The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Sierpiński Triangle in all languages 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 241st rucin93 🇵🇱 873 146 468ms 13 Mar 2025 242nd edsrzf 🇳🇿 872 106 110ms 13 days ago 243rd sean-niemann 🇺🇸 871 68 3,549ms 23 Oct 2024 244th MeWhenI 🇻🇦 871 74 4ms 23 May 2023 245th emplv 🇱🇻 870 55 9ms 8 Mar 2023 246th lynn 870 102 23ms 17 Jul 2023 247th lynn 865 37 36ms 11 Apr 2021 247th lynn 865 37 2ms 10 Jan 2022 247th Dominoscompute 865 37 35ms 1 Jun 2022 250th Steffan153 🇫🇮 865 68 120ms 21 Feb 2024 251st nwellnhof 🇩🇪 864 48 49ms 15 Sep 2023 252nd AlephSquirrel 864 82 3ms 6 Aug 2024 253rd andersk 🇺🇸 864 93 127ms 1 Nov 2022 254th DialFrost 🇸🇬 864 107 103ms 13 days ago 255th sisyphus-ppcg 🇦🇺 863 56 36ms 22 Jan 2023 255th ovs-code 🇩🇪 863 56 42ms 8 Jun 2024 255th anter69 🇭🇺 863 56 51ms 21 Oct 2024 255th pardouin 🇫🇷 863 56 38ms 11 Aug 2025 259th ovs-code 🇩🇪 863 181 7ms 31 Mar 2023 260th lifthrasiir 🇰🇷 862 62 313ms 2 Dec 2024 260th emgordon154 862 62 325ms 10 Sep 2025 262nd saito-ta 🇯🇵 862 63 2ms 31 May 2022 263rd primo-ppcg 🇹🇭 862 291 12ms 13 Aug 2025 264th kg583 🇺🇸 861 89 47ms 16 Feb 2025 265th GrayJoKing 🇦🇺 861 103 24ms 5 Apr 2023 266th btjones0 860 65 9ms 7 Dec 2021 266th anter69 🇭🇺 860 65 9ms 31 Aug 2025 268th rhdqor213 859 65 123ms 27 Sep 2023 269th primo-ppcg 🇹🇭 858 80 115ms 15 Feb 2019 269th ovs-code 🇩🇪 858 80 113ms 11 Nov 2023 271st AdrienHache 🇫🇷 857 75 382ms 22 Sep 2025 272nd m-tkach 🇺🇦 856 125 24ms 3 May 2022 273rd saito-ta 🇯🇵 855 67 12ms 12 Dec 2023 274th MeWhenI 🇻🇦 855 76 1ms 31 Dec 2022 275th sean-niemann 🇺🇸 855 94 117ms 27 Nov 2023 276th somebody1234 854 50 3ms 28 Mar 2018 277th GrayJoKing 🇦🇺 853 81 80ms 21 Jan 2023 278th GrayJoKing 🇦🇺 850 72 224ms 30 Oct 2023 279th primo-ppcg 🇹🇭 850 116 285ms 13 May 2020 280th hiddicop 🇸🇪 848 57 48ms 31 Jan 2021 280th olivermrose 🇺🇸 848 57 36ms 7 Oct 2021 280th DialFrost 🇸🇬 848 57 32ms 28 Nov 2023 283rd MichalMarsalek 🇨🇿 848 85 126ms 12 Feb 2023 283rd steffan-polygolf 848 85 145ms 21 Feb 2024 285th prplz 🇦🇺 847 66 10ms 4 Oct 2021 285th inventshah 847 66 10ms 21 Jan 2023 285th GrayJoKing 🇦🇺 847 66 10ms 23 Jan 2023 285th Alex-x90 🇺🇸 847 66 10ms 23 Jan 2023 285th ryyyn 🇺🇸 847 66 10ms 14 hours ago 290th lynn 846 95 127ms 10 Mar 2022 291st SirBogman 🇺🇸 845 57 244ms 29 Jan 2024 292nd MeWhenI 🇻🇦 845 105 26ms 7 Jun 2023 293rd Natanaelel 🇸🇪 844 42 49ms 29 Aug 2022 294th vlpx 🇫🇮 840 57 10ms 1 Aug 2024 294th p01 840 57 9ms 25 Jul 2025 296th sean-niemann 🇺🇸 840 70 90ms 23 Jun 2025 297th m-tkach 🇺🇦 840 134 2ms 29 Jan 2024 298th marcin7Cd 839 90 5ms 4 Feb 2021 299th antimon2 🇯🇵 838 54 420ms 12 Jul 2020 300th GrayJoKing 🇦🇺 836 68 131ms 13 Aug 2024 301st KasperKivimaeki 🇫🇮 835 118 259ms 9 Oct 2025 302nd jared-hughes 835 187 7ms 24 Jul 2023 303rd ovs-code 🇩🇪 833 63 4ms 20 Oct 2024 304th jared-hughes 833 78 2ms 13 Nov 2022 305th primo-ppcg 🇹🇭 832 79 1,304ms 11 May 2020 306th MeWhenI 🇻🇦 831 302 12ms 28 Aug 2023 307th MeWhenI 🇻🇦 830 58 248ms 28 Jan 2023 308th emplv 🇱🇻 830 59 7ms 2 Jul 2023 309th CLOStrophobic 🇮🇹 830 91 10ms 4 Mar 2025 310th MeWhenI 🇻🇦 823 56 954ms 12 May 2023 310th rucin93 🇵🇱 823 56 892ms 11 Jul 2024 310th pardouin 🇫🇷 823 56 1,238ms 11 Aug 2025 313th GrayJoKing 🇦🇺 823 79 2ms 23 Jan 2023 314th GrayJoKing 🇦🇺 823 140 2ms 6 Dec 2020 315th ovs-code 🇩🇪 822 55 271ms 9 May 2024 316th GrayJoKing 🇦🇺 822 65 379ms 16 Jan 2024 317th TFeld00 🇩🇰 822 68 9ms 19 Oct 2020 317th HETHAT 🇩🇿 822 68 10ms 4 Mar 2021 317th StefanHabel 🇨🇦 822 68 10ms 20 Apr 2024 317th bzijlema 🇳🇱 822 68 9ms 15 Nov 2024 First Prev 241–320 of 2,055 Next Last