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 801st scpchicken 🇵🇼 587 117 114ms 3 Mar 2022 802nd Shanethegamer 🇺🇸 586 76 189ms 14 Dec 2022 803rd ETHproductions 🇺🇸 584 82 9ms 25 Jul 2018 803rd madex 🇩🇪 584 82 9ms 3 Aug 2021 803rd fitzdotlol 🇺🇸 584 82 9ms 21 Mar 2022 803rd trinityy-7 584 82 9ms 8 Oct 2024 807th Yewzir 🇧🇪 584 93 2ms 8 Apr 2024 808th frankgraziano 584 98 5ms 19 Feb 2025 809th Shanethegamer 🇺🇸 584 110 342ms 26 Mar 2022 810th olleicua 🇺🇸 582 83 37ms 15 Feb 2024 811th retrohun 582 96 1ms 9 Mar 2019 811th ieeemma 582 96 10ms 1 Feb 2020 811th djeedjay 🇳🇱 582 96 1ms 29 Oct 2020 811th OllieBoyne 🇬🇧 582 96 11ms 29 Jan 2021 811th Mikey-Beep 🇬🇧 582 96 10ms 2 Jun 2024 811th solisolu 582 96 10ms 15 Nov 2025 817th cbrt-x 582 118 115ms 11 Oct 2023 818th Yewzir 🇧🇪 582 122 395ms 29 Mar 2024 819th scpchicken 🇵🇼 579 77 131ms 13 Mar 2022 820th galloj 🇨🇿 578 94 1ms 30 Aug 2022 821st user189032 577 83 8ms 29 May 2019 822nd MeWhenI 🇻🇦 577 91 8ms 16 Aug 2024 823rd RussellEmerine 577 119 117ms 9 Apr 2020 823rd guliyevemil1 🇦🇿 577 119 124ms 20 Apr 2020 825th skps2010 576 97 10ms 15 Jun 2019 825th martinnorling 🇸🇪 576 97 10ms 31 Mar 2022 825th rollershutter 576 97 12ms 30 Jun 2024 825th hiichbindermax 576 97 9ms 17 Sep 2024 825th ToE42 576 97 10ms 28 May 2025 830th TheZwierzLF 🇵🇱 575 93 474ms 2 days ago 831st DialFrost 🇸🇬 573 84 227ms 14 Jun 2024 832nd Shanethegamer 🇺🇸 572 95 2ms 31 Oct 2022 832nd alphafalfa 572 95 2ms 1 Aug 2025 834th rak1507 🇬🇧 572 120 121ms 29 Jun 2021 835th HumanoidCPU 572 126 209ms 12 Nov 2025 836th Indivicivet 571 98 10ms 17 Mar 2021 836th Bonjour27891 🇻🇳 571 98 12ms 6 Mar 2022 836th nullie 571 98 9ms 15 Jun 2022 836th johndixon01 571 98 10ms 22 Sep 2022 836th QuincyNash 🇺🇸 571 98 10ms 30 Nov 2022 836th ridingqwerty 🇺🇸 571 98 10ms 19 Dec 2023 836th theadamabrams 571 98 9ms 28 Nov 2024 836th TheZwierzLF 🇵🇱 571 98 9ms 24 days ago 844th Shanethegamer 🇺🇸 571 105 98ms 26 Mar 2022 845th UnderKoen 🇳🇱 571 197 1ms 8 Mar 2023 846th arctouch-cristiannevianna 569 113 326ms 24 Nov 2023 847th Yewzir 🇧🇪 567 88 2ms 15 Oct 2023 848th anastos 567 121 116ms 23 Jul 2018 849th wadefletch 565 99 9ms 8 Feb 2020 849th AkashTandon167 565 99 11ms 3 Jan 2021 849th kirbyyourmom 🇬🇧 565 99 10ms 4 Mar 2021 849th jtaxen 565 99 9ms 5 Apr 2024 849th dokutan 565 99 10ms 15 May 2024 854th janlelis 563 85 9ms 9 Feb 2021 854th Shanethegamer 🇺🇸 563 85 9ms 16 Jul 2021 856th mossprescott 563 122 108ms 13 Aug 2018 856th janbehrens 🇩🇪 563 122 114ms 17 Jun 2021 858th JRaspass 🇬🇧 562 76 2ms 28 Mar 2022 859th emgordon154 560 181 1,666ms 3 Jun 2025 860th max-the-mage 559 100 10ms 29 Oct 2020 860th celiendonze 🇨🇭 559 100 13ms 26 Jun 2023 860th cingulataluke 559 100 9ms 26 Aug 2023 860th weliveinhell 🇭🇹 559 100 10ms 2 Oct 2024 860th 5quiwyrm 559 100 9ms 11 Feb 2025 865th Yewzir 🇧🇪 558 122 36ms 29 Mar 2024 866th elisherer 🇮🇱 557 80 211ms 13 Apr 2019 866th o0lit3 🇺🇸 557 80 135ms 10 Jul 2020 866th rucin93 🇵🇱 557 80 139ms 7 Sep 2020 866th olivermrose 🇺🇸 557 80 146ms 20 Sep 2021 866th trist224 🇫🇷 557 80 183ms 28 Nov 2022 866th retrohun 557 80 140ms 30 Dec 2022 866th neel11235813 557 80 148ms 3 Feb 2023 866th JRaspass 🇬🇧 557 80 114ms 22 Feb 2023 866th DialFrost 🇸🇬 557 80 167ms 26 Nov 2023 875th Yewzir 🇧🇪 555 108 78ms 29 Mar 2024 876th DialFrost 🇸🇬 555 128 553ms 8 Jun 2024 877th janbehrens 🇩🇪 555 130 120ms 17 Jun 2021 878th Psirving 554 101 9ms 1 Aug 2020 878th vezzick 554 101 10ms 12 Mar 2021 878th quimey 554 101 9ms 5 Jul 2023 First Prev 801–880 of 2,056 Next Last