The Calendar hole will go live in approximately 6 days. 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 22 days ago 90th rak1507 🇬🇧 871 62 29ms 22 Nov 2022 90th fourth-bit 871 62 33ms 7 Dec 2022 90th SniperSmiley 🇺🇸 871 62 34ms 10 Dec 2022 90th Fracture17 871 62 33ms 14 Apr 2023 90th quimey 871 62 33ms 23 Jun 2023 90th dranjohn 871 62 48ms 11 Sep 2023 90th RedzGoose 🇦🇺 871 62 13ms 17 Jun 2024 90th smilesformiles3 871 62 14ms 21 Jun 2025 90th snoozingnewt 🇨🇦 871 62 44ms 10 Oct 2025 99th guilhem-roy 🇫🇷 857 63 35ms 21 Nov 2022 99th jakobkordez 🇸🇮 857 63 11ms 22 Nov 2022 99th nstearns96 🇬🇧 857 63 31ms 6 Jan 2023 99th Tess2662 857 63 10ms 4 Mar 2023 99th 051 🇸🇬 857 63 15ms 24 Dec 2023 99th lhulinsky 857 63 34ms 23 Oct 2024 99th croc54 857 63 46ms 8 Jan 2025 99th andrewjc2000 857 63 36ms 29 Jul 2025 99th KasperKivimaeki 🇫🇮 857 63 29ms 25 Oct 2025 108th FlorianCassayre 🇫🇷 844 64 39ms 6 Jan 2023 108th CedricGebistorf 844 64 36ms 4 May 2023 108th cros107 🇦🇺 844 64 35ms 5 Oct 2023 108th logvp 844 64 31ms 3 Jan 2024 108th namelessiw 844 64 32ms 10 Jan 2024 108th jmfk 844 64 40ms 5 Apr 2024 108th hiichbindermax 844 64 36ms 4 Sep 2024 115th mrnomm 831 65 16ms 6 Apr 2023 115th suwat513 831 65 37ms 19 Jun 2023 115th 2011-Chan-Ethan 831 65 38ms 10 Jul 2023 115th neihousaigaai 831 65 14ms 13 Feb 2024 115th Stockoh 🇫🇷 831 65 38ms 26 Apr 2024 115th CLOStrophobic 🇮🇹 831 65 10ms 31 Jan 2025 115th TheZwierzLF 🇵🇱 831 65 34ms 27 May 2025 115th Bmrl7 831 65 14ms 2 days ago 123rd mdnestor 818 66 38ms 23 Dec 2022 123rd jared-hughes 818 66 12ms 16 Mar 2023 123rd fgrosshans 🇫🇷 818 66 41ms 14 Jul 2024 123rd codingisgreatbutiamnot 818 66 39ms 9 Aug 2024 123rd hellwue 818 66 39ms 4 Sep 2024 123rd iczelia 🇩🇪 818 66 41ms 23 Oct 2025 129th vishwathg 806 67 29ms 4 Feb 2023 129th jamesthekee 806 67 14ms 25 Jan 2025 131st MichalMarsalek 🇨🇿 794 68 20ms 20 Nov 2022 131st NerdyMcNerd42 794 68 14ms 22 Jan 2023 131st SB-945 794 68 14ms 19 Feb 2024 134th andre-lameirinhas 🇵🇹 783 69 14ms 23 Feb 2023 134th jtaxen 783 69 16ms 30 Mar 2024 134th FranklinJiaChen 783 69 38ms 5 Aug 2024 134th dokutan 783 69 38ms 15 Aug 2024 134th webmiche 783 69 11ms 27 days ago 139th b10011 🇫🇮 771 70 16ms 9 Jan 2023 139th knutae 🇳🇴 771 70 14ms 29 Dec 2023 139th wobblybits 771 70 14ms 18 Aug 2025 139th jacekwladzinski 771 70 27ms 4 Oct 2025 143rd madex 🇩🇪 761 71 21ms 13 Jun 2023 143rd tri1212 🇻🇳 761 71 42ms 30 Jun 2024 143rd PyryL 🇫🇮 761 71 14ms 23 Aug 2024 143rd Europe2048 761 71 18ms 24 Nov 2024 143rd YAJUE114514 761 71 15ms 13 Jul 2025 143rd madeforlosers 761 71 14ms 13 Nov 2025 149th msbranicky 750 72 16ms 19 Aug 2023 149th adamnielson42 🇺🇸 750 72 14ms 21 Aug 2023 149th Masttest 750 72 14ms 15 Feb 2024 149th Code-Coder-coder 750 72 13ms 24 Nov 2025 153rd jhpaques 🇫🇷 740 73 39ms 30 Nov 2022 153rd Andrey135296 740 73 16ms 21 Sep 2024 155th za3k 730 74 11ms 20 Nov 2022 155th MaxElf999 730 74 21ms 21 Nov 2022 155th celiendonze 🇨🇭 730 74 15ms 25 Apr 2023 155th willschremmer 730 74 20ms 11 May 2024 155th moustave 730 74 32ms 2 Dec 2024 160th 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