The Calendar hole will go live in approximately 5 days. Why not try and solve it ahead of time?
Arabic to Roman in Python 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 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 Minesweeper 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 Minesweeper 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 160th cefqrn 681 182 23ms 20 May 2023 160th jeff-at-tamer-dot-codes 🇺🇸 681 182 22ms 8 Sep 2023 160th fgrosshans 🇫🇷 681 182 23ms 16 Jul 2024 164th skps2010 678 183 20ms 31 Dec 2018 164th asheeri 678 183 22ms 14 Aug 2021 164th TaserTheFox 🇺🇸 678 183 26ms 8 May 2023 164th Pyroan 678 183 22ms 95 mins ago 168th adoxography 674 184 23ms 10 Oct 2019 168th mokymok 🇺🇸 674 184 25ms 8 Dec 2021 168th jakobkordez 🇸🇮 674 184 20ms 17 Oct 2022 168th yishayv 674 184 20ms 23 Jan 2023 168th Bmrl7 674 184 27ms 17 Feb 2024 168th jatloe 674 184 18ms 5 Oct 2024 174th nsprd 670 185 23ms 19 Jan 2024 174th DxSper 670 185 27ms 16 Feb 2024 174th driri85 670 185 27ms 16 Feb 2024 174th OCNeve 670 185 22ms 18 Jun 2024 174th croc54 670 185 23ms 31 Jan 2025 174th Alpha9584 670 185 20ms 20 Mar 2025 174th Hemanthred2005 670 185 21ms 3 May 2025 174th GodlyProgrammer1 670 185 24ms 28 Nov 2025 182nd TheAristos 667 186 28ms 21 Oct 2019 182nd CorporalCrawdad 667 186 20ms 3 Oct 2024 184th rowboat1 663 187 26ms 3 Apr 2021 184th rschwa6308 🇺🇸 663 187 59ms 18 Aug 2023 184th albanian-laundromat 663 187 20ms 24 Apr 2025 184th bogosorter 663 187 38ms 11 Jul 2025 184th celiendonze 🇨🇭 663 187 22ms 7 Nov 2025 189th kevinmchung 660 188 38ms 2 Feb 2018 189th jhfranklin 🇬🇧 660 188 25ms 7 Mar 2021 189th ehulinsky 🇺🇸 660 188 21ms 8 May 2023 189th eiburns 660 188 19ms 3 Oct 2023 189th Just4FunCoder 660 188 38ms 18 Jun 2025 194th ay2718 656 189 28ms 14 Aug 2019 194th Kloppermand 🇩🇰 656 189 23ms 10 Jun 2020 194th martinnorling 🇸🇪 656 189 22ms 3 Mar 2022 194th ThijsLuttikhuis 656 189 26ms 3 Mar 2024 194th tri1212 🇻🇳 656 189 557ms 30 Jun 2024 194th emgordon154 656 189 31ms 24 Sep 2024 194th Mathrew2012 656 189 19ms 24 May 2025 201st LogicalJoe 653 190 34ms 24 May 2023 201st moustave 653 190 32ms 7 Apr 2025 203rd garrisonhh 649 191 22ms 21 Nov 2020 203rd geofft 649 191 42ms 10 Dec 2020 203rd CedricGebistorf 649 191 19ms 18 Feb 2022 203rd Educorreia932 649 191 24ms 23 Jun 2022 203rd Ripick 649 191 25ms 6 May 2023 203rd anarconic 649 191 490ms 14 Dec 2023 203rd jeff-re 649 191 20ms 6 May 2025 210th hellwue 646 192 22ms 22 Nov 2023 210th ballaire 646 192 40ms 27 Jan 2024 212th evanrittner 642 193 24ms 9 Mar 2019 212th argusdusty 🇺🇸 642 193 35ms 31 Dec 2020 212th Bonjour27891 🇻🇳 642 193 39ms 13 Mar 2022 212th AtengChen 642 193 23ms 16 Aug 2024 212th JunkIce 642 193 23ms 4 Nov 2024 217th Psirving 639 194 25ms 31 Jul 2020 217th j-Ewan 639 194 22ms 14 Feb 2022 217th Dandandooo 639 194 19ms 19 Apr 2025 220th P-Quentin 🇫🇷 636 195 31ms 5 Aug 2022 220th BREMAUCY 🇫🇷 636 195 22ms 4 Feb 2023 220th cros107 🇦🇺 636 195 25ms 7 Jun 2023 220th m42km 636 195 22ms 14 Jan 2024 220th WillConker 636 195 24ms 10 Aug 2024 220th Troon 636 195 21ms 19 Aug 2025 226th wilkij1 633 196 17ms 16 Jun 2018 226th lukasthaler 633 196 28ms 9 Sep 2020 226th asadullayev 633 196 19ms 4 Mar 2021 226th geooff 633 196 21ms 11 Sep 2023 226th RaBa21 🇭🇺 633 196 21ms 17 Jul 2025 226th BlankSpruce 633 196 26ms 31 Aug 2025 232nd BrenSchaap 629 197 20ms 21 Oct 2021 232nd aksyristos 629 197 23ms 27 Jan 2023 232nd ABC00012345 629 197 22ms 1 May 2024 232nd michaelmgreer 629 197 21ms 9 Oct 2025 236th zdzc 626 198 20ms 26 Mar 2018 236th Florian-Mt 626 198 28ms 14 Nov 2023 236th l-donovan 626 198 22ms 6 Feb 2024 239th lelbal 623 199 17ms 7 Aug 2025 239th qpwoeirut 623 199 20ms 14 Aug 2025 First Prev 161–240 of 502 Next Last