The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Foo Fizz Buzz Bar in Python 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 551st ahmedshifathedataengineer 600 110 11ms 19 Sep 2025 562nd mathb0y512 595 111 12ms 29 Nov 2022 562nd BLD933 🇲🇦 595 111 10ms 1 Sep 2023 562nd HelloYuiYui 595 111 11ms 31 Oct 2023 562nd Igyeom 🇰🇷 595 111 18ms 5 Feb 2024 566th LeeCamp 589 112 10ms 11 Dec 2021 566th andrewgopher 589 112 11ms 25 Jun 2022 566th avinashv 589 112 10ms 12 Nov 2022 566th Webatron11 589 112 11ms 24 Nov 2022 566th S-Ruban 589 112 12ms 25 Feb 2023 566th Florian-Mt 589 112 11ms 26 Sep 2023 566th sli-Lut 589 112 10ms 11 Oct 2023 566th b20fuji 589 112 11ms 18 Oct 2023 566th PyryL 🇫🇮 589 112 11ms 21 Aug 2024 575th ArmaanAS 584 113 19ms 28 Nov 2021 575th oomido 584 113 10ms 7 Sep 2022 575th DayDun 🇸🇪 584 113 12ms 21 Jan 2023 575th djtroyal 584 113 11ms 13 Feb 2023 575th msbranicky 584 113 18ms 5 Jul 2023 575th khavik 584 113 12ms 18 May 2024 575th MamoonUddin 584 113 11ms 3 Dec 2024 575th Hyperoplex145 584 113 11ms 10 Nov 2025 583rd Andrey135296 579 114 11ms 3 Jan 2022 583rd Liastrae 579 114 11ms 22 Aug 2022 583rd Nicronmil 579 114 11ms 25 Nov 2022 583rd aliberro39109 579 114 12ms 1 Sep 2025 587th dzshn 574 115 17ms 17 Aug 2022 587th dillon-duncando 574 115 10ms 5 Oct 2022 587th tails618 574 115 19ms 1 Dec 2022 587th isaiah0311 574 115 12ms 7 Feb 2023 587th Azearia 574 115 11ms 23 Oct 2023 587th mishak-sys 574 115 11ms 24 Feb 2025 587th WillowWispy 574 115 11ms 16 Mar 2025 587th Cube14yt 574 115 20ms 12 Oct 2025 595th TobyBoyne 🇬🇧 569 116 12ms 28 Jan 2022 595th HallMatthew314 569 116 17ms 15 Sep 2022 595th Pena86 569 116 11ms 16 Sep 2022 595th pricemat 569 116 13ms 11 Oct 2023 595th cmccandless 569 116 11ms 16 Oct 2023 595th m42km 569 116 12ms 25 Oct 2023 595th nhausspiegel 569 116 11ms 11 Apr 2024 595th resoNathan 569 116 13ms 25 Apr 2024 603rd hellomath010118 564 117 10ms 26 Nov 2021 603rd pengu1n-master 564 117 11ms 10 Dec 2021 603rd Roboprod 564 117 10ms 24 Aug 2022 603rd roguh 🇬🇹 564 117 11ms 7 Jan 2024 603rd Masttest 564 117 11ms 31 Jan 2024 603rd smilesformiles3 564 117 11ms 12 Jun 2025 609th init-jay 559 118 60ms 10 Aug 2022 609th fenix-bear 559 118 13ms 6 Jul 2023 609th jameswmccarty 559 118 11ms 9 Oct 2024 612th VilBoub 555 119 20ms 20 Apr 2022 612th julienlamoureux78 555 119 11ms 12 Aug 2022 612th za3k 555 119 12ms 12 Oct 2022 612th ozzypossie 555 119 11ms 24 May 2023 612th odelo 555 119 11ms 12 Oct 2023 612th rustykitty 🇺🇸 555 119 17ms 24 Oct 2025 618th nmgetahun 550 120 11ms 9 Dec 2022 618th Natz12 550 120 11ms 12 Jan 2023 618th AdamMorris377 550 120 11ms 22 Sep 2024 618th Mathrew2012 550 120 11ms 9 Nov 2024 618th Code-Coder-coder 550 120 10ms 11 Oct 2025 623rd puffertron 545 121 10ms 31 Aug 2023 623rd Loag 545 121 10ms 22 Sep 2024 625th TimLeffke 541 122 11ms 17 Aug 2022 625th KianShah 541 122 11ms 29 Mar 2023 625th OrangeBacon 541 122 12ms 31 Jul 2024 628th gitbedd 🇬🇧 537 123 12ms 11 Jan 2022 628th eiburns 537 123 61ms 23 Jan 2023 628th Vaekor 537 123 68ms 9 Jul 2023 628th midnattssol 🇸🇪 537 123 11ms 27 Jul 2023 628th Eulentier161 537 123 17ms 30 Aug 2023 628th holmest14 537 123 10ms 6 Aug 2024 628th GeneralFabian 537 123 11ms 14 Dec 2024 635th HassanAliKadhem 🇧🇭 532 124 11ms 5 Jan 2022 635th docd 532 124 11ms 8 Aug 2022 635th Very-Nerdy-Human 532 124 11ms 13 Jan 2024 635th 40fied4t 532 124 11ms 6 May 2025 635th DoubleUynn 532 124 11ms 21 Jun 2025 640th mrmena 🇦🇺 528 125 17ms 26 Mar 2024 First Prev 561–640 of 862 Next Last
