The Calendar hole will go live in approximately 43 hours. Why not try and solve it ahead of time?
Inventory Sequence 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 80th thehylian 885 61 34ms 11 Jan 2023 80th galloj 🇨🇿 885 61 33ms 4 Mar 2023 80th commandblockguy 🇺🇸 885 61 29ms 17 Nov 2023 80th mathisfun271 885 61 34ms 13 Feb 2024 80th BREMAUCY 🇫🇷 885 61 32ms 7 Mar 2024 80th stertooy 🇧🇪 885 61 34ms 10 Jun 2024 80th Alex-x90 🇺🇸 885 61 11ms 20 Nov 2024 80th KatieLG 🇬🇧 885 61 33ms 19 Oct 2025 80th solisolu 885 61 29ms 27 days ago 80th JOrE20 🇺🇸 885 61 46ms 11 hours ago 91st rak1507 🇬🇧 871 62 29ms 22 Nov 2022 91st fourth-bit 871 62 33ms 7 Dec 2022 91st SniperSmiley 🇺🇸 871 62 34ms 10 Dec 2022 91st Fracture17 871 62 33ms 14 Apr 2023 91st quimey 871 62 33ms 23 Jun 2023 91st dranjohn 871 62 48ms 11 Sep 2023 91st RedzGoose 🇦🇺 871 62 13ms 17 Jun 2024 91st smilesformiles3 871 62 14ms 21 Jun 2025 91st snoozingnewt 🇨🇦 871 62 44ms 10 Oct 2025 100th guilhem-roy 🇫🇷 857 63 35ms 21 Nov 2022 100th jakobkordez 🇸🇮 857 63 11ms 22 Nov 2022 100th nstearns96 🇬🇧 857 63 31ms 6 Jan 2023 100th Tess2662 857 63 10ms 4 Mar 2023 100th 051 🇸🇬 857 63 15ms 24 Dec 2023 100th lhulinsky 857 63 34ms 23 Oct 2024 100th croc54 857 63 46ms 8 Jan 2025 100th andrewjc2000 857 63 36ms 29 Jul 2025 100th KasperKivimaeki 🇫🇮 857 63 29ms 25 Oct 2025 109th FlorianCassayre 🇫🇷 844 64 39ms 6 Jan 2023 109th CedricGebistorf 844 64 36ms 4 May 2023 109th cros107 🇦🇺 844 64 35ms 5 Oct 2023 109th logvp 844 64 31ms 3 Jan 2024 109th namelessiw 844 64 32ms 10 Jan 2024 109th jmfk 844 64 40ms 5 Apr 2024 109th hiichbindermax 844 64 36ms 4 Sep 2024 116th mrnomm 831 65 16ms 6 Apr 2023 116th suwat513 831 65 37ms 19 Jun 2023 116th 2011-Chan-Ethan 831 65 38ms 10 Jul 2023 116th neihousaigaai 831 65 14ms 13 Feb 2024 116th Stockoh 🇫🇷 831 65 38ms 26 Apr 2024 116th CLOStrophobic 🇮🇹 831 65 10ms 31 Jan 2025 116th TheZwierzLF 🇵🇱 831 65 34ms 27 May 2025 116th Bmrl7 831 65 14ms 6 days ago 124th mdnestor 818 66 38ms 23 Dec 2022 124th jared-hughes 818 66 12ms 16 Mar 2023 124th fgrosshans 🇫🇷 818 66 41ms 14 Jul 2024 124th codingisgreatbutiamnot 818 66 39ms 9 Aug 2024 124th hellwue 818 66 39ms 4 Sep 2024 124th iczelia 🇩🇪 818 66 41ms 23 Oct 2025 130th vishwathg 806 67 29ms 4 Feb 2023 130th jamesthekee 806 67 14ms 25 Jan 2025 132nd MichalMarsalek 🇨🇿 794 68 20ms 20 Nov 2022 132nd NerdyMcNerd42 794 68 14ms 22 Jan 2023 132nd SB-945 794 68 14ms 19 Feb 2024 135th andre-lameirinhas 🇵🇹 783 69 14ms 23 Feb 2023 135th jtaxen 783 69 16ms 30 Mar 2024 135th FranklinJiaChen 783 69 38ms 5 Aug 2024 135th dokutan 783 69 38ms 15 Aug 2024 135th webmiche 783 69 11ms 28 Nov 2025 140th b10011 🇫🇮 771 70 16ms 9 Jan 2023 140th knutae 🇳🇴 771 70 14ms 29 Dec 2023 140th wobblybits 771 70 14ms 18 Aug 2025 140th jacekwladzinski 771 70 27ms 4 Oct 2025 144th madex 🇩🇪 761 71 21ms 13 Jun 2023 144th tri1212 🇻🇳 761 71 42ms 30 Jun 2024 144th PyryL 🇫🇮 761 71 14ms 23 Aug 2024 144th Europe2048 761 71 18ms 24 Nov 2024 144th YAJUE114514 761 71 15ms 13 Jul 2025 144th madeforlosers 761 71 14ms 13 Nov 2025 150th msbranicky 750 72 16ms 19 Aug 2023 150th adamnielson42 🇺🇸 750 72 14ms 21 Aug 2023 150th Masttest 750 72 14ms 15 Feb 2024 150th Code-Coder-coder 750 72 13ms 24 Nov 2025 154th jhpaques 🇫🇷 740 73 39ms 30 Nov 2022 154th Andrey135296 740 73 16ms 21 Sep 2024 156th za3k 730 74 11ms 20 Nov 2022 156th MaxElf999 730 74 21ms 21 Nov 2022 156th celiendonze 🇨🇭 730 74 15ms 25 Apr 2023 156th willschremmer 730 74 20ms 11 May 2024 156th 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