The Calendar hole will go live in approximately 32 hours. Why not try and solve it ahead of time?
Diamonds 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 andre-lameirinhas 🇵🇹 558 120 16ms 4 Nov 2020 240th Bobini1 🇵🇱 558 120 10ms 10 Feb 2022 240th julian-hoelz 558 120 10ms 21 Sep 2024 240th sciencedjinn 558 120 9ms 8 Nov 2024 240th keelimeguy 🇺🇸 558 120 10ms 6 May 2025 246th dymowski 554 121 10ms 10 Sep 2019 246th matty3 554 121 10ms 26 Aug 2021 246th LeeCamp 554 121 9ms 20 Dec 2021 246th OppositeShark 554 121 9ms 19 Jul 2022 246th Wildst 554 121 10ms 2 Nov 2022 246th jacksonhenry3 554 121 9ms 2 Dec 2022 246th Vaekor 554 121 9ms 27 Feb 2024 246th aaa123git 554 121 9ms 17 Jul 2024 254th TheAristos 549 122 10ms 21 Oct 2019 254th danielwang5 549 122 14ms 1 Aug 2020 254th lostMia 549 122 9ms 17 Jun 2023 254th mateusz-sterczewski 549 122 10ms 7 Nov 2024 254th qwertzguy 🇫🇷 549 122 10ms 25 Mar 2025 254th Code-Coder-coder 549 122 10ms 11 Oct 2025 254th lelbal 549 122 10ms 18 days ago 261st Malin001 545 123 10ms 4 Jan 2020 261st argusdusty 🇺🇸 545 123 14ms 31 Dec 2020 261st myleopard 545 123 9ms 13 Oct 2021 261st nullie 545 123 10ms 7 Jun 2022 261st RandGuy 545 123 9ms 22 Nov 2022 261st jeff-at-tamer-dot-codes 🇺🇸 545 123 10ms 6 Jun 2023 267th fynnkroeger 540 124 9ms 22 Jan 2021 267th NicoAdams 540 124 10ms 21 Dec 2021 267th nstearns96 🇬🇧 540 124 9ms 12 Jan 2023 267th aalec 540 124 9ms 21 Apr 2024 267th Alban-Boissard 540 124 9ms 14 Jun 2025 272nd guliyevemil1 🇦🇿 536 125 9ms 30 Jan 2021 272nd martinnorling 🇸🇪 536 125 10ms 14 Feb 2022 272nd mrxz 🇳🇱 536 125 9ms 23 Jun 2024 272nd RedzGoose 🇦🇺 536 125 9ms 14 Oct 2024 272nd wh3n3v3r 🇨🇿 536 125 9ms 13 Nov 2024 272nd ffelixm 536 125 10ms 1 Jun 2025 278th ValdeQwerty 532 126 10ms 10 Jun 2020 278th bryan15 532 126 10ms 26 Aug 2021 278th bthalheim 532 126 9ms 8 Sep 2022 278th MaxElf999 532 126 10ms 27 Sep 2022 278th quarl 532 126 9ms 12 Nov 2024 278th JunkIce 532 126 9ms 19 Jan 2025 284th celynw 528 127 9ms 4 Aug 2020 284th krcs 🇵🇱 528 127 10ms 25 Dec 2021 284th jm600 528 127 9ms 15 Apr 2022 284th msbranicky 528 127 9ms 5 Jul 2023 288th PFischbeck 523 128 9ms 13 Jun 2018 288th mossprescott 523 128 10ms 10 Jan 2023 288th Player01osu 523 128 10ms 29 Oct 2023 288th jatloe 523 128 9ms 26 Aug 2024 292nd midnattssol 🇸🇪 519 129 10ms 27 Jul 2023 292nd smokestacklightnin 🇺🇸 519 129 9ms 17 Dec 2023 294th 130N35 515 130 9ms 28 Jan 2020 294th PhysicDev 🇫🇷 515 130 11ms 19 May 2021 294th mbittner20 515 130 10ms 27 May 2023 294th audrey314 515 130 9ms 29 Oct 2023 294th ValentinCassayre 515 130 11ms 27 Jul 2024 299th MichaelMBradley 🇨🇦 511 131 9ms 3 Apr 2022 299th moustave 511 131 9ms 3 Dec 2024 301st thisishowmymindworks 🇳🇴 508 132 9ms 16 Oct 2020 301st Shreyas-21 508 132 10ms 17 Feb 2021 301st ImpressedByRocks 508 132 10ms 25 Aug 2022 301st QuincyNash 🇺🇸 508 132 9ms 29 Nov 2022 301st eiburns 508 132 9ms 18 Sep 2023 301st namelessiw 508 132 9ms 5 Mar 2024 307th ehulinsky 🇺🇸 504 133 62ms 10 Nov 2021 307th luuumine 🇫🇷 504 133 10ms 17 Oct 2025 307th GodlyProgrammer1 504 133 10ms 27 Nov 2025 310th rschwa6308 🇺🇸 500 134 10ms 18 Aug 2021 310th scottwday 🇨🇦 500 134 9ms 4 Dec 2021 310th Andrey135296 500 134 13ms 25 Nov 2024 313th dyc3 496 135 9ms 8 Aug 2020 313th SniperSmiley 🇺🇸 496 135 9ms 23 Jun 2021 313th bbakersmith 496 135 10ms 15 Jul 2021 313th xDavidL 496 135 9ms 18 Feb 2022 313th codewrite 🇬🇧 496 135 10ms 4 Jul 2025 318th SirFireball3521 493 136 9ms 25 Jan 2023 318th vhoulbreque 🇫🇷 493 136 9ms 30 Nov 2025 320th bkshrader 489 137 10ms 31 Dec 2018 First Prev 241–320 of 585 Next Last
