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 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 159th emgordon154 0 60 3,008ms 6 hours ago 159th edsrzf 🇳🇿 0 60 2,595ms 4 hours ago 163rd GolfingSuccess 🇬🇷 0 61 2,438ms 8 May 2025 163rd madex 🇩🇪 0 61 2,738ms 4 days ago 165th lifthrasiir 🇰🇷 0 62 37ms 22 Nov 2024 165th GolfingSuccess 🇬🇷 0 62 15ms 25 Nov 2024 165th AlephSquirrel 0 62 15ms 25 Nov 2024 165th hallvabo 🇳🇴 0 62 38ms 26 Nov 2024 165th kg583 🇺🇸 0 62 36ms 1 Dec 2024 165th CornerMercury 🇬🇧 0 62 15ms 3 Dec 2024 165th ndren 0 62 15ms 3 Dec 2024 165th btnlq 0 62 15ms 4 Dec 2024 165th Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 165th Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 165th ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 165th khvdm 0 62 15ms 12 Jan 2025 165th bricknellj 0 62 16ms 30 Jan 2025 165th DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 165th pardouin 🇫🇷 0 62 14ms 24 Feb 2025 165th error256 0 62 16ms 12 Apr 2025 165th MeWhenI 🇻🇦 0 62 14ms 8 May 2025 165th Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 165th sean-niemann 🇺🇸 0 62 16ms 8 May 2025 165th 4atj 0 62 16ms 9 May 2025 165th emgordon154 0 62 16ms 9 May 2025 165th Natanaelel 🇸🇪 0 62 16ms 11 May 2025 165th dokutan 0 62 14ms 15 Aug 2025 165th hiichbindermax 0 62 18ms 17 Aug 2025 165th 5cw 🇺🇸 0 62 15ms 22 Aug 2025 165th commandz0 🇺🇸 0 62 15ms 27 Aug 2025 165th SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 165th KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 165th albanian-laundromat 0 62 16ms 2 Dec 2025 165th GolfingSuccess 🇬🇷 0 62 5ms 13 Dec 2025 165th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 165th Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 165th lukegustafson 🇺🇸 0 62 36ms 16 days ago 165th aksyristos 0 62 14ms 13 days ago 165th madex 🇩🇪 0 62 15ms 5 days ago 165th CaedenHarper 🇨🇦 0 62 16ms 3 days ago 165th KatieLG 🇬🇧 0 62 17ms 34 hours ago 165th KatieLG 🇬🇧 0 62 416ms 34 hours ago 165th scpchicken 🇵🇼 0 62 15ms 34 hours ago 165th fuzzylojik-golf 🇺🇸 0 62 15ms 34 hours ago 165th StefanHabel 🇨🇦 0 62 15ms 28 hours ago 165th Seek64 🇩🇪 0 62 15ms 26 hours ago 165th blaztoma 🇱🇹 0 62 15ms 26 hours ago 165th BREMAUCY 🇫🇷 0 62 16ms 24 hours ago 165th Emutis 🇱🇹 0 62 16ms 23 hours ago 165th Andrey2001 0 62 16ms 17 hours ago 165th anter69 🇭🇺 0 62 15ms 13 hours ago 165th HumanoidCPU 0 62 16ms 10 hours ago 165th qpwoeirut 0 62 17ms 5 hours ago 165th stefangimmillaro 0 62 16ms 4 hours ago 165th btjones0 0 62 15ms 3 hours ago 216th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 216th albanian-laundromat 0 63 44ms 14 Jan 2026 216th tomh1012 0 63 15ms 21 hours ago 219th jameswmccarty 0 64 15ms 29 Mar 2025 219th albanian-laundromat 0 64 188ms 3 days ago 221st Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 221st rucin93 🇵🇱 0 66 6ms 8 May 2025 221st sean-niemann 🇺🇸 0 66 7ms 8 May 2025 221st AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 221st namelessiw 0 66 434ms 2 Nov 2025 221st GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 221st albanian-laundromat 0 66 1,391ms 3 days ago 221st Yax42 🇫🇷 0 66 484ms 43 hours ago 221st fuzzylojik-golf 🇺🇸 0 66 456ms 32 hours ago 221st edsrzf 🇳🇿 0 66 7ms 4 hours ago 231st GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 231st tomh1012 0 67 429ms 21 hours ago 233rd Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 233rd sean-niemann 🇺🇸 0 68 131ms 8 May 2025 233rd edsrzf 🇳🇿 0 68 113ms 25 May 2025 233rd GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 237th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 237th CaedenHarper 🇨🇦 0 69 486ms 2 days ago 239th JOrE20 0 70 41ms 13 Feb 2026 240th kg583 🇺🇸 0 71 27ms 1 Dec 2024 First Prev 161–240 of 362 Next Last