The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Arabic to Roman 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 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 717th StardustGogeta 670 180 21ms 18 Aug 2023 717th Andrey2001 670 180 29ms 24 days ago 723rd targrik 669 233 290ms 3 Jul 2025 724th Alex-x90 🇺🇸 668 153 10ms 15 May 2023 725th Yax42 🇫🇷 668 178 420ms 20 Jun 2025 726th CaedenHarper 🇨🇦 667 156 687ms 29 Oct 2025 727th Fishron 667 181 21ms 20 Nov 2022 727th nstearns96 🇬🇧 667 181 26ms 29 Nov 2022 727th pde-bakk 🇳🇱 667 181 23ms 23 Oct 2023 727th elgan65536 667 181 21ms 1 Apr 2024 727th EnTerr 667 181 23ms 8 Sep 2024 727th Josemnz 667 181 22ms 4 May 2025 727th Flekay 🇩🇪 667 181 23ms 10 Jul 2025 734th stackotter 666 227 106ms 29 May 2023 735th KatieLG 🇬🇧 665 138 15ms 16 Nov 2023 736th Andriamanitra 🇫🇮 664 123 59ms 1 Sep 2022 737th alemelis 664 136 994ms 19 Sep 2024 738th Jonatan6 🇩🇰 664 203 101ms 3 Aug 2023 739th Alex-x90 🇺🇸 663 182 48ms 13 Feb 2023 739th cefqrn 663 182 23ms 20 May 2023 739th jeff-at-tamer-dot-codes 🇺🇸 663 182 22ms 8 Sep 2023 739th fgrosshans 🇫🇷 663 182 23ms 16 Jul 2024 743rd SirBogman 🇺🇸 663 375 623ms 23 Nov 2022 744th Frowny 660 67 9ms 10 Jan 2022 745th MeWhenI 🇻🇦 660 249 168ms 13 Nov 2022 746th olleicua 🇺🇸 659 124 83ms 19 Jan 2024 747th darkoboshkovski 659 155 9ms 12 Jun 2023 748th skps2010 659 183 20ms 31 Dec 2018 748th asheeri 659 183 22ms 14 Aug 2021 748th TaserTheFox 🇺🇸 659 183 26ms 8 May 2023 751st Mabeloid 🇳🇴 658 158 573ms 17 Sep 2024 752nd p-vf 🇨🇭 657 181 403ms 21 Nov 2021 752nd Shanethegamer 🇺🇸 657 181 419ms 4 Apr 2023 754th Shanethegamer 🇺🇸 657 218 115ms 11 Sep 2022 755th annaproxy 657 222 339ms 1 Aug 2022 756th Shanethegamer 🇺🇸 657 237 316ms 4 Apr 2023 757th adoxography 656 184 23ms 10 Oct 2019 757th mokymok 🇺🇸 656 184 25ms 8 Dec 2021 757th jakobkordez 🇸🇮 656 184 20ms 17 Oct 2022 757th yishayv 656 184 20ms 23 Jan 2023 757th Bmrl7 656 184 27ms 17 Feb 2024 757th jatloe 656 184 18ms 5 Oct 2024 757th CommandLeo 🇮🇹 656 184 36ms 25 days ago 764th MichalMarsalek 🇨🇿 656 189 452ms 22 Jan 2023 764th Shanethegamer 🇺🇸 656 189 642ms 21 Mar 2023 764th DestyNova 🇮🇪 656 189 447ms 15 Apr 2025 767th jared-hughes 655 97 44ms 16 Apr 2022 768th emgordon154 655 140 21ms 2 Dec 2021 768th Lv0Sys 🇵🇱 655 140 14ms 21 days ago 770th prestosilver 🇺🇸 655 156 11ms 27 days ago 771st stefangimmillaro 654 182 438ms 17 Sep 2024 772nd Shanethegamer 🇺🇸 653 163 143ms 24 May 2025 773rd nsprd 652 185 23ms 19 Jan 2024 773rd DxSper 652 185 27ms 16 Feb 2024 773rd driri85 652 185 27ms 16 Feb 2024 773rd OCNeve 652 185 22ms 18 Jun 2024 773rd croc54 652 185 23ms 31 Jan 2025 773rd Alpha9584 652 185 20ms 20 Mar 2025 773rd Hemanthred2005 652 185 21ms 3 May 2025 773rd GodlyProgrammer1 652 185 24ms 19 days ago 781st kmathis22 652 222 560ms 10 days ago 782nd jared-hughes 651 141 13ms 10 Sep 2021 782nd Andrey-Plotnikov 651 141 12ms 25 Oct 2024 784th Jonatan6 🇩🇰 651 157 11ms 4 Aug 2023 785th BlankSpruce 651 207 475ms 26 Aug 2022 786th HumanoidCPU 650 160 547ms 31 Oct 2024 786th KatieLG 🇬🇧 650 160 538ms 19 Apr 2025 788th Shanethegamer 🇺🇸 649 139 551ms 8 Jan 2022 789th TheAristos 649 186 28ms 21 Oct 2019 789th CorporalCrawdad 649 186 20ms 3 Oct 2024 791st HumanoidCPU 649 223 595ms 8 Nov 2025 792nd lynn 648 185 27ms 23 Nov 2021 793rd FlyingPenguin223 647 198 6ms 30 Nov 2024 794th uttumuttu 🇫🇮 646 142 24ms 4 Jan 2022 794th iliazeus 646 142 16ms 3 Sep 2022 794th LukeBridges 🇬🇧 646 142 15ms 28 Oct 2022 797th Shanethegamer 🇺🇸 646 147 36ms 5 Nov 2022 798th TheZwierzLF 🇵🇱 646 161 775ms 5 days ago 799th DialFrost 🇸🇬 645 140 654ms 25 May 2024 800th Yewzir 🇧🇪 645 165 174ms 13 Sep 2023 First Prev 721–800 of 1,863 Next Last