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 321st bendiscz 822 120 286ms 18 Apr 2020 322nd nwellnhof 🇩🇪 821 39 34ms 1 Oct 2021 323rd emplv 🇱🇻 821 68 2ms 31 May 2022 324th somebody1234 821 92 7ms 19 May 2018 325th MeWhenI 🇻🇦 820 82 99ms 17 Nov 2022 326th Kacarott 🇦🇺 820 87 62ms 9 days ago 327th kumavale 820 98 119ms 10 Sep 2025 328th janlelis 819 59 41ms 5 Jan 2020 328th prplz 🇦🇺 819 59 35ms 5 Jun 2020 328th KatieLG 🇬🇧 819 59 38ms 19 Oct 2021 328th jared-hughes 819 59 45ms 12 Sep 2022 328th GrayJoKing 🇦🇺 819 59 36ms 21 Jan 2023 333rd HPWiz 🇳🇿 817 84 114ms 20 Oct 2020 334th GrayJoKing 🇦🇺 816 94 6ms 4 Feb 2025 335th emplv 🇱🇻 812 70 130ms 28 Mar 2025 336th inventshah 812 90 66ms 6 days ago 337th xem 811 59 9ms 8 Oct 2018 338th cure-honey 🇯🇵 811 132 25ms 9 Jul 2021 339th AlexDaniel 🇪🇪 810 55 183ms 21 Feb 2018 340th MeWhenI 🇻🇦 810 69 10ms 29 Nov 2021 340th neel11235813 810 69 9ms 21 Feb 2023 340th CaedenHarper 🇨🇦 810 69 9ms 29 Jul 2025 340th ImpressedByRocks 810 69 9ms 6 Sep 2025 340th edsrzf 🇳🇿 810 69 9ms 11 Sep 2025 345th primo-ppcg 🇹🇭 810 74 92ms 20 Jan 2020 345th MeWhenI 🇻🇦 810 74 93ms 27 Feb 2023 347th emplv 🇱🇻 810 83 105ms 22 Jan 2023 347th Yewzir 🇧🇪 810 83 98ms 28 Mar 2024 349th ovs-code 🇩🇪 810 88 73ms 17 Sep 2023 350th stefangimmillaro 809 57 1,077ms 10 Jan 2023 351st MeWhenI 🇻🇦 808 78 84ms 12 Dec 2022 352nd emplv 🇱🇻 808 122 274ms 26 Jan 2022 352nd stefangimmillaro 808 122 285ms 18 May 2024 354th sisyphus-ppcg 🇦🇺 807 92 3ms 6 Feb 2023 354th ovs-code 🇩🇪 807 92 3ms 7 Feb 2023 354th DialFrost 🇸🇬 807 92 2ms 3 Feb 2025 357th steffan-polygolf 806 80 4ms 21 Feb 2024 358th SirBogman 🇺🇸 805 60 37ms 4 Dec 2022 359th rucin93 🇵🇱 801 74 3,998ms 20 Nov 2024 360th GrayJoKing 🇦🇺 801 90 125ms 5 Apr 2023 361st edre 799 70 10ms 6 May 2018 362nd steffan-polygolf 799 96 8ms 21 Feb 2024 362nd MeWhenI 🇻🇦 799 96 7ms 1 Jan 2025 364th Shanethegamer 🇺🇸 799 111 23ms 2 Mar 2023 365th sisyphus-ppcg 🇦🇺 798 60 8ms 23 Jan 2023 366th duckyluuk 🇳🇱 798 67 360ms 5 Apr 2024 367th anter69 🇭🇺 795 58 1,179ms 22 Feb 2024 368th BlankSpruce 795 92 68ms 12 Aug 2022 368th zygoloid 795 92 77ms 6 Aug 2024 368th snyderek 🇺🇸 795 92 83ms 6 Aug 2024 368th tailorspy 795 92 63ms 9 Aug 2024 372nd MarcMush 🇫🇷 794 57 373ms 13 Jan 2022 373rd primo-ppcg 🇹🇭 794 74 106ms 25 Dec 2020 374th Yax42 🇫🇷 794 81 362ms 2 Oct 2025 375th Shanethegamer 🇺🇸 792 61 37ms 20 Aug 2021 376th m-tkach 🇺🇦 792 112 28ms 5 Jan 2024 377th MeWhenI 🇻🇦 791 54 2ms 26 May 2023 378th Shanethegamer 🇺🇸 791 85 101ms 25 Oct 2022 379th sisyphus-ppcg 🇦🇺 790 62 6ms 22 Jan 2023 380th sean-niemann 🇺🇸 789 76 79ms 7 Dec 2023 381st arjanadriaanse 🇳🇱 789 87 113ms 9 Feb 2022 382nd ovs-code 🇩🇪 789 90 484ms 8 Mar 2022 383rd marcin7Cd 787 71 9ms 27 Dec 2020 383rd OwPowell 787 71 10ms 18 Dec 2023 383rd duckyluuk 🇳🇱 787 71 9ms 5 Apr 2024 383rd ZakkkkAttackkkk 🇵🇭 787 71 9ms 20 Feb 2025 383rd Babafaba 787 71 11ms 6 Nov 2025 388th emplv 🇱🇻 787 136 25ms 31 Oct 2022 389th tayloia 🇬🇧 785 61 9ms 10 May 2023 389th steffan-polygolf 785 61 9ms 21 Feb 2024 391st Attero 🇸🇪 783 83 2ms 2 Apr 2020 392nd emgordon154 783 118 107ms 12 days ago 393rd edsrzf 🇳🇿 781 95 42ms 14 Nov 2025 394th primo-ppcg 🇹🇭 780 41 13ms 10 Feb 2022 395th proton 🇩🇪 779 62 37ms 9 Jun 2020 395th jaredcrystal 🇺🇸 779 62 41ms 14 Dec 2020 397th MeWhenI 🇻🇦 779 64 1ms 10 Oct 2023 398th ovs-code 🇩🇪 778 94 76ms 3 Jun 2024 399th RDShah 777 72 9ms 11 Apr 2021 400th rucin93 🇵🇱 776 55 3ms 11 Jul 2024 First Prev 321–400 of 2,055 Next Last