The Calendar hole will go live in approximately 5 days. Why not try and solve it ahead of time?
Diamonds 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 marcin7Cd 659 85 17ms 1 Jan 2021 81st aposteriorist 🇨🇦 659 85 10ms 28 Jan 2022 81st keelimeguy 🇺🇸 659 85 9ms 7 May 2025 84th edre 651 86 16ms 7 Jun 2018 85th jeff-at-tamer-dot-codes 🇺🇸 644 87 9ms 6 Jun 2023 86th green-beans 636 88 9ms 30 Jan 2021 86th zacjl 636 88 16ms 20 Sep 2024 86th wh3n3v3r 🇨🇿 636 88 9ms 13 Nov 2024 86th JunkIce 636 88 10ms 19 Jan 2025 86th Bulmenisaurus 636 88 19ms 7 Jul 2025 91st lostMia 629 89 10ms 17 Jun 2023 91st jatloe 629 89 9ms 26 Aug 2024 91st Languag3 629 89 10ms 21 days ago 94th jared-hughes 622 90 10ms 7 Oct 2021 94th LogicalJoe 622 90 9ms 29 Sep 2022 94th AlephSquirrel 622 90 16ms 3 Dec 2022 94th inventshah 622 90 11ms 24 Sep 2023 94th KasperKivimaeki 🇫🇮 622 90 10ms 12 Jul 2025 94th LHuitre 622 90 9ms 1 Sep 2025 100th JDHuber23 615 91 9ms 23 Oct 2023 100th Grrisly 615 91 10ms 4 Nov 2023 100th stertooy 🇧🇪 615 91 9ms 13 Jun 2024 100th CaedenHarper 🇨🇦 615 91 9ms 2 Nov 2024 104th StefanHabel 🇨🇦 609 92 9ms 12 Dec 2022 104th betaveros 609 92 10ms 30 Dec 2022 104th markusgraube 609 92 10ms 2 Jul 2023 104th OwPowell 609 92 10ms 18 Dec 2023 104th luuumine 🇫🇷 609 92 11ms 17 Oct 2025 104th CommandLeo 🇮🇹 609 92 10ms 2 hours ago 110th giacomogallina 602 93 17ms 14 Jun 2019 110th loserface69 602 93 9ms 15 Mar 2020 110th Kloppermand 🇩🇰 602 93 9ms 6 Jan 2023 110th thisishowmymindworks 🇳🇴 602 93 9ms 31 May 2023 110th jesterjunk 602 93 9ms 23 Sep 2025 115th OllieBoyne 🇬🇧 596 94 9ms 17 Sep 2022 115th Eilonlif 🇮🇱 596 94 9ms 4 Nov 2022 115th stefangimmillaro 596 94 10ms 6 Jul 2023 115th mathisfun271 596 94 9ms 16 Dec 2023 119th tomtheisen 🇺🇸 589 95 9ms 4 Dec 2019 119th jiaminglimjm 🇲🇾 589 95 10ms 29 Feb 2020 119th Fishron 589 95 39ms 14 Oct 2021 119th jdw1023 589 95 10ms 26 Apr 2022 119th NanduBC 589 95 9ms 6 Sep 2024 119th EnTerr 589 95 10ms 15 Sep 2024 119th wuduculfre 589 95 10ms 21 Jul 2025 126th b-jam 583 96 11ms 7 Dec 2019 126th ragmani 583 96 9ms 18 Dec 2020 126th 2011-Chan-Ethan 583 96 10ms 20 Jul 2023 129th davitf 577 97 9ms 6 Jul 2020 129th Bubbler-4 577 97 9ms 2 Nov 2022 129th rollershutter 577 97 9ms 30 Jan 2024 129th Powerroff 577 97 10ms 4 May 2024 133rd Indivicivet 571 98 9ms 11 Mar 2021 133rd SomeKitten 🇺🇸 571 98 9ms 22 Aug 2022 133rd IshanPanpaliya 571 98 9ms 6 Oct 2022 133rd celiendonze 🇨🇭 571 98 10ms 18 Apr 2023 133rd chartung17 571 98 9ms 31 Dec 2023 133rd cardosoo 571 98 9ms 6 Oct 2024 133rd andrewjc2000 571 98 10ms 2 Jul 2025 133rd Nhan-TRANvan_keyloop 571 98 9ms 20 Aug 2025 133rd countlpaul-dotcom 571 98 10ms 19 Oct 2025 142nd drew-loukusa 566 99 9ms 26 May 2020 142nd Secozzi 566 99 9ms 20 Oct 2020 142nd seanshpark 566 99 10ms 18 Dec 2020 142nd soalyer 566 99 10ms 9 Nov 2021 142nd CodyMiner 566 99 10ms 14 Nov 2021 142nd MichalMarsalek 🇨🇿 566 99 9ms 23 Oct 2022 142nd logvp 566 99 10ms 6 Oct 2024 142nd BREMAUCY 🇫🇷 566 99 10ms 7 Aug 2025 150th PiterAnnema 560 100 9ms 23 Mar 2022 150th neihousaigaai 560 100 9ms 17 Apr 2022 150th Heathcorp 🇦🇺 560 100 11ms 2 Dec 2022 150th aksyristos 560 100 9ms 2 Feb 2023 150th madex 🇩🇪 560 100 9ms 9 Jul 2024 150th LostSyntax21 🇬🇧 560 100 10ms 2 Dec 2024 150th Pyroan 560 100 10ms 21 Feb 2025 150th evan18c 560 100 9ms 22 Apr 2025 150th LvLError 560 100 10ms 29 May 2025 150th Flekay 🇩🇪 560 100 10ms 10 Jul 2025 150th vgamula 🇺🇦 560 100 9ms 5 Aug 2025 First Prev 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