The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Leyland Numbers 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 241st adoxography 785 93 10ms 8 Oct 2020 241st nullie 785 93 9ms 9 Jun 2022 241st julienlamoureux78 785 93 11ms 18 Aug 2022 241st CatsAreFluffy 785 93 10ms 21 Dec 2023 241st elgan65536 785 93 9ms 31 Mar 2024 241st Mikey-Beep 🇬🇧 785 93 10ms 2 Jun 2024 241st Papushkado 785 93 12ms 18 Nov 2025 248th bbakersmith 777 94 9ms 18 Jul 2021 248th jfallon1997 777 94 10ms 9 Aug 2022 248th wobblybits 777 94 9ms 19 Aug 2025 251st LeeCamp 768 95 9ms 27 Dec 2021 251st 4ndyJ 🇬🇧 768 95 9ms 7 Feb 2023 251st 0-ag 768 95 11ms 25 Aug 2025 254th Psirving 760 96 9ms 29 Jul 2020 254th henrytranter 760 96 10ms 27 Aug 2020 254th chrishm909 760 96 9ms 23 May 2021 254th sleepyStick 760 96 16ms 3 Dec 2021 254th tterem 760 96 11ms 8 Jun 2022 254th P-Quentin 🇫🇷 760 96 12ms 3 Aug 2022 254th sbyrne51 760 96 9ms 1 Oct 2022 254th NerdyMcNerd42 760 96 10ms 27 Oct 2022 262nd asadullayev 753 97 13ms 3 Mar 2021 262nd befoster 753 97 9ms 10 Apr 2021 262nd myleopard 753 97 13ms 15 Oct 2021 262nd Andrey135296 753 97 9ms 4 Apr 2022 262nd Bodo171 753 97 15ms 25 Nov 2022 267th ehulinsky 🇺🇸 745 98 10ms 11 Nov 2021 267th Trunksistor 🇫🇷 745 98 9ms 24 May 2022 267th MichaelMBradley 🇨🇦 745 98 10ms 19 Jun 2022 270th vezzick 737 99 13ms 7 Mar 2021 270th TimHuisman1703 737 99 9ms 7 Jan 2022 270th hellwue 737 99 9ms 25 Feb 2022 270th davecame 737 99 10ms 2 Aug 2023 274th EwanSkene 730 100 12ms 3 Sep 2020 274th boxjelly 730 100 10ms 14 Feb 2021 274th PhysicDev 🇫🇷 730 100 11ms 16 Mar 2022 274th wen1now 730 100 9ms 6 Nov 2023 274th Alban-Boissard 730 100 9ms 14 Jun 2025 274th TheZwierzLF 🇵🇱 730 100 13ms 17 hours ago 280th jameslindesay 723 101 40ms 25 Feb 2021 280th galloj 🇨🇿 723 101 11ms 21 Aug 2022 280th Acky-Acky 723 101 10ms 9 May 2024 283rd findegil 716 102 9ms 26 Aug 2020 283rd austinrwarner 716 102 11ms 25 Dec 2020 283rd Omega65536 🇩🇪 716 102 17ms 6 Jan 2021 283rd jhpaques 🇫🇷 716 102 13ms 29 Jul 2022 283rd jamesthekee 716 102 9ms 25 Jan 2025 288th atazzam 🇺🇸 709 103 13ms 2 Apr 2022 288th vishwathg 709 103 9ms 21 Aug 2022 288th fredrik-bakke 🇳🇴 709 103 10ms 2 Oct 2022 288th willschremmer 709 103 9ms 28 Apr 2024 288th wuzekai518 709 103 10ms 23 Jul 2024 288th Mabeloid 🇳🇴 709 103 9ms 22 Sep 2024 288th WillowWispy 709 103 10ms 17 Mar 2025 295th ydevor 🇮🇱 702 104 9ms 10 Mar 2021 295th Fishron 702 104 13ms 19 Oct 2021 297th mathwiz42 695 105 10ms 18 Aug 2020 297th PFischbeck 695 105 9ms 31 Oct 2020 297th estomagordo 🇳🇱 695 105 9ms 6 Dec 2021 297th 0dyse 695 105 13ms 12 Sep 2025 301st artieleach 689 106 13ms 7 Feb 2021 301st martinnorling 🇸🇪 689 106 10ms 31 Jan 2022 301st dylanjones92 689 106 10ms 26 Jan 2024 304th dostuffthatmatters 682 107 9ms 26 Jul 2020 304th guilhem-roy 🇫🇷 682 107 9ms 28 Feb 2022 304th celiendonze 🇨🇭 682 107 12ms 20 Apr 2023 304th Stockoh 🇫🇷 682 107 16ms 2 Oct 2024 308th Ted-Barrett 🇦🇺 676 108 9ms 30 Sep 2021 308th vodker1 676 108 9ms 7 Mar 2022 310th dymowski 670 109 9ms 17 Aug 2020 310th Florian-Mt 670 109 9ms 29 Sep 2023 312th CRHillman 664 110 10ms 14 Sep 2020 312th the-soph-ia 664 110 10ms 7 Mar 2021 312th Jacob385 664 110 4,219ms 6 Mar 2024 315th eiburns 658 111 9ms 4 Jan 2022 315th Vaekor 658 111 10ms 9 Jul 2023 317th SniperSmiley 🇺🇸 652 112 14ms 24 Jun 2022 317th 5quiwyrm 652 112 10ms 9 Dec 2024 317th TJK-S 652 112 10ms 17 days ago 320th OppositeShark 646 113 9ms 20 Jul 2022 First Prev 241–320 of 379 Next Last
