The Calendar hole will go live in approximately 11 days. Why not try and solve it ahead of time?
Rule 110 in Ruby 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 1st primo-ppcg 🇹🇭 1,000 56 39ms 31 Aug 2018 1st pardouin 🇫🇷 1,000 56 38ms 21 Aug 2025 3rd Lydxn 🇨🇦 982 57 48ms 22 Mar 2021 3rd JayXon 🇺🇸 982 57 35ms 18 Jun 2021 3rd sisyphus-ppcg 🇦🇺 982 57 47ms 9 Nov 2021 3rd Steffan153 🇫🇮 982 57 40ms 21 Feb 2023 3rd sean-niemann 🇺🇸 982 57 36ms 21 Feb 2023 3rd stefangimmillaro 982 57 50ms 21 Feb 2023 3rd ovs-code 🇩🇪 982 57 35ms 2 Apr 2023 3rd GrayJoKing 🇦🇺 982 57 34ms 3 Apr 2023 3rd nwellnhof 🇩🇪 982 57 35ms 26 Jul 2023 3rd inventshah 982 57 34ms 20 Oct 2023 3rd DialFrost 🇸🇬 982 57 49ms 28 Nov 2023 14th orthoplex 🇨🇽 966 58 46ms 31 Mar 2022 14th Lv0Sys 🇵🇱 966 58 35ms 18 days ago 16th Natanaelel 🇸🇪 889 63 41ms 29 Jul 2023 17th SirBogman 🇺🇸 875 64 38ms 28 Nov 2022 17th MeWhenI 🇻🇦 875 64 43ms 25 Jul 2023 17th emgordon154 875 64 45ms 3 Aug 2025 20th NewDefectus 🇮🇱 812 69 38ms 18 Nov 2021 21st jared-hughes 800 70 39ms 10 Sep 2022 21st janlelis 800 70 58ms 21 Sep 2024 23rd Irratix 🇳🇱 789 71 37ms 21 Apr 2022 24th prplz 🇦🇺 767 73 68ms 1 Jan 2020 25th Shanethegamer 🇺🇸 727 77 49ms 27 Feb 2023 26th anter69 🇭🇺 718 78 40ms 25 Jan 2023 27th olleicua 🇺🇸 691 81 46ms 12 Feb 2024 28th Haksell 🇦🇶 683 82 41ms 22 Feb 2023 29th hiddicop 🇸🇪 675 83 41ms 30 Jan 2021 30th tatzyr 🇯🇵 609 92 67ms 10 Dec 2024 31st proton 🇩🇪 602 93 39ms 10 Jun 2020 31st razetime 602 93 41ms 25 Jan 2021 31st olivermrose 🇺🇸 602 93 43ms 24 Oct 2021 31st scpchicken 🇵🇼 602 93 41ms 22 Apr 2023 35th aaronze 🇦🇺 571 98 34ms 20 Sep 2023 36th akshatj27 🇦🇶 560 100 37ms 12 Dec 2022 37th Waffle3z 523 107 41ms 22 Jan 2021 37th KatieLG 🇬🇧 523 107 50ms 11 Apr 2022 39th n1LS 514 109 62ms 27 Sep 2019 40th neel11235813 496 113 41ms 17 Mar 2023 41st boxjelly 483 116 44ms 12 Feb 2021 42nd yokasuretsu 463 121 44ms 11 Jul 2018 42nd TheZwierzLF 🇵🇱 463 121 80ms 34 hours ago 44th jaredcrystal 🇺🇸 293 191 48ms 14 Dec 2020 45th msbranicky 284 197 40ms 12 Sep 2023 46th od86 204 275 57ms 27 days ago 47th dokutan 55 1,010 37ms 6 Oct 2024 48th HumanoidCPU 7 7,950 38ms 26 Dec 2024 49th retrohun 6 10,105 37ms 21 Dec 2018 49th JRaspass 🇬🇧 6 10,105 50ms 17 Jan 2020 49th KatieLG-Transpiler 🇬🇧 6 10,105 35ms 24 Jun 2022 49th Mabeloid 🇳🇴 6 10,105 52ms 22 Sep 2024 49th CaedenHarper 🇨🇦 6 10,105 35ms 16 Aug 2025 1–53 of 53
