The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Sierpiński Triangle 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 240th roguh 🇬🇹 454 119 11ms 22 Feb 2024 242nd rowboat1 446 121 11ms 22 Jun 2022 243rd xbxbxb007 443 122 9ms 22 Jan 2024 244th TheZappie 435 124 10ms 6 Jul 2022 245th jiaminglimjm 🇲🇾 432 125 16ms 29 Nov 2019 245th jhpaques 🇫🇷 432 125 17ms 30 Jul 2022 245th mbittner20 432 125 9ms 6 Jul 2024 248th AforAmpere 429 126 10ms 7 Jun 2020 248th MiranDaniel 🇨🇿 429 126 10ms 30 Aug 2023 248th yuchuehw 429 126 10ms 30 Jan 2024 248th Flekay 🇩🇪 429 126 9ms 11 Jul 2025 252nd msrawson 425 127 9ms 30 Aug 2018 252nd garrisonhh 425 127 10ms 22 Nov 2020 252nd bthalheim 425 127 16ms 4 Aug 2022 255th ComputerKWasTaken 🇺🇸 422 128 9ms 1 Jun 2024 255th CyberTapir 422 128 9ms 6 Sep 2024 255th PickausernamePi 422 128 9ms 17 Dec 2024 255th ffelixm 422 128 10ms 1 Jun 2025 259th Trunksistor 🇫🇷 419 129 10ms 21 Apr 2022 260th lmeuser 415 130 9ms 2 Dec 2017 261st mizuzimu 412 131 10ms 22 Nov 2021 261st LostSyntax21 🇬🇧 412 131 11ms 18 days ago 263rd bastienvoirin 🇫🇷 409 132 22ms 24 Apr 2020 263rd ehulinsky 🇺🇸 409 132 10ms 6 Nov 2021 265th Andre3582 406 133 9ms 29 Sep 2025 266th yokasuretsu 403 134 9ms 23 Apr 2018 267th Nikinator2704 400 135 10ms 31 Oct 2025 268th Awsute 394 137 10ms 20 Aug 2024 269th msbranicky 391 138 10ms 26 Jul 2023 270th Kasci 386 140 76ms 28 Dec 2021 271st twocatsinatrenchcoat 383 141 14ms 25 Nov 2022 271st voidgloom 383 141 16ms 23 Oct 2024 273rd LeftPathLane 380 142 9ms 28 Oct 2018 273rd fajost 380 142 10ms 26 Sep 2020 273rd simon-thornton_pace 380 142 10ms 11 Oct 2023 276th Re-Adventures 🇮🇳 378 143 10ms 25 Sep 2020 276th mcjo163 378 143 10ms 1 Oct 2022 278th brimstonetrader 372 145 9ms 10 Mar 2025 279th zoemarschner 362 149 10ms 16 May 2022 279th LukasFolwarczny 🇨🇿 362 149 9ms 15 Sep 2022 281st amishtal 360 150 10ms 5 Dec 2019 281st michelebastione 🇮🇹 360 150 9ms 19 Feb 2020 283rd feherd 353 153 10ms 4 Mar 2022 283rd MaxElf999 353 153 9ms 15 Dec 2022 285th rschwa6308 🇺🇸 342 158 17ms 2 Apr 2019 285th r-i-c-e 342 158 10ms 8 Jul 2023 285th NerdyMcNerd42 342 158 9ms 20 Jul 2024 288th wazawoo 335 161 10ms 23 Oct 2018 288th wrhm 335 161 16ms 14 Dec 2020 290th evanrittner 331 163 20ms 5 Jun 2021 291st Upload-and-View 🇺🇦 329 164 16ms 23 Jul 2025 292nd eiburns 325 166 9ms 8 May 2023 292nd Fanrco 325 166 10ms 31 Aug 2023 294th myleopard 323 167 10ms 15 Oct 2021 295th Altrul 321 168 11ms 17 Dec 2020 296th tomh1012 316 171 10ms 5 Nov 2020 297th TobyBoyne 🇬🇧 312 173 9ms 1 Jun 2019 297th j3mak 312 173 9ms 17 Jan 2024 299th P-Quentin 🇫🇷 310 174 35ms 9 Aug 2022 300th alangodfrey 298 181 11ms 30 Jan 2019 300th jfallon1997 298 181 9ms 27 Sep 2024 302nd orifu 290 186 10ms 7 Mar 2021 303rd hjcafaroUC 286 189 10ms 1 Aug 2020 304th DrPrettyman 283 191 10ms 5 Jul 2023 305th SimonPeatman 265 204 10ms 3 Feb 2019 306th Starwort 🇬🇧 263 205 11ms 22 Mar 2019 307th JOrE20 🇺🇸 260 208 14ms 2 days ago 308th decorator-factory 257 210 9ms 26 May 2019 309th Andrey2001 248 218 10ms 18 days ago 310th Omega65536 🇩🇪 241 224 10ms 6 Jan 2021 311th Crankbrother 234 231 11ms 16 Sep 2020 312th dzshn 227 238 9ms 25 Nov 2020 313th Haksell 🇦🇶 205 263 10ms 2 Jun 2019 314th potato-jackson 201 269 12ms 3 Mar 2021 315th greggelong 199 271 10ms 17 Jan 2020 316th hardlyBearable 195 277 16ms 31 May 2019 317th firegene 🇮🇪 193 280 10ms 25 Nov 2021 318th Vaekor 188 288 10ms 15 Nov 2020 319th ethandhunt 187 289 10ms 20 Jul 2021 320th j21marshall 185 292 10ms 7 Aug 2020 First Prev 241–320 of 399 Next Last
