The Calendar hole will go live in approximately 4 days. Why not try and solve it ahead of time?
brainfuck 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 sisyphus-ppcg 🇦🇺 1,000 63 39ms 12 Jun 2024 2nd janlelis 840 75 40ms 21 Sep 2024 3rd Lydxn 🇨🇦 829 76 52ms 29 Jan 2022 3rd JayXon 🇺🇸 829 76 50ms 12 Jun 2024 5th pardouin 🇫🇷 818 77 50ms 1 Sep 2025 6th Steffan153 🇫🇮 808 78 75ms 29 Feb 2024 7th prplz 🇦🇺 797 79 40ms 7 Jun 2020 8th Shanethegamer 🇺🇸 759 83 46ms 21 Oct 2021 9th DialFrost 🇸🇬 750 84 80ms 30 Jan 2023 9th anter69 🇭🇺 750 84 71ms 19 Mar 2024 11th SirBogman 🇺🇸 741 85 44ms 26 Dec 2023 12th 4hg 🇺🇸 708 89 65ms 11 Dec 2022 13th snoozingnewt 🇨🇦 700 90 48ms 20 Oct 2025 14th GrayJoKing 🇦🇺 692 91 49ms 23 Jul 2024 15th tatzyr 🇯🇵 685 92 44ms 12 Feb 2025 16th plcc0 677 93 44ms 10 Oct 2025 17th KatieLG 🇬🇧 670 94 49ms 2 Oct 2025 18th Natanaelel 🇸🇪 656 96 40ms 14 Oct 2021 19th olleicua 🇺🇸 630 100 40ms 15 Jan 2024 20th nwellnhof 🇩🇪 618 102 45ms 2 Jan 2022 21st UladzimirSukharukau 606 104 42ms 15 Sep 2021 22nd ovs-code 🇩🇪 594 106 51ms 23 Jul 2024 23rd primo-ppcg 🇹🇭 589 107 48ms 1 Nov 2021 24th MeWhenI 🇻🇦 583 108 45ms 30 Dec 2023 24th stefangimmillaro 583 108 39ms 26 Dec 2024 26th olivermrose 🇺🇸 573 110 47ms 14 Sep 2021 27th proton 🇩🇪 534 118 39ms 9 Jun 2020 28th jared-hughes 492 128 40ms 12 Sep 2022 28th jstanley0 492 128 39ms 18 Jan 2024 30th Lv0Sys 🇵🇱 481 131 43ms 27 days ago 31st Andriamanitra 🇫🇮 477 132 38ms 9 Oct 2023 32nd emgordon154 463 136 51ms 14 May 2025 33rd CaedenHarper 🇨🇦 450 140 46ms 7 Sep 2025 34th TheZwierzLF 🇵🇱 444 142 37ms 78 mins ago 35th llwwns 441 143 39ms 1 May 2023 36th ConorOBrien-Foxx 429 147 45ms 10 Apr 2018 36th Waffle3z 429 147 53ms 12 Oct 2020 38th yzhs 🇩🇪 417 151 54ms 20 Jul 2022 39th shraiwi 391 161 38ms 5 Dec 2019 40th hrrs01 384 164 40ms 26 Sep 2018 41st meenie 371 170 38ms 24 Jan 2021 42nd biinari 368 171 40ms 13 Aug 2020 43rd yokasuretsu 356 177 44ms 16 Apr 2018 44th rvs314 354 178 42ms 21 Apr 2022 45th segiddins 333 189 38ms 24 Aug 2018 46th Haksell 🇦🇶 325 194 42ms 22 Feb 2023 47th jaredcrystal 🇺🇸 320 197 43ms 14 Dec 2020 47th aaronze 🇦🇺 320 197 48ms 17 Sep 2023 49th omegahm 301 209 54ms 1 Sep 2023 50th schachmattmatt 247 255 145ms 29 Sep 2021 50th beirigo 🇧🇷 247 255 139ms 6 Nov 2025 52nd adoxography 229 275 45ms 22 Jul 2018 53rd graft 216 292 42ms 22 Mar 2018 54th DaCuteRaccoon 84 751 40ms 30 Dec 2022 1–54 of 54
