Gray Code Decoder in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 Morse Decoder Morse Encoder 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 Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 Morse Decoder Morse Encoder 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 Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 1st 2bular 0 7 302ms 5 Jul 2025 1st Natanaelel 🇸🇪 0 7 315ms 5 Jul 2025 3rd kg583 🇺🇸 0 9 980ms 14 May 2025 4th 2bular 0 13 4ms 9 Dec 2024 4th ovs-code 🇩🇪 0 13 8ms 5 Jan 2025 4th Natanaelel 🇸🇪 0 13 5ms 8 May 2025 4th SirBogman 🇺🇸 0 13 4ms 11 days ago 8th namelessiw 0 14 447ms 10 days ago 9th saito-ta 🇯🇵 0 18 75ms 11 May 2025 10th pardouin 🇫🇷 0 20 72ms 25 Feb 2025 11th ovs-code 🇩🇪 0 22 11ms 23 Feb 2025 12th 2bular 0 28 45ms 14 days ago 12th SirBogman 🇺🇸 0 28 40ms 14 days ago 14th GolfingSuccess 🇬🇷 0 29 97ms 25 Nov 2024 14th Natanaelel 🇸🇪 0 29 44ms 11 May 2025 14th ovs-code 🇩🇪 0 29 45ms 14 days ago 17th ovs-code 🇩🇪 0 31 143ms 30 May 2025 18th Shanethegamer 🇺🇸 0 32 41ms 19 May 2025 19th Natanaelel 🇸🇪 0 33 155ms 8 May 2025 20th 4atj 0 35 282ms 21 May 2025 21st 4atj 0 36 251ms 21 May 2025 22nd saito-ta 🇯🇵 0 37 9ms 11 May 2025 22nd Natanaelel 🇸🇪 0 37 10ms 11 May 2025 24th Natanaelel 🇸🇪 0 38 39ms 8 May 2025 25th error256 0 39 91ms 8 May 2025 26th stefangimmillaro 0 41 77ms 9 May 2025 27th Shanethegamer 🇺🇸 0 42 46ms 13 Dec 2024 27th MeWhenI 🇻🇦 0 42 1,144ms 15 Apr 2025 27th saito-ta 🇯🇵 0 42 360ms 10 May 2025 30th error256 0 45 993ms 12 Apr 2025 31st kg583 🇺🇸 0 46 957ms 20 days ago 31st bitsandbeyond 🇳🇱 0 46 1,150ms 3 days ago 33rd ovs-code 🇩🇪 0 48 354ms 23 Feb 2025 34th antimon2 🇯🇵 0 49 319ms 16 Dec 2024 34th DialFrost 🇸🇬 0 49 54ms 9 May 2025 34th kg583 🇺🇸 0 49 14ms 21 days ago 37th Shanethegamer 🇺🇸 0 50 3,583ms 8 May 2025 38th lukegustafson 🇺🇸 0 51 60ms 16 Jun 2025 39th Shanethegamer 🇺🇸 0 52 958ms 13 Dec 2024 39th error256 0 52 4,899ms 27 days ago 41st kg583 🇺🇸 0 53 12ms 21 days ago 42nd Shanethegamer 🇺🇸 0 54 39ms 13 Dec 2024 42nd rucin93 🇵🇱 0 54 55ms 24 Feb 2025 42nd error256 0 54 26ms 2 May 2025 42nd sean-niemann 🇺🇸 0 54 42ms 8 May 2025 46th Natanaelel 🇸🇪 0 55 13ms 8 May 2025 47th kg583 🇺🇸 0 56 449ms 1 Dec 2024 47th kg583 🇺🇸 0 56 2,719ms 20 days ago 49th edsrzf 🇳🇿 0 57 11ms 10 May 2025 50th pardouin 🇫🇷 0 58 624ms 24 Feb 2025 50th kg583 🇺🇸 0 58 12ms 21 days ago 52nd lifthrasiir 🇰🇷 0 59 506ms 11 Dec 2024 52nd ovs-code 🇩🇪 0 59 418ms 23 Feb 2025 52nd sean-niemann 🇺🇸 0 59 443ms 19 May 2025 55th khvdm 0 60 155ms 13 Jan 2025 55th emgordon154 0 60 294ms 9 May 2025 55th emgordon154 0 60 437ms 9 May 2025 58th DialFrost 🇸🇬 0 61 58ms 24 Feb 2025 59th Andrey-Plotnikov 0 62 44ms 12 Jan 2025 59th XenThe 🇬🇧 0 62 11ms 15 Jul 2025 61st kg583 🇺🇸 0 63 1,006ms 1 Dec 2024 61st hallvabo 🇳🇴 0 63 134ms 30 Dec 2024 61st pardouin 🇫🇷 0 63 240ms 24 Feb 2025 61st Shanethegamer 🇺🇸 0 63 184ms 7 May 2025 61st sean-niemann 🇺🇸 0 63 7ms 9 May 2025 61st rucin93 🇵🇱 0 63 6ms 10 May 2025 61st edsrzf 🇳🇿 0 63 6ms 10 May 2025 61st targrik 0 63 8ms 15 days ago 69th CornerMercury 🇬🇧 0 64 22ms 3 Dec 2024 69th ndren 0 64 20ms 3 Dec 2024 69th lifthrasiir 🇰🇷 0 64 181ms 11 Dec 2024 69th emgordon154 0 64 20ms 9 May 2025 73rd Shanethegamer 🇺🇸 0 65 279ms 13 Dec 2024 74th dokutan 0 66 460ms 18 Aug 2025 74th dokutan 0 66 19ms 18 Aug 2025 1–75 of 169 Next Last