The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Arabic to Roman 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 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 Chars Time Submitted 79th ahmetdemirag 🇨🇾 615 143 21ms 9 Mar 2025 82nd TFeld00 🇩🇰 611 144 52ms 21 Apr 2022 82nd jared-hughes 611 144 20ms 14 Mar 2023 82nd bzijlema 🇳🇱 611 144 45ms 25 Oct 2025 85th tpaxman 🇨🇦 607 145 19ms 17 Dec 2020 85th rowechenzhong 607 145 25ms 26 Nov 2021 87th dyc3 603 146 30ms 27 Jul 2020 87th Augigogigi 603 146 23ms 28 Jul 2020 87th BrunoVisnadi 🇧🇷 603 146 19ms 26 Sep 2025 87th Lv0Sys 🇵🇱 603 146 27ms 6 hours ago 91st davecame 599 147 23ms 27 Mar 2024 92nd luftj 595 148 32ms 23 Apr 2020 92nd Stockoh 🇫🇷 595 148 35ms 5 May 2023 92nd janbehrens 🇩🇪 595 148 22ms 17 Jun 2023 92nd edsrzf 🇳🇿 595 148 21ms 22 Jul 2025 96th betaveros 591 149 19ms 2 Jan 2023 96th sultan 591 149 1,835ms 9 Mar 2024 98th daedals 587 150 19ms 12 Jun 2019 98th abailey2020 🇺🇸 587 150 21ms 13 Dec 2020 100th mauro-1 🇮🇹 583 151 21ms 19 Aug 2021 100th prplz 🇦🇺 583 151 1,013ms 5 Oct 2021 100th knutae 🇳🇴 583 151 19ms 30 Nov 2021 100th shelerr 583 151 20ms 4 Jul 2023 100th LandonWeng 583 151 19ms 30 Sep 2025 105th NewDefectus 🇮🇱 579 152 19ms 8 Oct 2021 105th stefangimmillaro 579 152 32ms 26 Dec 2022 105th tsidwick 579 152 19ms 20 Dec 2023 105th gallium-gonzollium 579 152 31ms 2 Nov 2024 105th blaztoma 🇱🇹 579 152 18ms 11 Oct 2025 110th lynn 575 153 834ms 4 Mar 2021 110th test-user1337 575 153 20ms 29 Aug 2023 112th nullie 571 154 28ms 7 Jun 2022 113th anonymaew 568 155 19ms 19 Aug 2023 113th mathb0y512 568 155 19ms 11 Jan 2024 115th OllieBoyne 🇬🇧 564 156 24ms 27 Jan 2021 115th chartung17 564 156 18ms 1 Jan 2024 115th ZorblaxV 564 156 19ms 10 Jan 2025 118th yanjs 561 157 20ms 30 Sep 2021 119th inventshah 557 158 23ms 24 Jan 2023 119th mediocr3 557 158 22ms 19 Jul 2023 119th Mabeloid 🇳🇴 557 158 21ms 17 Sep 2024 119th andrewjc2000 557 158 19ms 10 Jul 2025 123rd PiterAnnema 553 159 27ms 30 Aug 2020 123rd StefanHabel 🇨🇦 553 159 23ms 11 Nov 2022 123rd stacksparrow4 553 159 21ms 29 Aug 2023 126th AGoyet 547 161 20ms 26 Jul 2022 126th NDR0216 🇹🇼 547 161 20ms 4 Jul 2024 126th zhaohm14 547 161 21ms 6 Jun 2025 129th LouisRustenholz 543 162 48ms 23 Dec 2021 129th tobyLovick 543 162 21ms 7 Dec 2023 131st M4rc0g1 540 163 20ms 22 Nov 2025 132nd mbittner20 537 164 20ms 27 May 2023 132nd iliaspapa 537 164 24ms 10 days ago 134th YoungjuneKwon 533 165 23ms 19 Dec 2018 134th neihousaigaai 533 165 20ms 6 Oct 2024 134th Deedogg 533 165 28ms 30 Oct 2025 137th ludwig-n 527 167 22ms 6 Apr 2021 137th Starwort 🇬🇧 527 167 22ms 4 Dec 2022 139th jfallon1997 524 168 28ms 15 Aug 2022 139th mathisfun271 524 168 25ms 16 Dec 2023 141st SniperSmiley 🇺🇸 521 169 19ms 29 Jun 2022 142nd Moltres-Galar 🇺🇦 518 170 22ms 28 May 2025 143rd TobyBoyne 🇬🇧 515 171 36ms 26 Feb 2021 143rd amollberg 🇸🇪 515 171 21ms 18 Jan 2022 143rd wuduculfre 515 171 24ms 29 Jul 2025 143rd solisolu 515 171 23ms 17 Oct 2025 147th minus7 512 172 21ms 24 Feb 2018 147th cubed-guy 512 172 22ms 2 Nov 2022 147th adamnielson42 🇺🇸 512 172 20ms 7 Dec 2023 147th CutSandstone 512 172 18ms 4 Jul 2024 151st skps2010 509 173 20ms 31 Dec 2018 151st yokasuretsu 509 173 21ms 14 Jan 2025 153rd MaxElf999 506 174 26ms 29 Sep 2022 154th wrose100 503 175 22ms 9 Apr 2022 154th rschwa6308 🇺🇸 503 175 59ms 18 Aug 2023 154th yoavjs 503 175 18ms 1 Apr 2025 157th mossprescott 500 176 18ms 24 Jun 2019 157th NanduBC 500 176 21ms 17 Mar 2021 157th za3k 500 176 25ms 11 Oct 2022 157th msbranicky 500 176 22ms 27 Jul 2023 First Prev 81–160 of 501 Next Last
