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 561st edsrzf 🇳🇿 710 108 8ms 8 Jan 2025 562nd thisishowmymindworks 🇳🇴 708 79 10ms 5 Oct 2020 562nd SnowballSH 708 79 12ms 4 Mar 2021 562nd NewDefectus 🇮🇱 708 79 9ms 9 Nov 2021 562nd fourth-bit 708 79 10ms 23 Sep 2024 562nd Pyroan 708 79 9ms 22 Feb 2025 562nd wuduculfre 708 79 9ms 22 Jul 2025 562nd cros107 🇦🇺 708 79 9ms 12 days ago 569th flawr 708 97 115ms 24 Feb 2019 570th bluebear94 707 63 129ms 12 Feb 2018 571st buddy1616 707 79 1ms 26 Apr 2019 571st ktiy 707 79 2ms 2 Jun 2021 571st m-tkach 🇺🇦 707 79 2ms 15 Dec 2022 574th stefangimmillaro 705 100 428ms 6 Oct 2025 575th cywong-amino 🇭🇰 704 68 9ms 30 May 2020 575th dmrichwa 🇺🇸 704 68 9ms 22 Jan 2023 575th kcinnu 🇱🇹 704 68 9ms 15 Nov 2023 578th Shanethegamer 🇺🇸 704 109 10ms 19 Dec 2023 579th SirBogman 🇺🇸 703 76 444ms 16 Jan 2024 580th SirBogman 🇺🇸 701 358 11ms 23 Nov 2022 581st D-MOVE 🇵🇭 700 69 48ms 9 days ago 582nd MeWhenI 🇻🇦 700 70 4ms 3 Jul 2023 583rd Ripick 700 103 271ms 21 May 2023 584th yzhs 🇩🇪 699 80 10ms 6 Sep 2020 584th namelessiw 699 80 9ms 6 May 2024 586th s-g-stavely 699 93 2ms 12 May 2021 587th Shanethegamer 🇺🇸 699 94 1,278ms 9 Mar 2023 588th Feniske 🇫🇷 698 69 250ms 10 Nov 2023 589th foxmcloud555 698 80 2ms 28 Apr 2022 589th aksyristos 698 80 2ms 10 Feb 2023 589th neel11235813 698 80 1ms 14 Mar 2023 589th klixel 🇨🇦 698 80 2ms 7 Jun 2023 589th Herbert00709 🇵🇱 698 80 2ms 23 Nov 2024 589th TeodorDyakov 🇧🇬 698 80 1ms 23 Sep 2025 595th MeWhenI 🇻🇦 697 85 3,677ms 27 Oct 2024 595th pardouin 🇫🇷 697 85 3,879ms 12 Nov 2024 595th aditsu 697 85 3,699ms 13 Aug 2025 598th cure-honey 🇯🇵 697 86 79ms 10 Jul 2021 599th DialFrost 🇸🇬 696 65 2,299ms 31 Dec 2023 600th inventshah 696 78 199ms 6 Jul 2022 601st steffan-polygolf 695 51 54ms 21 Feb 2024 602nd janbehrens 🇩🇪 695 154 25ms 8 Jul 2021 603rd commandblockguy 🇺🇸 694 77 631ms 15 Jan 2024 604th MeWhenI 🇻🇦 692 103 72ms 2 Nov 2023 605th argusdusty 🇺🇸 690 81 10ms 31 Dec 2020 605th scpchicken 🇵🇼 690 81 10ms 13 Mar 2022 605th mathb0y512 690 81 11ms 24 Nov 2022 605th Bulmenisaurus 690 81 10ms 5 Jan 2025 605th InigoK 🇺🇸 690 81 10ms 22 Sep 2025 610th janbehrens 🇩🇪 689 62 3ms 28 Nov 2023 611th Shanethegamer 🇺🇸 688 99 35ms 14 Jun 2022 612th typeswitch-dev 🇵🇹 688 103 3ms 28 Jul 2023 613th bforte 686 100 113ms 21 Dec 2018 614th cure-honey 🇯🇵 685 66 291ms 15 Jul 2021 614th MeWhenI 🇻🇦 685 66 293ms 15 Feb 2023 616th steffan-polygolf 685 78 388ms 7 Mar 2024 617th XenThe 🇬🇧 684 70 9ms 14 Jun 2025 618th Shanethegamer 🇺🇸 684 95 2ms 23 Jul 2021 619th Shanethegamer 🇺🇸 683 107 451ms 4 Jan 2022 620th redbeancola 682 82 11ms 11 Oct 2021 620th aksyristos 682 82 10ms 28 Feb 2023 622nd jared-hughes 681 47 35ms 25 Sep 2021 623rd TheZwierzLF 🇵🇱 681 71 44ms 45 hours ago 624th 09cf 681 82 2ms 17 days ago 625th elgan65536 681 118 134ms 23 Oct 2023 626th annaproxy 680 90 63ms 11 Dec 2022 627th yzhs 🇩🇪 680 101 113ms 18 Jan 2020 628th MeWhenI 🇻🇦 679 80 2ms 12 Nov 2022 629th Shanethegamer 🇺🇸 679 95 4ms 19 Oct 2024 630th Natanaelel 🇸🇪 678 63 2ms 29 Aug 2022 631st Shanethegamer 🇺🇸 678 68 1,108ms 2 Jul 2021 632nd SmartK8 🇨🇿 677 95 351ms 29 Oct 2022 633rd SirBogman 🇺🇸 675 66 226ms 5 Oct 2020 634th Shanethegamer 🇺🇸 675 67 456ms 2 Jul 2021 635th didion0 🇺🇸 674 71 9ms 9 Feb 2021 636th kevinmchung 674 83 10ms 1 Mar 2018 636th myfatemi04 674 83 10ms 1 Mar 2018 636th dzhang314 674 83 17ms 14 Aug 2019 636th GolfingSuccess 🇬🇷 674 83 15ms 6 May 2022 636th glesnick 674 83 11ms 15 Jul 2022 First Prev 561–640 of 2,056 Next Last