The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 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 152nd Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 152nd ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 152nd khvdm 0 62 15ms 12 Jan 2025 152nd bricknellj 0 62 16ms 30 Jan 2025 152nd DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 152nd pardouin 🇫🇷 0 62 14ms 24 Feb 2025 152nd error256 0 62 16ms 12 Apr 2025 152nd MeWhenI 🇻🇦 0 62 14ms 8 May 2025 152nd Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 152nd sean-niemann 🇺🇸 0 62 16ms 8 May 2025 152nd 4atj 0 62 16ms 9 May 2025 152nd emgordon154 0 62 16ms 9 May 2025 152nd Natanaelel 🇸🇪 0 62 16ms 11 May 2025 152nd dokutan 0 62 14ms 15 Aug 2025 152nd hiichbindermax 0 62 18ms 17 Aug 2025 152nd 5cw 🇺🇸 0 62 15ms 22 Aug 2025 152nd commandz0 🇺🇸 0 62 15ms 27 Aug 2025 152nd SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 152nd KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 152nd albanian-laundromat 0 62 16ms 2 Dec 2025 152nd GolfingSuccess 🇬🇷 0 62 5ms 13 Dec 2025 152nd Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 152nd Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 152nd lukegustafson 🇺🇸 0 62 36ms 15 days ago 152nd aksyristos 0 62 14ms 12 days ago 152nd madex 🇩🇪 0 62 15ms 4 days ago 152nd CaedenHarper 🇨🇦 0 62 16ms 2 days ago 152nd KatieLG 🇬🇧 0 62 17ms 14 hours ago 152nd KatieLG 🇬🇧 0 62 416ms 14 hours ago 152nd scpchicken 🇵🇼 0 62 15ms 14 hours ago 152nd fuzzylojik-golf 🇺🇸 0 62 15ms 14 hours ago 152nd StefanHabel 🇨🇦 0 62 15ms 7 hours ago 152nd Seek64 🇩🇪 0 62 15ms 6 hours ago 152nd blaztoma 🇱🇹 0 62 15ms 6 hours ago 152nd BREMAUCY 🇫🇷 0 62 16ms 4 hours ago 152nd Emutis 🇱🇹 0 62 16ms 3 hours ago 197th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 197th albanian-laundromat 0 63 44ms 14 Jan 2026 197th tomh1012 0 63 15ms 94 mins ago 200th jameswmccarty 0 64 15ms 29 Mar 2025 200th albanian-laundromat 0 64 188ms 2 days ago 202nd Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 202nd rucin93 🇵🇱 0 66 6ms 8 May 2025 202nd sean-niemann 🇺🇸 0 66 7ms 8 May 2025 202nd AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 202nd namelessiw 0 66 434ms 2 Nov 2025 202nd GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 202nd albanian-laundromat 0 66 1,391ms 2 days ago 202nd Yax42 🇫🇷 0 66 484ms 23 hours ago 202nd fuzzylojik-golf 🇺🇸 0 66 456ms 12 hours ago 211th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 211th tomh1012 0 67 429ms 91 mins ago 213th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 213th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 213th edsrzf 🇳🇿 0 68 113ms 25 May 2025 213th GolfingSuccess 🇬🇷 0 68 110ms 37 hours ago 217th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 217th CaedenHarper 🇨🇦 0 69 486ms 40 hours ago 219th JOrE20 0 70 41ms 13 Feb 2026 220th kg583 🇺🇸 0 71 27ms 1 Dec 2024 220th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 220th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 220th edsrzf 🇳🇿 0 71 14ms 8 May 2025 220th AlephSquirrel 0 71 13ms 9 May 2025 225th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 225th dokutan 0 72 62ms 8 Feb 2026 227th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 228th Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 228th sean-niemann 🇺🇸 0 75 103ms 8 May 2025 230th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 230th fuzzylojik-golf 🇺🇸 0 76 104ms 12 hours ago 230th edsrzf 🇳🇿 0 76 131ms 3 hours ago 233rd rucin93 🇵🇱 0 77 130ms 8 May 2025 233rd ovs-code 🇩🇪 0 77 81ms 30 May 2025 233rd Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 236th saito-ta 🇯🇵 0 78 4ms 10 May 2025 236th rhdqor213 0 78 4ms 10 May 2025 236th albanian-laundromat 0 78 100ms 2 days ago 239th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 240th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 First Prev 161–240 of 323 Next Last