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 bytes. 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 Bytes Time Submitted 158th rucin93 🇵🇱 0 51 159ms 8 May 2025 158th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 158th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 158th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 158th albanian-laundromat 0 51 5ms 3 days ago 158th ovs-code 🇩🇪 0 51 19ms 2 days ago 158th Steffan153 🇫🇮 0 51 17ms 2 days ago 158th Steffan153 🇫🇮 0 51 124ms 46 hours ago 169th DialFrost 🇸🇬 0 52 461ms 17 Feb 2025 169th CaedenHarper 🇨🇦 0 52 530ms 7 days ago 169th HumanoidCPU 0 52 394ms 3 days ago 169th plcc0 0 52 459ms 2 days ago 173rd antimon2 🇯🇵 0 53 288ms 16 Dec 2024 173rd Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 173rd dokutan 0 53 426ms 15 Aug 2025 173rd MeWhenI 🇻🇦 0 53 360ms 21 Nov 2025 173rd albanian-laundromat 0 53 467ms 15 Jan 2026 173rd AlephSquirrel 0 53 383ms 6 days ago 173rd DialFrost 🇸🇬 0 53 330ms 2 days ago 173rd ovs-code 🇩🇪 0 53 272ms 2 days ago 173rd Steffan153 🇫🇮 0 53 290ms 43 hours ago 182nd Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 182nd error256 0 54 66ms 12 Apr 2025 182nd albanian-laundromat 0 54 779ms 15 Jan 2026 182nd GolfingSuccess 🇬🇷 0 54 71ms 5 days ago 182nd dokutan 0 54 778ms 4 days ago 182nd fuzzylojik-golf 🇺🇸 0 54 81ms 3 days ago 182nd edsrzf 🇳🇿 0 54 70ms 2 days ago 182nd madex 🇩🇪 0 54 10ms 35 hours ago 190th albanian-laundromat 0 55 39ms 6 days ago 191st Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 191st GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 191st sean-niemann 🇺🇸 0 56 67ms 8 May 2025 191st DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 195th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 195th sean-niemann 🇺🇸 0 57 176ms 25 May 2025 195th edsrzf 🇳🇿 0 57 167ms 25 May 2025 195th GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 195th Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 195th albanian-laundromat 0 57 296ms 5 days ago 195th MeWhenI 🇻🇦 0 57 161ms 34 hours ago 202nd GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 203rd GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 203rd IanUtley 0 59 18ms 8 May 2025 203rd GolfingSuccess 🇬🇷 0 59 63ms 8 May 2025 203rd acollett89 0 59 13ms 26 hours ago 207th pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 207th fuzzylojik-golf 🇺🇸 0 60 16ms 4 days ago 207th emgordon154 0 60 3,008ms 3 days ago 207th edsrzf 🇳🇿 0 60 2,595ms 3 days ago 207th fuzzylojik-golf 🇺🇸 0 60 2,673ms 3 days ago 212th GolfingSuccess 🇬🇷 0 61 2,438ms 8 May 2025 212th madex 🇩🇪 0 61 2,500ms 7 days ago 212th dokutan 0 61 189ms 3 days ago 215th lifthrasiir 🇰🇷 0 62 37ms 22 Nov 2024 215th GolfingSuccess 🇬🇷 0 62 15ms 25 Nov 2024 215th AlephSquirrel 0 62 15ms 25 Nov 2024 215th hallvabo 🇳🇴 0 62 38ms 26 Nov 2024 215th kg583 🇺🇸 0 62 36ms 1 Dec 2024 215th CornerMercury 🇬🇧 0 62 15ms 3 Dec 2024 215th ndren 0 62 15ms 3 Dec 2024 215th btnlq 0 62 15ms 4 Dec 2024 215th Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 215th Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 215th ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 215th khvdm 0 62 15ms 12 Jan 2025 215th bricknellj 0 62 16ms 30 Jan 2025 215th DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 215th pardouin 🇫🇷 0 62 14ms 24 Feb 2025 215th error256 0 62 16ms 12 Apr 2025 215th MeWhenI 🇻🇦 0 62 14ms 8 May 2025 215th Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 215th sean-niemann 🇺🇸 0 62 16ms 8 May 2025 215th 4atj 0 62 16ms 9 May 2025 215th emgordon154 0 62 16ms 9 May 2025 215th Natanaelel 🇸🇪 0 62 16ms 11 May 2025 215th dokutan 0 62 14ms 15 Aug 2025 215th hiichbindermax 0 62 18ms 17 Aug 2025 215th 5cw 🇺🇸 0 62 15ms 22 Aug 2025 215th commandz0 🇺🇸 0 62 15ms 27 Aug 2025 First Prev 161–240 of 489 Next Last