The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
Inventory Sequence in Python in chars. 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 Chars Time Submitted 81st OllieBoyne 🇬🇧 850 60 32ms 6 Dec 2022 81st AlexanderFair 850 60 32ms 2 Jul 2023 81st bzijlema 🇳🇱 850 60 33ms 11 Nov 2023 81st ahmetdemirag 🇨🇾 850 60 29ms 21 Jul 2024 81st dokutan 850 60 39ms 21 Aug 2024 81st BlankSpruce 850 60 11ms 26 Apr 2025 81st jipsong 🇩🇪 850 60 30ms 13 Jun 2025 81st webmiche 850 60 11ms 27 days ago 89th thehylian 836 61 34ms 11 Jan 2023 89th galloj 🇨🇿 836 61 33ms 4 Mar 2023 89th commandblockguy 🇺🇸 836 61 29ms 17 Nov 2023 89th mathisfun271 836 61 34ms 13 Feb 2024 89th BREMAUCY 🇫🇷 836 61 32ms 7 Mar 2024 89th stertooy 🇧🇪 836 61 34ms 10 Jun 2024 89th tri1212 🇻🇳 836 61 39ms 30 Jun 2024 89th Alex-x90 🇺🇸 836 61 11ms 20 Nov 2024 89th KatieLG 🇬🇧 836 61 33ms 19 Oct 2025 89th solisolu 836 61 29ms 22 days ago 99th rak1507 🇬🇧 823 62 29ms 22 Nov 2022 99th fourth-bit 823 62 33ms 7 Dec 2022 99th SniperSmiley 🇺🇸 823 62 34ms 10 Dec 2022 99th Fracture17 823 62 33ms 14 Apr 2023 99th quimey 823 62 33ms 23 Jun 2023 99th dranjohn 823 62 48ms 11 Sep 2023 99th RedzGoose 🇦🇺 823 62 13ms 17 Jun 2024 99th smilesformiles3 823 62 14ms 21 Jun 2025 107th guilhem-roy 🇫🇷 810 63 35ms 21 Nov 2022 107th nstearns96 🇬🇧 810 63 31ms 6 Jan 2023 107th Tess2662 810 63 10ms 4 Mar 2023 107th 051 🇸🇬 810 63 15ms 24 Dec 2023 107th lhulinsky 810 63 34ms 23 Oct 2024 107th croc54 810 63 46ms 8 Jan 2025 107th andrewjc2000 810 63 36ms 29 Jul 2025 107th KasperKivimaeki 🇫🇮 810 63 29ms 25 Oct 2025 115th CedricGebistorf 797 64 36ms 4 May 2023 115th cros107 🇦🇺 797 64 35ms 5 Oct 2023 115th logvp 797 64 31ms 3 Jan 2024 115th namelessiw 797 64 32ms 10 Jan 2024 115th jmfk 797 64 40ms 5 Apr 2024 115th hiichbindermax 797 64 36ms 4 Sep 2024 121st mrnomm 785 65 16ms 6 Apr 2023 121st suwat513 785 65 37ms 19 Jun 2023 121st neihousaigaai 785 65 14ms 13 Feb 2024 121st Stockoh 🇫🇷 785 65 38ms 26 Apr 2024 121st willschremmer 785 65 21ms 11 May 2024 121st CLOStrophobic 🇮🇹 785 65 10ms 31 Jan 2025 121st JunkIce 785 65 14ms 13 Feb 2025 121st TheZwierzLF 🇵🇱 785 65 34ms 27 May 2025 121st rucin93 🇵🇱 785 65 20ms 31 May 2025 121st Bmrl7 785 65 14ms 45 hours ago 131st mdnestor 773 66 38ms 23 Dec 2022 131st jared-hughes 773 66 12ms 16 Mar 2023 131st fgrosshans 🇫🇷 773 66 41ms 14 Jul 2024 131st codingisgreatbutiamnot 773 66 39ms 9 Aug 2024 131st hellwue 773 66 39ms 4 Sep 2024 131st iczelia 🇩🇪 773 66 41ms 23 Oct 2025 137th vishwathg 761 67 29ms 4 Feb 2023 137th Yewzir 🇧🇪 761 67 15ms 7 Feb 2024 137th wh3n3v3r 🇨🇿 761 67 14ms 14 Nov 2024 137th jamesthekee 761 67 14ms 25 Jan 2025 141st MichalMarsalek 🇨🇿 750 68 20ms 20 Nov 2022 141st jmerle 🇳🇱 750 68 22ms 11 Jul 2023 143rd andre-lameirinhas 🇵🇹 739 69 14ms 23 Feb 2023 143rd jtaxen 739 69 16ms 30 Mar 2024 143rd FranklinJiaChen 739 69 38ms 5 Aug 2024 146th b10011 🇫🇮 729 70 16ms 9 Jan 2023 146th Just4FunCoder 729 70 40ms 23 Mar 2023 146th knutae 🇳🇴 729 70 14ms 29 Dec 2023 146th wobblybits 729 70 14ms 18 Aug 2025 146th jacekwladzinski 729 70 27ms 4 Oct 2025 151st madex 🇩🇪 718 71 21ms 13 Jun 2023 151st PyryL 🇫🇮 718 71 14ms 23 Aug 2024 151st Europe2048 718 71 18ms 24 Nov 2024 151st YAJUE114514 718 71 15ms 13 Jul 2025 151st madeforlosers 718 71 14ms 13 Nov 2025 156th msbranicky 708 72 16ms 19 Aug 2023 156th adamnielson42 🇺🇸 708 72 14ms 21 Aug 2023 156th Masttest 708 72 14ms 15 Feb 2024 156th Code-Coder-coder 708 72 13ms 24 Nov 2025 160th jhpaques 🇫🇷 699 73 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