The Calendar hole will go live in approximately 5 days. Why not try and solve it ahead of time?
Foo Fizz Buzz Bar 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 radarek 🇵🇱 1,000 64 59ms 4 Dec 2024 2nd Lydxn 🇨🇦 985 65 49ms 2 Apr 2022 2nd pardouin 🇫🇷 985 65 35ms 13 Oct 2025 4th JayXon 🇺🇸 970 66 40ms 23 Nov 2021 4th janlelis 970 66 43ms 23 Nov 2021 4th nwellnhof 🇩🇪 970 66 42ms 28 Dec 2021 4th Steffan153 🇫🇮 970 66 68ms 1 Jan 2023 8th olivermrose 🇺🇸 955 67 41ms 23 Nov 2021 8th sean-niemann 🇺🇸 955 67 39ms 14 Aug 2025 10th MeWhenI 🇻🇦 928 69 71ms 16 Aug 2022 11th anter69 🇭🇺 914 70 42ms 2 Apr 2024 11th tatzyr 🇯🇵 914 70 38ms 13 Nov 2024 13th Shanethegamer 🇺🇸 901 71 41ms 30 Dec 2021 13th SirBogman 🇺🇸 901 71 43ms 21 May 2022 15th olleicua 🇺🇸 889 72 40ms 13 Feb 2024 16th DialFrost 🇸🇬 842 76 45ms 27 Jan 2023 17th KL-Lru 831 77 41ms 29 Dec 2022 18th KatieLG 🇬🇧 821 78 37ms 2 Oct 2025 19th lynn 810 79 40ms 2 Feb 2022 20th emgordon154 800 80 54ms 19 Dec 2021 20th sisyphus-ppcg 🇦🇺 800 80 42ms 30 Dec 2022 22nd ovs-code 🇩🇪 790 81 37ms 22 Oct 2023 23rd GrayJoKing 🇦🇺 753 85 42ms 3 Nov 2022 24th Natanaelel 🇸🇪 744 86 40ms 22 Nov 2021 25th OhmNomNom 736 87 39ms 14 Oct 2022 25th Haksell 🇦🇶 736 87 43ms 22 Feb 2023 27th stefangimmillaro 727 88 46ms 21 Nov 2021 27th Andriamanitra 🇫🇮 727 88 47ms 20 Jul 2022 27th aksyristos 727 88 43ms 11 Oct 2022 27th Yewzir 🇧🇪 727 88 41ms 7 Feb 2024 31st tkr-sh 🇰🇵 719 89 40ms 28 Jun 2022 31st jared-hughes 719 89 40ms 8 Sep 2022 33rd yzhs 🇩🇪 696 92 43ms 16 Jun 2022 34th Irratix 🇳🇱 688 93 45ms 27 Jun 2022 35th adoxography 674 95 43ms 18 Dec 2021 35th Lv0Sys 🇵🇱 674 95 48ms 20 days ago 37th max-barstow 667 96 42ms 6 Sep 2022 38th shellbertt 🇨🇦 660 97 44ms 6 Dec 2021 38th aaronze 🇦🇺 660 97 39ms 17 Sep 2023 40th aydamak 653 98 39ms 7 May 2024 41st ls-samer-abuthaher 646 99 51ms 7 Oct 2022 41st r-iwakata 646 99 39ms 4 Jan 2023 41st BREMAUCY 🇫🇷 646 99 42ms 9 May 2023 41st lacrosse 646 99 37ms 27 days ago 45th KrausRaus 🇺🇸 634 101 39ms 20 Dec 2021 45th janbehrens 🇩🇪 634 101 46ms 27 Nov 2022 45th dokutan 634 101 38ms 23 Apr 2025 48th eldritchconundrum 621 103 39ms 31 Oct 2022 49th purp 582 110 37ms 9 Aug 2022 49th vluyzvg 582 110 43ms 17 Feb 2023 49th snoozingnewt 🇨🇦 582 110 42ms 16 Oct 2025 52nd HallMatthew314 571 112 48ms 5 Dec 2021 52nd ComputerKWasTaken 🇺🇸 571 112 38ms 5 Jul 2024 54th TheZwierzLF 🇵🇱 500 128 37ms 4 days ago 55th Ralac07 🇦🇺 474 135 42ms 14 Jun 2024 56th shibacho 🇯🇵 444 144 44ms 1 Dec 2021 57th beergit 390 164 39ms 7 Aug 2024 58th msbranicky 383 167 45ms 8 Sep 2023 59th StronkCheese 🇺🇸 370 173 40ms 29 Jan 2023 60th christensendaniel 328 195 39ms 14 May 2024 61st lightgeb 198 324 47ms 27 Oct 2023 62nd UnusedConfetti 168 381 41ms 5 Mar 2024 63rd HumanoidCPU 22 2,883 35ms 26 Dec 2024 64th JRaspass 🇬🇧 11 5,724 37ms 21 Nov 2021 64th KatieLG-Transpiler 🇬🇧 11 5,724 39ms 24 Jun 2022 64th retrohun 11 5,724 38ms 27 Dec 2022 64th Mabeloid 🇳🇴 11 5,724 40ms 18 Sep 2024 64th CaedenHarper 🇨🇦 11 5,724 36ms 16 Aug 2025 1–68 of 68
