The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Evil Numbers (Long) in Python in bytes. 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 Bytes Time Submitted 310th Jaydosu 788 52 10ms 14 Nov 2022 310th Omega65536 🇩🇪 788 52 10ms 24 Nov 2022 310th PATTRIM 788 52 16ms 25 Dec 2022 310th betaveros 788 52 11ms 31 Dec 2022 310th b10011 🇫🇮 788 52 10ms 8 Jan 2023 310th eiburns 788 52 10ms 26 Jan 2023 310th CheeseCake628 🇳🇴 788 52 10ms 19 Mar 2023 310th TheoKeller1 788 52 10ms 11 Jun 2023 310th Vaekor 788 52 10ms 9 Jul 2023 310th andre-de-lorde 788 52 10ms 31 Aug 2023 310th jagannathhari 788 52 10ms 2 Oct 2023 310th inverseLorentz 🇦🇺 788 52 10ms 13 Oct 2023 310th ssbhatt4321 788 52 11ms 14 Oct 2023 310th nhausspiegel 788 52 9ms 26 Oct 2023 310th jerebenitez 788 52 10ms 8 Dec 2023 310th mikehanus 788 52 10ms 29 Jan 2024 310th VictorStenvers 🇳🇱 788 52 10ms 30 Jan 2024 310th Bmrl7 788 52 10ms 21 Feb 2024 310th FCORMERAIS 788 52 10ms 7 Mar 2024 310th Anonymousellama21 788 52 10ms 14 Mar 2024 310th rifatx 788 52 10ms 15 Jul 2024 310th cyxv 788 52 13ms 26 Jul 2024 310th NanduBC 788 52 11ms 3 Sep 2024 310th FernSchoenberg 788 52 11ms 15 Oct 2024 310th alabhyajindal 788 52 9ms 7 Apr 2025 310th 40fied4t 788 52 10ms 22 May 2025 310th DarkInfern010 788 52 10ms 25 May 2025 310th Natanaelel 🇸🇪 788 52 10ms 17 Jul 2025 310th katss2 788 52 10ms 17 Aug 2025 350th MichaelMBradley 🇨🇦 774 53 9ms 21 Sep 2022 350th afspies 774 53 18ms 25 Sep 2022 350th lukemalek 774 53 10ms 11 Oct 2022 350th georgehulme 774 53 16ms 12 Oct 2022 350th Zach10za 774 53 17ms 17 Nov 2022 350th DayDun 🇸🇪 774 53 10ms 21 Jan 2023 350th ehulinsky 🇺🇸 774 53 10ms 7 May 2023 350th cingulataluke 774 53 10ms 28 Aug 2023 350th dranjohn 774 53 9ms 11 Sep 2023 350th OCNeve 774 53 10ms 18 Jun 2024 350th Mathrew2012 774 53 10ms 14 Aug 2024 350th Schreipfelerer 774 53 41ms 10 Sep 2024 350th returnitynet 774 53 10ms 2 Jan 2025 350th robin-scragg 774 53 10ms 17 Aug 2025 350th osNiko 🇧🇷 774 53 9ms 21 Aug 2025 365th RoscoeSmith 759 54 9ms 8 Sep 2022 365th TimLeffke 759 54 10ms 13 Sep 2022 365th jiaminglimjm 🇲🇾 759 54 10ms 29 Sep 2022 365th achow0 759 54 9ms 8 Oct 2022 365th AZ9tumas 759 54 17ms 23 Oct 2022 365th Andre3582 759 54 10ms 29 Oct 2022 365th goGuru 759 54 10ms 21 Dec 2022 365th myleopard 759 54 10ms 22 Dec 2022 365th badboj40 759 54 11ms 26 Dec 2022 365th NDR0216 🇹🇼 759 54 10ms 3 Feb 2023 365th j-Ewan 759 54 10ms 9 Feb 2023 365th ashtraypettingzoo 🇺🇸 759 54 10ms 11 Feb 2023 365th ritwin-n 759 54 9ms 12 Jun 2023 365th midnattssol 🇸🇪 759 54 10ms 27 Jul 2023 365th ahegewald 759 54 10ms 11 Oct 2023 365th Pale-Vessel 759 54 10ms 16 Dec 2023 365th cooljoseph1 759 54 10ms 24 Dec 2023 365th jbjd 759 54 10ms 23 Feb 2024 365th Gusic06 759 54 10ms 15 Mar 2024 365th Hritik00923 759 54 10ms 23 Mar 2024 365th LostSyntax21 🇬🇧 759 54 11ms 10 Sep 2024 365th JesseNoEyes 🇺🇸 759 54 10ms 25 Sep 2024 365th kistlerf 🇨🇭 759 54 17ms 19 May 2025 365th adoxography 759 54 16ms 1 Sep 2025 365th TheZwierzLF 🇵🇱 759 54 10ms 26 days ago 365th kurkale6ka 759 54 16ms 7 days ago 391st P-Quentin 🇫🇷 745 55 10ms 5 Oct 2022 391st Xzoky174 745 55 11ms 8 Oct 2022 391st Heathcorp 🇦🇺 745 55 10ms 13 Oct 2022 391st Wildst 745 55 9ms 2 Nov 2022 391st Igyeom 🇰🇷 745 55 10ms 9 Jun 2023 391st robertovers 745 55 30ms 26 Sep 2023 391st FranklinJiaChen 745 55 10ms 30 Jul 2024 391st ihatethefrench 745 55 16ms 5 Jan 2025 391st Code-Coder-coder 745 55 10ms 11 Oct 2025 400th NerdyMcNerd42 732 56 10ms 10 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