The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 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 HumanoidCPU 0 52 394ms 2 days ago 159th plcc0 0 52 459ms 16 hours ago 163rd antimon2 🇯🇵 0 53 288ms 16 Dec 2024 163rd Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 163rd dokutan 0 53 426ms 15 Aug 2025 163rd MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 163rd albanian-laundromat 0 53 467ms 15 Jan 2026 163rd AlephSquirrel 0 53 383ms 4 days ago 163rd DialFrost 🇸🇬 0 53 330ms 28 hours ago 163rd ovs-code 🇩🇪 0 53 272ms 9 hours ago 163rd Steffan153 🇫🇮 0 53 290ms 2 hours ago 172nd Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 172nd error256 0 54 66ms 12 Apr 2025 172nd albanian-laundromat 0 54 779ms 15 Jan 2026 172nd GolfingSuccess 🇬🇷 0 54 71ms 4 days ago 172nd dokutan 0 54 778ms 2 days ago 172nd fuzzylojik-golf 🇺🇸 0 54 81ms 36 hours ago 172nd edsrzf 🇳🇿 0 54 70ms 17 hours ago 179th albanian-laundromat 0 55 39ms 4 days ago 180th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 180th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 180th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 180th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 184th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 184th sean-niemann 🇺🇸 0 57 176ms 25 May 2025 184th edsrzf 🇳🇿 0 57 167ms 25 May 2025 184th GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 184th Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 184th albanian-laundromat 0 57 296ms 3 days ago 190th GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 191st GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 191st IanUtley 0 59 18ms 8 May 2025 191st GolfingSuccess 🇬🇷 0 59 63ms 8 May 2025 194th pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 194th fuzzylojik-golf 🇺🇸 0 60 16ms 3 days ago 194th emgordon154 0 60 3,008ms 47 hours ago 194th edsrzf 🇳🇿 0 60 2,595ms 45 hours ago 194th fuzzylojik-golf 🇺🇸 0 60 2,673ms 39 hours ago 199th GolfingSuccess 🇬🇷 0 61 2,438ms 8 May 2025 199th madex 🇩🇪 0 61 2,738ms 5 days ago 199th dokutan 0 61 189ms 37 hours ago 202nd lifthrasiir 🇰🇷 0 62 37ms 22 Nov 2024 202nd GolfingSuccess 🇬🇷 0 62 15ms 25 Nov 2024 202nd AlephSquirrel 0 62 15ms 25 Nov 2024 202nd hallvabo 🇳🇴 0 62 38ms 26 Nov 2024 202nd kg583 🇺🇸 0 62 36ms 1 Dec 2024 202nd CornerMercury 🇬🇧 0 62 15ms 3 Dec 2024 202nd ndren 0 62 15ms 3 Dec 2024 202nd btnlq 0 62 15ms 4 Dec 2024 202nd Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 202nd Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 202nd ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 202nd khvdm 0 62 15ms 12 Jan 2025 202nd bricknellj 0 62 16ms 30 Jan 2025 202nd DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 202nd pardouin 🇫🇷 0 62 14ms 24 Feb 2025 202nd error256 0 62 16ms 12 Apr 2025 202nd MeWhenI 🇻🇦 0 62 14ms 8 May 2025 202nd Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 202nd sean-niemann 🇺🇸 0 62 16ms 8 May 2025 202nd 4atj 0 62 16ms 9 May 2025 202nd emgordon154 0 62 16ms 9 May 2025 202nd Natanaelel 🇸🇪 0 62 16ms 11 May 2025 202nd dokutan 0 62 14ms 15 Aug 2025 202nd hiichbindermax 0 62 18ms 17 Aug 2025 202nd 5cw 🇺🇸 0 62 15ms 22 Aug 2025 202nd commandz0 🇺🇸 0 62 15ms 27 Aug 2025 202nd SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 202nd KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 202nd albanian-laundromat 0 62 16ms 2 Dec 2025 202nd GolfingSuccess 🇬🇷 0 62 5ms 13 Dec 2025 202nd Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 202nd Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 202nd lukegustafson 🇺🇸 0 62 36ms 17 days ago 202nd aksyristos 0 62 14ms 15 days ago 202nd madex 🇩🇪 0 62 15ms 7 days ago 202nd CaedenHarper 🇨🇦 0 62 16ms 5 days ago 202nd KatieLG 🇬🇧 0 62 17ms 3 days ago 202nd KatieLG 🇬🇧 0 62 416ms 3 days ago 202nd scpchicken 🇵🇼 0 62 15ms 3 days ago First Prev 161–240 of 459 Next Last