The Calendar hole will go live in approximately 13 days. 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 472nd ComputerKWasTaken 🇺🇸 353 190 10ms 8 May 2025 472nd EthanJantz 353 190 16ms 5 Sep 2025 483rd MLPdiscord 351 191 10ms 22 Jan 2022 484th WilliamBate 347 193 9ms 18 Aug 2020 484th evanrittner 347 193 10ms 26 Feb 2021 484th ztuned 347 193 10ms 26 Jul 2023 484th te-chnical 347 193 10ms 6 May 2025 488th Demonarchet 342 196 10ms 18 Apr 2023 488th Chimplement 342 196 12ms 13 Dec 2023 490th og2701 340 197 10ms 14 May 2021 490th ethandhunt 340 197 10ms 16 Aug 2021 492nd Akilles1 337 199 10ms 20 Nov 2024 493rd jakekaplan 335 200 16ms 15 Mar 2019 494th CRHillman 333 201 11ms 15 Sep 2020 495th akshatj27 🇦🇶 332 202 10ms 11 Jan 2022 496th CheeseCake628 🇳🇴 328 204 17ms 15 Nov 2024 497th mrmena 🇦🇺 327 205 10ms 29 Jun 2021 498th petar-donchev 324 207 9ms 8 Sep 2019 499th tomh1012 319 210 17ms 29 Oct 2020 500th besasam 318 211 10ms 31 Mar 2021 501st PaulBadour 316 212 9ms 29 Oct 2023 502nd zuparnowa 315 213 9ms 28 Jan 2019 502nd henrytranter 315 213 10ms 20 Sep 2019 502nd KiwiLT 315 213 10ms 16 Nov 2022 505th Bit125 313 214 11ms 31 Jan 2024 506th XaXa1234 312 215 9ms 23 Apr 2020 506th JuniorKlump 312 215 9ms 15 Sep 2025 508th hotmanga 306 219 9ms 6 Nov 2023 509th atazzam 🇺🇸 303 221 9ms 3 Sep 2022 510th jamespeilunli 302 222 9ms 29 Dec 2021 511th vonKrafft 300 223 9ms 25 Mar 2020 512th tasuren 299 224 23ms 8 Jan 2021 513th elteammate 296 226 10ms 7 Jul 2020 514th thomashastings 295 227 11ms 15 Apr 2021 515th Florian-Mt 289 232 10ms 15 Mar 2024 516th Ccuredalerayner 288 233 9ms 14 May 2021 517th AforAmpere 285 235 11ms 3 May 2020 518th tkjn 280 239 9ms 8 Nov 2023 518th OSYCh314 🇦🇺 280 239 9ms 7 Nov 2024 520th egelmex 276 243 9ms 15 Nov 2019 521st hjcafaroUC 272 246 10ms 12 Jun 2021 522nd TJK-S 271 247 9ms 14 days ago 523rd craftablescience 265 253 10ms 25 Apr 2022 524th DihydrogenMonoxideH2O 263 255 9ms 23 Jan 2025 525th cingulataluke 257 261 10ms 26 Aug 2023 526th newc0m 250 268 9ms 8 Apr 2019 527th SURAJMITTAL 248 270 10ms 17 Dec 2024 528th luttermann 246 272 10ms 9 Aug 2019 529th kevinnaviapaiva 245 274 11ms 14 Feb 2025 530th twocatsinatrenchcoat 241 278 10ms 12 May 2022 531st justpic1 240 279 10ms 13 Mar 2023 531st Mch47 240 279 9ms 29 Oct 2023 533rd dcure73 239 280 9ms 7 Jun 2019 534th ineedcookie 238 281 10ms 1 May 2024 535th YoungjuneKwon 236 284 10ms 22 Jan 2019 536th NoneTheFewer 235 285 10ms 14 days ago 537th JKfromHMS 233 288 10ms 30 Apr 2024 538th r-benson 🇬🇧 230 291 10ms 30 Jan 2023 539th kpasc 228 294 9ms 14 Jul 2018 540th MatanAvitan 227 295 10ms 18 Feb 2020 540th StoverGitHub 227 295 10ms 16 Jun 2022 540th cseiter 227 295 9ms 6 Dec 2022 543rd UltimateGuy0987 220 305 11ms 8 Nov 2022 543rd shanerey6 220 305 9ms 4 Oct 2023 545th mothcolada 🇺🇸 207 324 9ms 15 Dec 2020 546th jjbvtk 206 325 9ms 27 Sep 2021 547th jgermain48 206 326 9ms 25 Apr 2020 548th JOrE20 🇺🇸 204 329 9ms 17 days ago 549th Zhenyu-Bo 198 338 9ms 31 Jul 2025 550th codefeld 198 339 9ms 27 Feb 2023 551st LukasFolwarczny 🇨🇿 197 340 11ms 17 Sep 2022 552nd ldoodle 195 344 10ms 6 Oct 2022 553rd parkerscheon 190 352 11ms 24 Nov 2020 554th confusedjpg 180 372 10ms 31 Mar 2024 555th twrogers1 179 375 10ms 27 Aug 2020 556th luca1339 176 380 10ms 30 Apr 2024 557th lukasmoellerch 175 382 10ms 14 Jan 2019 558th valgardg 🇮🇸 166 403 10ms 8 Sep 2022 559th dahappy1989 160 418 9ms 5 Nov 2023 560th sayloren 160 419 9ms 4 Jul 2021 First Prev 481–560 of 584 Next Last
