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 165th GolfingSuccess 🇬🇷 0 61 2,438ms 8 May 2025 165th madex 🇩🇪 0 61 2,738ms 4 days ago 167th lifthrasiir 🇰🇷 0 62 37ms 22 Nov 2024 167th GolfingSuccess 🇬🇷 0 62 15ms 25 Nov 2024 167th AlephSquirrel 0 62 15ms 25 Nov 2024 167th hallvabo 🇳🇴 0 62 38ms 26 Nov 2024 167th kg583 🇺🇸 0 62 36ms 1 Dec 2024 167th CornerMercury 🇬🇧 0 62 15ms 3 Dec 2024 167th ndren 0 62 15ms 3 Dec 2024 167th btnlq 0 62 15ms 4 Dec 2024 167th Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 167th Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 167th ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 167th khvdm 0 62 15ms 12 Jan 2025 167th bricknellj 0 62 16ms 30 Jan 2025 167th DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 167th pardouin 🇫🇷 0 62 14ms 24 Feb 2025 167th error256 0 62 16ms 12 Apr 2025 167th MeWhenI 🇻🇦 0 62 14ms 8 May 2025 167th Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 167th sean-niemann 🇺🇸 0 62 16ms 8 May 2025 167th 4atj 0 62 16ms 9 May 2025 167th emgordon154 0 62 16ms 9 May 2025 167th Natanaelel 🇸🇪 0 62 16ms 11 May 2025 167th dokutan 0 62 14ms 15 Aug 2025 167th hiichbindermax 0 62 18ms 17 Aug 2025 167th 5cw 🇺🇸 0 62 15ms 22 Aug 2025 167th commandz0 🇺🇸 0 62 15ms 27 Aug 2025 167th SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 167th KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 167th albanian-laundromat 0 62 16ms 2 Dec 2025 167th GolfingSuccess 🇬🇷 0 62 5ms 13 Dec 2025 167th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 167th Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 167th lukegustafson 🇺🇸 0 62 36ms 16 days ago 167th aksyristos 0 62 14ms 13 days ago 167th madex 🇩🇪 0 62 15ms 5 days ago 167th CaedenHarper 🇨🇦 0 62 16ms 3 days ago 167th KatieLG 🇬🇧 0 62 17ms 35 hours ago 167th KatieLG 🇬🇧 0 62 416ms 35 hours ago 167th scpchicken 🇵🇼 0 62 15ms 35 hours ago 167th fuzzylojik-golf 🇺🇸 0 62 15ms 35 hours ago 167th StefanHabel 🇨🇦 0 62 15ms 29 hours ago 167th Seek64 🇩🇪 0 62 15ms 27 hours ago 167th blaztoma 🇱🇹 0 62 15ms 27 hours ago 167th BREMAUCY 🇫🇷 0 62 16ms 25 hours ago 167th Emutis 🇱🇹 0 62 16ms 24 hours ago 167th Andrey2001 0 62 16ms 19 hours ago 167th anter69 🇭🇺 0 62 15ms 14 hours ago 167th HumanoidCPU 0 62 16ms 12 hours ago 167th qpwoeirut 0 62 17ms 7 hours ago 167th stefangimmillaro 0 62 16ms 6 hours ago 167th btjones0 0 62 15ms 4 hours ago 167th bzijlema 🇳🇱 0 62 16ms 63 mins ago 219th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 219th albanian-laundromat 0 63 44ms 14 Jan 2026 219th tomh1012 0 63 15ms 22 hours ago 222nd jameswmccarty 0 64 15ms 29 Mar 2025 222nd albanian-laundromat 0 64 188ms 3 days ago 224th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 224th rucin93 🇵🇱 0 66 6ms 8 May 2025 224th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 224th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 224th namelessiw 0 66 434ms 2 Nov 2025 224th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 224th albanian-laundromat 0 66 1,391ms 3 days ago 224th Yax42 🇫🇷 0 66 484ms 45 hours ago 224th fuzzylojik-golf 🇺🇸 0 66 456ms 33 hours ago 224th edsrzf 🇳🇿 0 66 7ms 6 hours ago 234th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 234th tomh1012 0 67 429ms 22 hours ago 236th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 236th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 236th edsrzf 🇳🇿 0 68 113ms 25 May 2025 236th GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 240th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 First Prev 161–240 of 366 Next Last