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 chars. 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 Chars Time Submitted 156th GolfingSuccess 🇬🇷 0 56 16ms 30 Dec 2024 156th khvdm 0 56 16ms 12 Jan 2025 156th pardouin 🇫🇷 0 56 16ms 24 Feb 2025 156th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 156th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 156th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 156th sean-niemann 🇺🇸 0 56 16ms 8 May 2025 156th emgordon154 0 56 16ms 9 May 2025 156th dokutan 0 56 16ms 18 Aug 2025 156th albanian-laundromat 0 56 16ms 2 Dec 2025 156th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 156th Steffan153 🇫🇮 0 56 16ms 21 Feb 2026 156th fuzzylojik-golf 🇺🇸 0 56 17ms 2 days ago 156th Seek64 🇩🇪 0 56 16ms 39 hours ago 156th BREMAUCY 🇫🇷 0 56 16ms 38 hours ago 156th HumanoidCPU 0 56 15ms 24 hours ago 156th plcc0 0 56 17ms 10 hours ago 178th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 178th sean-niemann 🇺🇸 0 57 176ms 25 May 2025 178th edsrzf 🇳🇿 0 57 167ms 25 May 2025 178th GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 178th Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 178th albanian-laundromat 0 57 296ms 2 days ago 184th GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 184th dokutan 0 58 189ms 4 hours ago 186th GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 186th IanUtley 0 59 18ms 8 May 2025 186th GolfingSuccess 🇬🇷 0 59 63ms 8 May 2025 189th pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 189th fuzzylojik-golf 🇺🇸 0 60 16ms 46 hours ago 189th emgordon154 0 60 3,008ms 21 hours ago 189th edsrzf 🇳🇿 0 60 2,595ms 19 hours ago 189th fuzzylojik-golf 🇺🇸 0 60 2,673ms 12 hours ago 194th GolfingSuccess 🇬🇷 0 61 2,438ms 8 May 2025 194th madex 🇩🇪 0 61 2,738ms 4 days ago 196th AlephSquirrel 0 62 15ms 25 Nov 2024 196th btnlq 0 62 15ms 4 Dec 2024 196th Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 196th Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 196th ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 196th bricknellj 0 62 16ms 30 Jan 2025 196th DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 196th error256 0 62 16ms 12 Apr 2025 196th MeWhenI 🇻🇦 0 62 14ms 8 May 2025 196th Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 196th 4atj 0 62 16ms 9 May 2025 196th Natanaelel 🇸🇪 0 62 16ms 11 May 2025 196th hiichbindermax 0 62 18ms 17 Aug 2025 196th 5cw 🇺🇸 0 62 15ms 22 Aug 2025 196th commandz0 🇺🇸 0 62 15ms 27 Aug 2025 196th SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 196th KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 196th GolfingSuccess 🇬🇷 0 62 5ms 13 Dec 2025 196th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 196th lukegustafson 🇺🇸 0 62 36ms 16 days ago 196th aksyristos 0 62 14ms 13 days ago 196th madex 🇩🇪 0 62 15ms 6 days ago 196th CaedenHarper 🇨🇦 0 62 16ms 4 days ago 196th KatieLG 🇬🇧 0 62 17ms 2 days ago 196th KatieLG 🇬🇧 0 62 416ms 2 days ago 196th scpchicken 🇵🇼 0 62 15ms 2 days ago 196th StefanHabel 🇨🇦 0 62 15ms 42 hours ago 196th blaztoma 🇱🇹 0 62 15ms 40 hours ago 196th Emutis 🇱🇹 0 62 16ms 37 hours ago 196th Andrey2001 0 62 16ms 31 hours ago 196th anter69 🇭🇺 0 62 15ms 27 hours ago 196th qpwoeirut 0 62 17ms 19 hours ago 196th stefangimmillaro 0 62 16ms 18 hours ago 196th btjones0 0 62 15ms 17 hours ago 196th bzijlema 🇳🇱 0 62 16ms 13 hours ago 196th ahmetdemirag 🇨🇾 0 62 15ms 10 hours ago 196th Pyroan 0 62 19ms 4 hours ago 196th edsrzf 🇳🇿 0 62 15ms 2 hours ago 234th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 234th albanian-laundromat 0 63 44ms 14 Jan 2026 234th tomh1012 0 63 15ms 35 hours ago 234th MeWhenI 🇻🇦 0 63 204ms 3 hours ago 238th jameswmccarty 0 64 15ms 29 Mar 2025 238th dokutan 0 64 63ms 8 Feb 2026 238th albanian-laundromat 0 64 188ms 3 days ago First Prev 161–240 of 398 Next Last