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 161st pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 161st fuzzylojik-golf 🇺🇸 0 60 16ms 33 hours ago 161st emgordon154 0 60 3,008ms 8 hours ago 161st edsrzf 🇳🇿 0 60 2,595ms 6 hours ago 161st fuzzylojik-golf 🇺🇸 0 60 2,673ms 6 mins ago 166th GolfingSuccess 🇬🇷 0 61 2,438ms 8 May 2025 166th madex 🇩🇪 0 61 2,738ms 4 days ago 168th lifthrasiir 🇰🇷 0 62 37ms 22 Nov 2024 168th GolfingSuccess 🇬🇷 0 62 15ms 25 Nov 2024 168th AlephSquirrel 0 62 15ms 25 Nov 2024 168th hallvabo 🇳🇴 0 62 38ms 26 Nov 2024 168th kg583 🇺🇸 0 62 36ms 1 Dec 2024 168th CornerMercury 🇬🇧 0 62 15ms 3 Dec 2024 168th ndren 0 62 15ms 3 Dec 2024 168th btnlq 0 62 15ms 4 Dec 2024 168th Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 168th Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 168th ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 168th khvdm 0 62 15ms 12 Jan 2025 168th bricknellj 0 62 16ms 30 Jan 2025 168th DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 168th pardouin 🇫🇷 0 62 14ms 24 Feb 2025 168th error256 0 62 16ms 12 Apr 2025 168th MeWhenI 🇻🇦 0 62 14ms 8 May 2025 168th Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 168th sean-niemann 🇺🇸 0 62 16ms 8 May 2025 168th 4atj 0 62 16ms 9 May 2025 168th emgordon154 0 62 16ms 9 May 2025 168th Natanaelel 🇸🇪 0 62 16ms 11 May 2025 168th dokutan 0 62 14ms 15 Aug 2025 168th hiichbindermax 0 62 18ms 17 Aug 2025 168th 5cw 🇺🇸 0 62 15ms 22 Aug 2025 168th commandz0 🇺🇸 0 62 15ms 27 Aug 2025 168th SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 168th KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 168th albanian-laundromat 0 62 16ms 2 Dec 2025 168th GolfingSuccess 🇬🇷 0 62 5ms 13 Dec 2025 168th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 168th Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 168th lukegustafson 🇺🇸 0 62 36ms 16 days ago 168th aksyristos 0 62 14ms 13 days ago 168th madex 🇩🇪 0 62 15ms 5 days ago 168th CaedenHarper 🇨🇦 0 62 16ms 3 days ago 168th KatieLG 🇬🇧 0 62 17ms 35 hours ago 168th KatieLG 🇬🇧 0 62 416ms 35 hours ago 168th scpchicken 🇵🇼 0 62 15ms 35 hours ago 168th fuzzylojik-golf 🇺🇸 0 62 15ms 35 hours ago 168th StefanHabel 🇨🇦 0 62 15ms 29 hours ago 168th Seek64 🇩🇪 0 62 15ms 27 hours ago 168th blaztoma 🇱🇹 0 62 15ms 27 hours ago 168th BREMAUCY 🇫🇷 0 62 16ms 25 hours ago 168th Emutis 🇱🇹 0 62 16ms 25 hours ago 168th Andrey2001 0 62 16ms 19 hours ago 168th anter69 🇭🇺 0 62 15ms 15 hours ago 168th HumanoidCPU 0 62 16ms 12 hours ago 168th qpwoeirut 0 62 17ms 7 hours ago 168th stefangimmillaro 0 62 16ms 6 hours ago 168th btjones0 0 62 15ms 4 hours ago 168th bzijlema 🇳🇱 0 62 16ms 76 mins ago 220th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 220th albanian-laundromat 0 63 44ms 14 Jan 2026 220th tomh1012 0 63 15ms 23 hours ago 223rd jameswmccarty 0 64 15ms 29 Mar 2025 223rd albanian-laundromat 0 64 188ms 3 days ago 225th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 225th rucin93 🇵🇱 0 66 6ms 8 May 2025 225th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 225th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 225th namelessiw 0 66 434ms 2 Nov 2025 225th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 225th albanian-laundromat 0 66 1,391ms 3 days ago 225th Yax42 🇫🇷 0 66 484ms 45 hours ago 225th fuzzylojik-golf 🇺🇸 0 66 456ms 34 hours ago 225th edsrzf 🇳🇿 0 66 7ms 6 hours ago 235th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 235th tomh1012 0 67 429ms 23 hours ago 237th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 237th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 237th edsrzf 🇳🇿 0 68 113ms 25 May 2025 237th GolfingSuccess 🇬🇷 0 68 110ms 2 days ago First Prev 161–240 of 367 Next Last