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 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 155th HumanoidCPU 0 51 394ms 2 days ago 155th albanian-laundromat 0 51 5ms 47 hours ago 155th ovs-code 🇩🇪 0 51 19ms 11 hours ago 155th Steffan153 🇫🇮 0 51 17ms 11 hours ago 155th Steffan153 🇫🇮 0 51 124ms 7 hours ago 166th DialFrost 🇸🇬 0 52 461ms 17 Feb 2025 166th CaedenHarper 🇨🇦 0 52 530ms 5 days ago 168th dokutan 0 53 426ms 15 Aug 2025 168th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 168th albanian-laundromat 0 53 467ms 15 Jan 2026 168th AlephSquirrel 0 53 383ms 4 days 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 38 hours ago 172nd edsrzf 🇳🇿 0 54 70ms 19 hours ago 179th albanian-laundromat 0 55 39ms 5 days ago 180th hallvabo 🇳🇴 0 56 15ms 29 Nov 2024 180th kg583 🇺🇸 0 56 16ms 1 Dec 2024 180th CornerMercury 🇬🇧 0 56 15ms 3 Dec 2024 180th ndren 0 56 16ms 3 Dec 2024 180th lifthrasiir 🇰🇷 0 56 37ms 11 Dec 2024 180th GolfingSuccess 🇬🇷 0 56 16ms 30 Dec 2024 180th khvdm 0 56 16ms 12 Jan 2025 180th pardouin 🇫🇷 0 56 16ms 24 Feb 2025 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 sean-niemann 🇺🇸 0 56 16ms 8 May 2025 180th emgordon154 0 56 16ms 9 May 2025 180th dokutan 0 56 16ms 18 Aug 2025 180th albanian-laundromat 0 56 16ms 2 Dec 2025 180th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 180th Steffan153 🇫🇮 0 56 16ms 21 Feb 2026 180th fuzzylojik-golf 🇺🇸 0 56 17ms 3 days ago 180th Seek64 🇩🇪 0 56 16ms 2 days ago 180th BREMAUCY 🇫🇷 0 56 16ms 2 days ago 180th HumanoidCPU 0 56 15ms 2 days ago 180th plcc0 0 56 17ms 39 hours ago 202nd Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 202nd sean-niemann 🇺🇸 0 57 176ms 25 May 2025 202nd edsrzf 🇳🇿 0 57 167ms 25 May 2025 202nd GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 202nd Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 202nd albanian-laundromat 0 57 296ms 3 days ago 208th GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 208th dokutan 0 58 189ms 33 hours ago 210th GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 210th IanUtley 0 59 18ms 8 May 2025 210th GolfingSuccess 🇬🇷 0 59 63ms 8 May 2025 213th pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 213th fuzzylojik-golf 🇺🇸 0 60 16ms 3 days ago 213th emgordon154 0 60 3,008ms 2 days ago 213th edsrzf 🇳🇿 0 60 2,595ms 47 hours ago 213th fuzzylojik-golf 🇺🇸 0 60 2,673ms 41 hours ago 218th GolfingSuccess 🇬🇷 0 61 2,438ms 8 May 2025 218th madex 🇩🇪 0 61 2,738ms 5 days ago 220th AlephSquirrel 0 62 15ms 25 Nov 2024 220th btnlq 0 62 15ms 4 Dec 2024 220th Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 220th Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 220th ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 220th bricknellj 0 62 16ms 30 Jan 2025 220th DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 220th error256 0 62 16ms 12 Apr 2025 220th MeWhenI 🇻🇦 0 62 14ms 8 May 2025 220th Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 220th 4atj 0 62 16ms 9 May 2025 220th Natanaelel 🇸🇪 0 62 16ms 11 May 2025 220th hiichbindermax 0 62 18ms 17 Aug 2025 220th 5cw 🇺🇸 0 62 15ms 22 Aug 2025 220th commandz0 🇺🇸 0 62 15ms 27 Aug 2025 220th SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 220th KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 220th GolfingSuccess 🇬🇷 0 62 6ms 13 Dec 2025 220th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 220th lukegustafson 🇺🇸 0 62 36ms 17 days ago 220th aksyristos 0 62 14ms 15 days ago First Prev 161–240 of 457 Next Last