The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Divisors in Python 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 515th krcs 🇵🇱 857 63 10ms 29 Dec 2021 515th uttumuttu 🇫🇮 857 63 11ms 5 Jan 2022 515th amollberg 🇸🇪 857 63 10ms 5 Jan 2022 515th fpringle 857 63 10ms 25 Mar 2022 515th DaCuteRaccoon 857 63 10ms 7 Apr 2022 515th ademdj19 857 63 15ms 12 Apr 2022 515th VilBoub 857 63 10ms 20 Apr 2022 515th Trunksistor 🇫🇷 857 63 11ms 21 Apr 2022 515th cafehaine 🇫🇷 857 63 10ms 1 May 2022 515th martinnorling 🇸🇪 857 63 10ms 23 May 2022 515th AdamHe17 857 63 10ms 31 May 2022 515th cb597 857 63 15ms 13 Jun 2022 515th juan-cazalvilla 857 63 11ms 26 Jun 2022 515th jfallon1997 857 63 11ms 8 Aug 2022 515th AGoyet 857 63 10ms 30 Aug 2022 515th AodhanDalton 857 63 10ms 2 Sep 2022 515th vishwathg 857 63 14ms 24 Sep 2022 515th aiarzhantsev 857 63 10ms 16 Oct 2022 515th 0-4849 857 63 18ms 28 Oct 2022 515th andersk 🇺🇸 857 63 11ms 30 Oct 2022 515th loganmacdougall 🇨🇦 857 63 10ms 1 Nov 2022 515th trist224 🇫🇷 857 63 15ms 9 Nov 2022 515th andre-lameirinhas 🇵🇹 857 63 10ms 22 Nov 2022 515th CheeseCake628 🇳🇴 857 63 10ms 9 Jan 2023 515th Skallos-s 857 63 10ms 25 Jan 2023 515th hellwue 857 63 10ms 8 Feb 2023 515th 5ug4md 857 63 10ms 12 Feb 2023 515th NoahRiviere 857 63 9ms 19 Feb 2023 515th m3nt0ras 🇬🇷 857 63 14ms 25 Feb 2023 515th grave367 857 63 11ms 5 Mar 2023 515th klixel 🇨🇦 857 63 14ms 4 Jun 2023 515th bartsowka2000 857 63 10ms 4 Jul 2023 515th msbranicky 857 63 10ms 5 Jul 2023 515th Educorreia932 857 63 10ms 14 Jul 2023 515th vgamula 🇺🇦 857 63 11ms 15 Aug 2023 515th MiranDaniel 🇨🇿 857 63 10ms 2 Sep 2023 515th RobertHoeh 857 63 10ms 14 Sep 2023 515th AbhilashaTandon 857 63 14ms 21 Sep 2023 515th Command-Master 857 63 10ms 23 Sep 2023 515th DavidHospital 857 63 21ms 24 Sep 2023 515th CameronGBell 857 63 14ms 28 Sep 2023 515th ssbhatt4321 857 63 10ms 14 Oct 2023 515th jagannathhari 857 63 11ms 21 Oct 2023 515th anarconic 857 63 14ms 8 Dec 2023 515th Techdude01 857 63 11ms 21 Dec 2023 515th souvlakias 857 63 10ms 1 Feb 2024 515th Numkin18 857 63 10ms 11 Apr 2024 515th Alex-Huggett 🇬🇧 857 63 11ms 14 Apr 2024 515th resoNathan 857 63 10ms 8 May 2024 515th Languag3 857 63 14ms 15 May 2024 515th gabe-gallegos 857 63 14ms 19 May 2024 515th shreyass-ranganatha 857 63 10ms 28 May 2024 515th ComputerKWasTaken 🇺🇸 857 63 10ms 1 Jun 2024 515th ajuancer 857 63 10ms 7 Aug 2024 515th PyryL 🇫🇮 857 63 11ms 16 Aug 2024 515th Deedogg 857 63 10ms 10 Sep 2024 515th voytxt 🇨🇿 857 63 10ms 20 Sep 2024 515th Mabeloid 🇳🇴 857 63 11ms 23 Sep 2024 515th zlliu246 857 63 10ms 3 Oct 2024 515th gthayden23 857 63 11ms 4 Oct 2024 515th eclyptox 857 63 11ms 13 Oct 2024 515th xyangst 857 63 11ms 18 Oct 2024 515th moustave 857 63 10ms 24 Nov 2024 515th Unknownuserfrommars 857 63 11ms 10 Dec 2024 515th maxgodfrey2004 🇨🇦 857 63 10ms 8 Jan 2025 515th Voltrifrodec 🇸🇰 857 63 11ms 20 Apr 2025 515th ToE42 857 63 13ms 16 May 2025 515th cthierfelder 🇲🇨 857 63 14ms 19 Jun 2025 515th rollsroyce0 857 63 11ms 8 Jul 2025 515th addmai 857 63 11ms 24 Jul 2025 515th saturzay 857 63 10ms 19 Aug 2025 515th shelerr 857 63 16ms 21 Aug 2025 515th 0dyse 857 63 10ms 12 Sep 2025 515th Demonarchet 857 63 10ms 19 Sep 2025 515th nulzo 857 63 11ms 19 Oct 2025 515th DrakeSeteraO 857 63 10ms 28 Oct 2025 515th madeforlosers 857 63 11ms 7 Nov 2025 515th M4rc0g1 857 63 10ms 22 Nov 2025 515th AidanWalter 857 63 11ms 27 Nov 2025 515th Andrey2001 857 63 10ms 1 Feb 2026 First Prev 561–640 of 1,507 Next Last
