuccess 🇬🇷 0 44 12ms 8 May 2025 80th Natanaelel 🇸🇪 0 44 10ms 8 May 2025 80th sean-niemann 🇺🇸 0 44 11ms 8 May 2025 80th edsrzf 🇳🇿 0 44 9ms 10 May 2025 80th 4atj 0 44 11ms 8 Jun 2025 80th lukegustafson 🇺🇸 0 44 12ms 16 Jun 2025 80th JOrE20 0 44 12ms 6 Dec 2025 80th voytxt 🇨🇿 0 44 41ms 6 Feb 2026 80th Steffan153 🇫🇮 0 44 28ms 19 Feb 2026 80th CaedenHarper 🇨🇦 0 44 12ms 2 days ago 80th fuzzylojik-golf 🇺🇸 0 44 12ms 35 hours ago 80th fuzzylojik-golf 🇺🇸 0 44 9ms 34 hours ago 80th Yax42 🇫🇷 0 44 12ms 19 hours ago 80th helbling 🇨🇭 0 44 12ms 17 hours ago 80th HumanoidCPU 0 44 12ms 3 hours ago 100th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 100th saito-ta 🇯🇵 0 45 555ms 10 May 2025 100th GolfingSuccess 🇬🇷 0 45 79ms 14 May 2025 100th XenThe 🇬🇧 0 45 12ms 15 Jul 2025 100th smclaughlin-cf 0 45 12ms 14 Oct 2025 100th albanian-laundromat 0 45 13ms 3 days ago 106th Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 106th kg583 🇺🇸 0 46 458ms 1 Dec 2024 106th Shanethegamer 🇺🇸 0 46 527ms 10 Dec 2024 106th GolfingSuccess 🇬🇷 0 46 458ms 30 Dec 2024 106th pardouin 🇫🇷 0 46 416ms 24 Feb 2025 106th Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 106th GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 106th rucin93 🇵🇱 0 46 8ms 11 May 2025 106th Steffan153 🇫🇮 0 46 376ms 26 days ago 106th fuzzylojik-golf 🇺🇸 0 46 409ms 38 hours ago 106th edsrzf 🇳🇿 0 46 7ms 37 hours ago 117th lifthrasiir 🇰🇷 0 47 416ms 11 Dec 2024 117th emgordon154 0 47 404ms 9 May 2025 117th LukeBridges 🇬🇧 0 47 12ms 23 hours ago 120th HumanoidCPU 0 48 1,424ms 2 hours ago 121st antimon2 🇯🇵 0 50 288ms 16 Dec 2024 121st Shanethegamer 🇺🇸 0 50 315ms 1 Feb 2025 121st ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 121st CaedenHarper 🇨🇦 0 50 733ms 3 days ago 121st Steffan153 🇫🇮 0 50 776ms 3 days ago 121st edsrzf 🇳🇿 0 50 872ms 3 days ago 121st GolfingSuccess 🇬🇷 0 50 765ms 2 days ago 128th DialFrost 🇸🇬 0 51 269ms 24 Feb 2025 128th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 128th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 128th rucin93 🇵🇱 0 51 159ms 8 May 2025 128th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 128th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 128th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 128th HumanoidCPU 0 51 394ms 15 hours ago 128th albanian-laundromat 0 51 5ms 8 hours ago 137th DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 137th CaedenHarper 🇨🇦 0 52 530ms 3 days ago 139th dokutan 0 53 426ms 15 Aug 2025 139th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 139th albanian-laundromat 0 53 467ms 15 Jan 2026 139th AlephSquirrel 0 53 383ms 2 days ago 143rd Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 143rd error256 0 54 66ms 12 Apr 2025 143rd albanian-laundromat 0 54 779ms 15 Jan 2026 143rd GolfingSuccess 🇬🇷 0 54 71ms 2 days ago 143rd dokutan 0 54 778ms 19 hours ago 148th albanian-laundromat 0 55 39ms 3 days ago 149th hallvabo 🇳🇴 0 56 15ms 29 Nov 2024 149th kg583 🇺🇸 0 56 16ms 1 Dec 2024 149th CornerMercury 🇬🇧 0 56 15ms 3 Dec 2024 149th ndren 0 56 16ms 3 Dec 2024 149th lifthrasiir 🇰🇷 0 56 37ms 11 Dec 2024 149th GolfingSuccess 🇬🇷 0 56 16ms 30 Dec 2024 149th khvdm 0 56 16ms 12 Jan 2025 149th pardouin 🇫🇷 0 56 16ms 24 Feb 2025 149th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 149th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 149th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 149th sean-niemann 🇺🇸 0 56 16ms 8 May 2025 First Prev 81–160 of 376 Next Last