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 154th albanian-laundromat 0 51 5ms 43 hours ago 154th ovs-code 🇩🇪 0 51 19ms 8 hours ago 154th Steffan153 🇫🇮 0 51 17ms 7 hours ago 154th Steffan153 🇫🇮 0 51 124ms 3 hours ago 165th DialFrost 🇸🇬 0 52 461ms 17 Feb 2025 165th CaedenHarper 🇨🇦 0 52 530ms 5 days ago 167th dokutan 0 53 426ms 15 Aug 2025 167th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 167th albanian-laundromat 0 53 467ms 15 Jan 2026 167th AlephSquirrel 0 53 383ms 4 days ago 171st Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 171st error256 0 54 66ms 12 Apr 2025 171st albanian-laundromat 0 54 779ms 15 Jan 2026 171st GolfingSuccess 🇬🇷 0 54 71ms 4 days ago 171st dokutan 0 54 778ms 2 days ago 171st fuzzylojik-golf 🇺🇸 0 54 81ms 34 hours ago 171st edsrzf 🇳🇿 0 54 70ms 15 hours ago 178th albanian-laundromat 0 55 39ms 4 days ago 179th hallvabo 🇳🇴 0 56 15ms 29 Nov 2024 179th kg583 🇺🇸 0 56 16ms 1 Dec 2024 179th CornerMercury 🇬🇧 0 56 15ms 3 Dec 2024 179th ndren 0 56 16ms 3 Dec 2024 179th lifthrasiir 🇰🇷 0 56 37ms 11 Dec 2024 179th GolfingSuccess 🇬🇷 0 56 16ms 30 Dec 2024 179th khvdm 0 56 16ms 12 Jan 2025 179th pardouin 🇫🇷 0 56 16ms 24 Feb 2025 179th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 179th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 179th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 179th sean-niemann 🇺🇸 0 56 16ms 8 May 2025 179th emgordon154 0 56 16ms 9 May 2025 179th dokutan 0 56 16ms 18 Aug 2025 179th albanian-laundromat 0 56 16ms 2 Dec 2025 179th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 179th Steffan153 🇫🇮 0 56 16ms 21 Feb 2026 179th fuzzylojik-golf 🇺🇸 0 56 17ms 3 days ago 179th Seek64 🇩🇪 0 56 16ms 2 days ago 179th BREMAUCY 🇫🇷 0 56 16ms 2 days ago 179th HumanoidCPU 0 56 15ms 2 days ago 179th plcc0 0 56 17ms 35 hours ago 201st Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 201st sean-niemann 🇺🇸 0 57 176ms 25 May 2025 201st edsrzf 🇳🇿 0 57 167ms 25 May 2025 201st GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 201st Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 201st albanian-laundromat 0 57 296ms 3 days ago 207th GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 207th dokutan 0 58 189ms 29 hours ago 209th GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 209th IanUtley 0 59 18ms 8 May 2025 209th GolfingSuccess 🇬🇷 0 59 63ms 8 May 2025 212th pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 212th fuzzylojik-golf 🇺🇸 0 60 16ms 2 days ago 212th emgordon154 0 60 3,008ms 45 hours ago 212th edsrzf 🇳🇿 0 60 2,595ms 43 hours ago 212th fuzzylojik-golf 🇺🇸 0 60 2,673ms 37 hours ago 217th GolfingSuccess 🇬🇷 0 61 2,438ms 8 May 2025 217th madex 🇩🇪 0 61 2,738ms 5 days ago 219th AlephSquirrel 0 62 15ms 25 Nov 2024 219th btnlq 0 62 15ms 4 Dec 2024 219th Shanethegamer 🇺🇸 0 62 16ms 10 Dec 2024 219th Artemis21 🇬🇧 0 62 16ms 24 Dec 2024 219th ovs-code 🇩🇪 0 62 15ms 5 Jan 2025 219th bricknellj 0 62 16ms 30 Jan 2025 219th DialFrost 🇸🇬 0 62 15ms 17 Feb 2025 219th error256 0 62 16ms 12 Apr 2025 219th MeWhenI 🇻🇦 0 62 14ms 8 May 2025 219th Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 219th 4atj 0 62 16ms 9 May 2025 219th Natanaelel 🇸🇪 0 62 16ms 11 May 2025 219th hiichbindermax 0 62 18ms 17 Aug 2025 219th 5cw 🇺🇸 0 62 15ms 22 Aug 2025 219th commandz0 🇺🇸 0 62 15ms 27 Aug 2025 219th SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 219th KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 219th GolfingSuccess 🇬🇷 0 62 5ms 13 Dec 2025 219th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 219th lukegustafson 🇺🇸 0 62 36ms 17 days ago 219th aksyristos 0 62 14ms 14 days ago 219th madex 🇩🇪 0 62 15ms 7 days ago First Prev 161–240 of 453 Next Last