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 476th moustave 736 76 10ms 15 Jul 2025 482nd ovs-code 🇩🇪 735 76 2ms 3 Jun 2024 483rd MeWhenI 🇻🇦 735 80 117ms 17 Nov 2022 484th retrohun 734 78 12ms 25 Sep 2022 485th MeWhenI 🇻🇦 733 174 461ms 9 Feb 2025 486th emgordon154 732 63 807ms 3 Jun 2025 487th Shanethegamer 🇺🇸 732 73 378ms 8 Oct 2024 488th MeWhenI 🇻🇦 731 88 332ms 17 Nov 2022 488th tomtheisen 🇺🇸 731 88 334ms 15 Dec 2022 490th bstrat 727 44 2ms 19 Jun 2024 491st SirBogman 🇺🇸 726 77 11ms 4 Dec 2022 491st YAJUE114514 726 77 9ms 30 Jul 2025 491st blaztoma 🇱🇹 726 77 9ms 26 days ago 491st CornerMercury 🇬🇧 726 77 10ms 25 days ago 495th Irratix 🇳🇱 726 81 108ms 26 Dec 2020 496th tomtheisen 🇺🇸 725 66 10ms 12 Oct 2020 496th Attero 🇸🇪 725 66 9ms 21 Oct 2020 496th NewDefectus 🇮🇱 725 66 9ms 9 Nov 2021 496th Argeento 🇵🇱 725 66 9ms 28 Dec 2021 496th MeWhenI 🇻🇦 725 66 9ms 17 Nov 2022 496th GrayJoKing 🇦🇺 725 66 9ms 24 Jan 2023 496th Yax42 🇫🇷 725 66 9ms 13 Sep 2025 503rd AlephSquirrel 725 77 2ms 25 May 2020 503rd NewDefectus 🇮🇱 725 77 2ms 9 Nov 2021 503rd lynn 725 77 2ms 30 Nov 2021 503rd MeWhenI 🇻🇦 725 77 1ms 17 Nov 2022 503rd BlankSpruce 725 77 2ms 8 Aug 2024 508th dpatterbee 725 136 275ms 23 Nov 2020 509th kg583 🇺🇸 724 106 8ms 30 Jul 2025 510th cure-honey 🇯🇵 724 111 124ms 10 Jul 2021 511th stefangimmillaro 723 93 100ms 20 Oct 2022 512th SirBogman 🇺🇸 723 95 115ms 17 Jun 2020 513th greghull 721 67 32ms 9 Nov 2017 513th Natanaelel 🇸🇪 721 67 36ms 2 Nov 2021 515th Shanethegamer 🇺🇸 721 100 374ms 13 Dec 2022 516th MeWhenI 🇻🇦 720 160 2ms 21 Apr 2024 517th juliansiebert 🇩🇪 719 67 222ms 1 Aug 2022 517th IISResetMe 719 67 260ms 7 Apr 2025 519th hoodadam 717 78 10ms 31 Jan 2020 519th hiddicop 🇸🇪 717 78 10ms 31 Jan 2021 519th sleepyStick 717 78 10ms 8 Dec 2021 519th annaproxy 717 78 11ms 6 Feb 2022 519th cubed-guy 717 78 10ms 12 Feb 2022 519th Fracture17 717 78 9ms 4 Apr 2023 519th commandblockguy 🇺🇸 717 78 10ms 7 Apr 2023 519th steffan-polygolf 717 78 10ms 21 Feb 2024 519th Yewzir 🇧🇪 717 78 10ms 5 Jun 2024 519th jatloe 717 78 9ms 29 Oct 2024 519th snydej 717 78 10ms 21 Nov 2024 519th Lv0Sys 🇵🇱 717 78 10ms 20 days ago 531st ian-h-chamberlain 🇺🇸 717 112 153ms 16 Jan 2020 531st stefangimmillaro 717 112 123ms 16 Nov 2024 531st emgordon154 717 112 251ms 10 Sep 2025 534th prplz 🇦🇺 716 78 1ms 26 Apr 2019 534th Attero 🇸🇪 716 78 2ms 23 May 2020 534th Alex-x90 🇺🇸 716 78 2ms 24 Jan 2023 534th JohandeRuiter 🇳🇱 716 78 2ms 30 Nov 2023 538th janbehrens 🇩🇪 716 80 5ms 28 Nov 2023 539th CatsAreFluffy 715 58 53ms 18 Feb 2023 540th thisishowmymindworks 🇳🇴 714 67 9ms 9 Sep 2020 540th itsh01 714 67 9ms 4 Sep 2022 540th inventshah 714 67 9ms 23 Jan 2023 540th Alex-x90 🇺🇸 714 67 8ms 24 Jan 2023 540th helbling 🇨🇭 714 67 9ms 3 Jun 2024 545th kritixilithos 714 76 1ms 27 May 2024 546th stefangimmillaro 714 84 95ms 14 Mar 2023 547th GalladeGuy 🇺🇸 714 91 2ms 12 Apr 2019 547th Waffle3z 714 91 2ms 24 Oct 2020 549th BREMAUCY 🇫🇷 713 75 359ms 1 Nov 2025 550th chunes3 🇺🇸 713 100 72ms 17 Sep 2023 551st JOrE20 🇺🇸 713 219 7ms 17 days ago 552nd janbehrens 🇩🇪 713 352 11ms 2 Aug 2023 553rd Shanethegamer 🇺🇸 712 97 79ms 25 Oct 2022 554th emgordon154 712 179 473ms 11 Jul 2025 555th Natanaelel 🇸🇪 711 45 2ms 21 Jan 2022 555th Natanaelel 🇸🇪 711 45 36ms 22 Jan 2024 557th emgordon154 711 68 48ms 19 Nov 2025 558th Sp3000 🇦🇺 710 57 3ms 12 Jan 2024 559th Attero 🇸🇪 710 69 6ms 20 Sep 2023 560th edsrzf 🇳🇿 710 108 8ms 8 Jan 2025 First Prev 481–560 of 2,055 Next Last