The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Roman to Arabic in all languages 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 240th sean-niemann 🇺🇸 880 141 279ms 7 Nov 2023 240th Steffan153 🇫🇮 880 141 272ms 26 Jul 2024 243rd tomtheisen 🇺🇸 879 86 15ms 27 Oct 2020 243rd AlephSquirrel 879 86 15ms 15 Feb 2023 243rd stefangimmillaro 879 86 19ms 15 Sep 2024 246th primo-ppcg 🇹🇭 879 90 285ms 25 Apr 2025 247th rboath 878 39 86ms 23 Jan 2025 248th JayXon 🇺🇸 878 109 1,347ms 2 Nov 2023 249th sean-niemann 🇺🇸 877 73 1,054ms 13 Sep 2025 250th SirBogman 🇺🇸 877 82 20ms 20 Nov 2022 251st inventshah 876 93 4ms 25 Jan 2023 252nd Steffan153 🇫🇮 876 122 24ms 28 Nov 2022 252nd IanUtley 876 122 49ms 27 Apr 2024 254th JayXon 🇺🇸 876 129 176ms 25 Sep 2025 255th GrayJoKing 🇦🇺 875 87 52ms 1 Nov 2023 256th Shanethegamer 🇺🇸 874 74 457ms 16 Jan 2024 256th GrayJoKing 🇦🇺 874 74 428ms 23 Jul 2024 256th duckyluuk 🇳🇱 874 74 374ms 28 Aug 2024 259th nwellnhof 🇩🇪 874 77 24ms 1 Aug 2022 260th radarek 🇵🇱 873 55 74ms 26 Dec 2024 260th JayXon 🇺🇸 873 55 76ms 27 Dec 2024 260th pardouin 🇫🇷 873 55 80ms 11 Aug 2025 263rd edsrzf 🇳🇿 873 87 133ms 3 Feb 2025 264th DialFrost 🇸🇬 873 122 5ms 5 Nov 2024 265th Steffan153 🇫🇮 872 88 126ms 24 May 2024 266th Steffan153 🇫🇮 872 95 9ms 31 Oct 2023 267th Lydxn 🇨🇦 872 103 419ms 12 Mar 2023 268th dvargas46 🇺🇸 871 90 281ms 23 Jan 2023 269th DialFrost 🇸🇬 870 67 1,072ms 10 Oct 2024 270th sean-niemann 🇺🇸 870 103 14ms 8 Apr 2025 271st ovs-code 🇩🇪 869 87 13ms 20 Nov 2024 272nd btnlq 869 123 27ms 28 Nov 2021 273rd primo-ppcg 🇹🇭 868 114 39ms 20 Jun 2022 274th primo-ppcg 🇹🇭 868 139 42ms 17 Apr 2022 275th Yax42 🇫🇷 867 90 405ms 1 Aug 2025 275th namelessiw 867 90 419ms 19 Aug 2025 277th nwellnhof 🇩🇪 867 143 277ms 17 Aug 2021 277th emplv 🇱🇻 867 143 342ms 31 Oct 2023 277th stefangimmillaro 867 143 293ms 7 Nov 2023 280th inventshah 866 116 72ms 25 Jan 2023 281st MeWhenI 🇻🇦 866 123 7ms 11 Sep 2022 281st Shanethegamer 🇺🇸 866 123 7ms 11 Sep 2022 281st sean-niemann 🇺🇸 866 123 7ms 8 Oct 2024 284th Yewzir 🇧🇪 865 74 1,026ms 15 Nov 2025 285th Steffan153 🇫🇮 865 88 52ms 20 Feb 2023 286th scpchicken 🇵🇼 863 81 69ms 4 May 2022 287th edsrzf 🇳🇿 863 96 9ms 29 Jun 2025 288th Shanethegamer 🇺🇸 863 106 104ms 24 May 2025 289th kumavale 863 131 180ms 26 days ago 290th m-tkach 🇺🇦 863 146 32ms 31 Oct 2023 291st Yewzir 🇧🇪 862 75 460ms 10 Jun 2024 291st KatieLG 🇬🇧 862 75 381ms 28 Oct 2024 291st dokutan 862 75 390ms 21 Feb 2025 294th stefangimmillaro 862 140 42ms 7 Nov 2023 295th primo-ppcg 🇹🇭 861 144 280ms 30 Apr 2020 295th DialFrost 🇸🇬 861 144 256ms 5 Jun 2024 297th DialFrost 🇸🇬 860 108 102ms 17 days ago 298th dokutan 859 50 183ms 27 Aug 2024 299th tayloia 🇬🇧 859 88 14ms 18 Jul 2023 299th kirjavascript 859 88 14ms 13 Feb 2025 301st stefangimmillaro 859 92 106ms 30 Oct 2023 301st kg583 🇺🇸 859 92 3,785ms 9 May 2025 303rd Steffan153 🇫🇮 859 142 52ms 6 Jul 2024 304th Shanethegamer 🇺🇸 858 83 526ms 17 Dec 2022 305th ScottHamper 858 91 381ms 23 Feb 2022 305th MeWhenI 🇻🇦 858 91 377ms 26 Jul 2023 307th Lydxn 🇨🇦 857 56 70ms 10 Oct 2021 307th sean-niemann 🇺🇸 857 56 61ms 1 Jul 2022 307th MeWhenI 🇻🇦 857 56 65ms 3 Aug 2022 307th Steffan153 🇫🇮 857 56 86ms 28 Nov 2022 311th RYNO8 856 84 20ms 3 Sep 2021 311th lifthrasiir 🇰🇷 856 84 47ms 20 Nov 2024 311th plcc0 856 84 20ms 2 May 2025 314th MeWhenI 🇻🇦 856 117 5ms 20 Jul 2023 315th MeWhenI 🇻🇦 853 34 96ms 24 Aug 2022 316th bstrat 852 43 6ms 4 Sep 2024 317th Steffan153 🇫🇮 851 148 31ms 31 Oct 2023 317th Shanethegamer 🇺🇸 851 148 31ms 31 Oct 2023 319th canissimia 🇦🇶 851 183 18ms 29 Nov 2023 320th Shanethegamer 🇺🇸 850 89 13ms 29 Nov 2021 First Prev 241–320 of 1,448 Next Last