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?
Divisors 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 28th 4atj 984 57 101ms 18 Apr 2025 28th ryyyn 🇺🇸 984 57 10ms 20 May 2025 28th Lv0Sys 🇵🇱 984 57 11ms 31 May 2025 28th smilesformiles3 984 57 10ms 14 Jun 2025 28th Flekay 🇩🇪 984 57 11ms 19 Jun 2025 28th lukegustafson 🇺🇸 984 57 11ms 30 Jun 2025 28th dirckvdende 984 57 10ms 2 Jul 2025 28th wuduculfre 984 57 11ms 21 Jul 2025 28th Daniel-Ellison 984 57 10ms 8 Aug 2025 28th janlelis 984 57 12ms 14 Aug 2025 28th blaztoma 🇱🇹 984 57 10ms 27 Sep 2025 28th BrunoVisnadi 🇧🇷 984 57 10ms 27 Sep 2025 28th qpwoeirut 984 57 10ms 29 Sep 2025 28th albanian-laundromat 984 57 11ms 4 Oct 2025 28th Babafaba 984 57 10ms 15 Oct 2025 28th luuumine 🇫🇷 984 57 10ms 16 Oct 2025 28th solisolu 984 57 11ms 30 Oct 2025 28th webmiche 984 57 11ms 3 Nov 2025 28th jacekwladzinski 984 57 11ms 4 Nov 2025 28th Mukundan314 984 57 11ms 4 Nov 2025 28th sunleonid 984 57 11ms 26 Nov 2025 28th GodlyProgrammer1 984 57 11ms 27 Nov 2025 28th CommandLeo 🇮🇹 984 57 11ms 28 Nov 2025 28th hellopir2 984 57 11ms 4 Dec 2025 28th Natanaelel 🇸🇪 984 57 10ms 9 Feb 2026 28th yujh-yujh 🇬🇸 984 57 11ms 16 days ago 28th Googolplexo 🇷🇺 984 57 11ms 6 hours ago 348th MeWhenI 🇻🇦 982 24 56ms 23 Jul 2022 348th canissimia 🇦🇶 982 24 54ms 23 Jul 2022 348th sisyphus-ppcg 🇦🇺 982 24 55ms 24 Jul 2022 348th saito-ta 🇯🇵 982 24 52ms 2 Aug 2022 348th clockworknazo 982 24 55ms 8 Aug 2022 348th GolfingSuccess 🇬🇷 982 24 58ms 19 Nov 2023 348th fuzzylojik-golf 🇺🇸 982 24 55ms 2 Aug 2025 348th emgordon154 982 24 56ms 21 Nov 2025 356th prplz 🇦🇺 979 49 11ms 9 Oct 2019 356th primo-ppcg 🇹🇭 979 49 9ms 22 Apr 2020 356th Argeento 🇵🇱 979 49 13ms 8 Oct 2020 356th rucin93 🇵🇱 979 49 12ms 9 Oct 2020 356th JayXon 🇺🇸 979 49 12ms 30 Jan 2021 356th GrayJoKing 🇦🇺 979 49 13ms 17 Feb 2021 356th o0lit3 🇺🇸 979 49 11ms 17 Feb 2021 356th BBoehm 🇩🇪 979 49 11ms 18 Feb 2021 356th emplv 🇱🇻 979 49 9ms 18 Feb 2021 356th Lydxn 🇨🇦 979 49 10ms 15 Jan 2022 356th sisyphus-ppcg 🇦🇺 979 49 10ms 9 Nov 2022 356th sean-niemann 🇺🇸 979 49 11ms 1 Mar 2023 356th Steffan153 🇫🇮 979 49 11ms 5 Mar 2023 356th lukegustafson 🇺🇸 979 49 12ms 17 Nov 2023 356th vlpx 🇫🇮 979 49 11ms 18 Jun 2024 356th targrik 979 49 12ms 7 Jun 2025 356th xsot 🇸🇬 979 49 10ms 31 Jul 2025 373rd Steffan153 🇫🇮 975 28 105ms 26 Nov 2022 373rd Lydxn 🇨🇦 975 28 101ms 26 Nov 2022 373rd nwellnhof 🇩🇪 975 28 102ms 26 Nov 2022 373rd GrayJoKing 🇦🇺 975 28 110ms 27 Nov 2022 373rd sean-niemann 🇺🇸 975 28 109ms 7 Mar 2025 378th juliansiebert 🇩🇪 971 32 310ms 30 Jul 2022 379th JayXon 🇺🇸 968 60 2ms 7 Feb 2021 379th HPWiz 🇳🇿 968 60 2ms 15 Apr 2021 379th Lydxn 🇨🇦 968 60 3ms 21 Sep 2021 379th saito-ta 🇯🇵 968 60 3ms 6 Oct 2022 379th JohandeRuiter 🇳🇱 968 60 3ms 18 Oct 2023 379th 09cf 968 60 3ms 22 Nov 2023 379th xsot 🇸🇬 968 60 3ms 12 May 2024 379th rhdqor213 968 60 3ms 15 Nov 2024 379th KasperKivimaeki 🇫🇮 968 60 2ms 27 Dec 2024 388th SirBogman 🇺🇸 967 44 33ms 26 Dec 2019 388th prplz 🇦🇺 967 44 35ms 3 Jan 2020 388th janlelis 967 44 34ms 5 Jan 2020 388th primo-ppcg 🇹🇭 967 44 34ms 5 Oct 2020 388th sisyphus-ppcg 🇦🇺 967 44 34ms 1 Nov 2020 388th rak1507 🇬🇧 967 44 35ms 31 Dec 2020 388th xsot 🇸🇬 967 44 35ms 1 Jan 2021 388th Lydxn 🇨🇦 967 44 36ms 7 Jan 2021 388th GrayJoKing 🇦🇺 967 44 36ms 16 Feb 2021 388th JayXon 🇺🇸 967 44 35ms 26 Feb 2021 388th Shanethegamer 🇺🇸 967 44 34ms 10 May 2021 388th gilufin 967 44 36ms 30 May 2021 388th ovs-code 🇩🇪 967 44 34ms 24 Jun 2021 First Prev 321–400 of 5,521 Next Last