The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Intersection 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 240th Bmrl7 750 144 11ms 3 Mar 2024 240th HumanoidCPU 750 144 13ms 1 Nov 2024 240th rollershutter 750 144 12ms 8 Oct 2025 244th maggym00 745 145 10ms 27 Apr 2021 244th AkashTandon167 745 145 10ms 25 May 2021 244th LeeCamp 745 145 10ms 9 Dec 2021 244th eshilo-draper 745 145 16ms 15 Jun 2023 244th Ythaenagor 745 145 17ms 5 Aug 2024 244th JunkIce 745 145 17ms 4 Oct 2024 250th MisterrLuck 740 146 10ms 3 Sep 2023 250th Command-Master 740 146 10ms 24 Sep 2023 250th solisolu 740 146 10ms 7 Nov 2025 253rd mossprescott 730 148 10ms 17 Jan 2023 253rd aksyristos 730 148 11ms 28 Feb 2023 255th NicoAdams 720 150 10ms 21 Nov 2021 255th fgrosshans 🇫🇷 720 150 10ms 12 Jan 2022 255th MaxElf999 720 150 11ms 27 Sep 2022 255th egasyelir 720 150 9ms 13 Jul 2024 259th cpeck-rmvd 715 151 11ms 18 Jan 2023 260th Pena86 711 152 16ms 14 Mar 2021 260th BREMAUCY 🇫🇷 711 152 10ms 22 Sep 2025 262nd vishwathg 706 153 23ms 27 Sep 2022 262nd mbittner20 706 153 10ms 27 May 2023 264th Starwort 🇬🇧 701 154 11ms 5 Mar 2021 264th nstearns96 🇬🇧 701 154 10ms 15 Dec 2022 266th sciencejiho 697 155 10ms 26 Sep 2024 267th Anonymousellama21 692 156 10ms 8 Dec 2021 267th Bananapants22 692 156 11ms 30 Aug 2022 267th NickTheEASDude 🇺🇸 692 156 11ms 6 May 2024 270th Andre3582 688 157 11ms 6 Nov 2020 270th DrPiranoid 688 157 10ms 24 Sep 2022 270th Bodo171 688 157 16ms 27 Nov 2022 270th gthayden23 688 157 31ms 29 Oct 2023 270th vhoulbreque 🇫🇷 688 157 1,506ms 15 days ago 275th Omega65536 🇩🇪 684 158 10ms 7 Jan 2021 275th Bonjour27891 🇻🇳 684 158 11ms 13 Mar 2022 275th Tess2662 684 158 15ms 4 Mar 2023 275th jeff-at-tamer-dot-codes 🇺🇸 684 158 10ms 18 May 2023 275th Player01osu 684 158 10ms 29 Oct 2023 275th epic-programmer-guy 684 158 10ms 31 Dec 2023 275th robin-scragg 684 158 9ms 9 Oct 2025 282nd glesnick 679 159 10ms 15 Jul 2022 283rd vezzick 675 160 10ms 5 Mar 2021 283rd roguh 🇬🇹 675 160 10ms 23 Jan 2024 283rd rustykitty 🇺🇸 675 160 10ms 3 Nov 2025 286th ehulinsky 🇺🇸 671 161 30ms 15 Sep 2021 286th WillowWispy 671 161 10ms 14 Mar 2025 288th Marthe-CC 667 162 10ms 16 Oct 2022 288th Cynopolis 667 162 11ms 17 Oct 2023 290th Wildst 659 164 10ms 7 Jul 2023 290th jameswmccarty 659 164 11ms 28 Mar 2025 292nd za3k 655 165 10ms 9 Oct 2022 293rd SniperSmiley 🇺🇸 651 166 10ms 15 Jun 2022 293rd DrPrettyman 651 166 10ms 11 Jul 2023 293rd askipio 651 166 10ms 22 Nov 2023 293rd qwjhvbxi 651 166 10ms 10 Feb 2024 297th petroselo 647 167 9ms 15 Dec 2020 297th NoahBolohan 🇨🇦 647 167 11ms 9 Feb 2023 299th NanduBC 643 168 10ms 10 Apr 2021 300th ThatAlo 639 169 11ms 25 May 2023 300th navier-1 639 169 10ms 19 Sep 2025 302nd mokymok 🇺🇸 635 170 10ms 24 Sep 2021 302nd narad-muni 🇮🇳 635 170 10ms 16 May 2022 302nd AbuzarN 635 170 10ms 22 Nov 2023 305th w-henderson 632 171 10ms 11 Jun 2022 306th befoster 628 172 10ms 10 Apr 2021 306th forlack 628 172 19ms 11 Nov 2021 308th adesanjo 624 173 10ms 15 days ago 309th rowboat1 614 176 10ms 16 Jun 2022 310th Jacob385 610 177 16ms 24 Feb 2024 311th msbranicky 607 178 11ms 12 Jul 2023 312th dgambit 600 180 38ms 7 Sep 2022 313th omero-san 590 183 10ms 19 Sep 2025 314th davidludwik2370 587 184 11ms 14 Sep 2025 315th Azearia 584 185 16ms 28 Feb 2024 316th xenufo 581 186 10ms 15 Nov 2020 317th janga1 578 187 10ms 17 Aug 2021 317th AstroOrbis 578 187 10ms 11 Jul 2025 319th degerman 574 188 11ms 10 May 2023 319th sciencedjinn 574 188 10ms 8 Nov 2024 First Prev 241–320 of 370 Next Last