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 chars. 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 Chars Time Submitted 641st jared-hughes 667 45 35ms 25 Sep 2021 642nd kmathis22 667 104 451ms 10 days ago 643rd timvermeulen 666 87 109ms 19 Jan 2020 644th steffan-polygolf 665 49 54ms 21 Feb 2024 645th didion0 🇺🇸 665 69 9ms 9 Feb 2021 646th inventshah 665 76 199ms 6 Jul 2022 647th Jasper-Ty 🇵🇭 665 81 1ms 23 Apr 2022 647th jupj 🇫🇮 665 81 2ms 8 Oct 2022 649th Shanethegamer 🇺🇸 665 93 80ms 13 Dec 2022 650th D-MOVE 🇵🇭 664 67 48ms 9 days ago 651st verticallity 664 118 142ms 7 Apr 2022 652nd steffan-polygolf 663 95 2ms 14 Feb 2024 652nd FlyingPenguin223 663 95 1ms 10 Mar 2025 654th MeWhenI 🇻🇦 662 64 293ms 15 Feb 2023 655th redbeancola 662 80 11ms 11 Oct 2021 655th QuincyNash 🇺🇸 662 80 11ms 29 Nov 2022 655th aksyristos 662 80 10ms 28 Feb 2023 655th 2011-Chan-Ethan 662 80 18ms 9 Jul 2023 655th FlorianCassayre 🇫🇷 662 80 10ms 18 Sep 2023 660th madeforlosers 661 100 39ms 7 May 2024 661st boxjelly 660 101 114ms 6 Jan 2021 661st the-zammers 660 101 132ms 15 Dec 2023 661st Awsute 660 101 119ms 20 Aug 2024 664th SirBogman 🇺🇸 659 74 444ms 16 Jan 2024 665th yzhs 🇩🇪 658 67 1,222ms 3 Aug 2021 666th stefangimmillaro 658 87 3,648ms 15 Nov 2024 667th DialFrost 🇸🇬 658 94 90ms 27 May 2024 668th Yewzir 🇧🇪 658 151 2,381ms 8 May 2024 669th Secozzi 657 82 2ms 14 Mar 2021 669th madex 🇩🇪 657 82 2ms 2 Aug 2021 671st DialFrost 🇸🇬 657 147 265ms 29 Nov 2023 671st Yewzir 🇧🇪 657 147 285ms 3 Jan 2024 673rd SirBogman 🇺🇸 655 54 160ms 23 Jan 2024 674th weliveinhell 🇭🇹 655 70 9ms 30 Sep 2023 674th unfinishedprogram 655 70 8ms 27 Oct 2023 674th stefangimmillaro 655 70 9ms 12 Sep 2024 677th kevinmchung 654 81 10ms 1 Mar 2018 677th myfatemi04 654 81 10ms 1 Mar 2018 677th dzhang314 654 81 17ms 14 Aug 2019 677th glesnick 654 81 11ms 15 Jul 2022 677th ahmetdemirag 🇨🇾 654 81 9ms 8 Feb 2025 677th andrewjc2000 654 81 9ms 31 Jul 2025 683rd lifthrasiir 🇰🇷 652 46 2ms 29 Nov 2024 684th Shanethegamer 🇺🇸 652 65 456ms 2 Jul 2021 685th Yewzir 🇧🇪 651 82 2ms 28 Mar 2024 686th commandblockguy 🇺🇸 650 75 631ms 15 Jan 2024 686th dokutan 650 75 386ms 15 May 2024 688th PsychoTea 649 96 333ms 21 Nov 2021 689th mathisfun271 646 82 16ms 13 Feb 2024 689th qpwoeirut 646 82 9ms 18 Sep 2025 691st dokutan 646 113 7ms 2 Jul 2024 692nd TheZwierzLF 🇵🇱 645 69 44ms 45 hours ago 693rd marshallward 🇺🇸 643 94 39ms 8 Jul 2021 694th steffan-polygolf 642 76 388ms 7 Mar 2024 694th Jacob385 642 76 364ms 9 Apr 2024 696th Shanethegamer 🇺🇸 640 151 285ms 26 Mar 2022 697th dokutan 639 51 42ms 3 Nov 2024 698th emgordon154 638 47 2ms 18 Nov 2025 699th elephantpanda 638 83 9ms 31 Aug 2022 700th edsrzf 🇳🇿 637 98 4ms 10 Nov 2024 701st MeWhenI 🇻🇦 637 100 1,227ms 19 Jun 2023 702nd Shanethegamer 🇺🇸 636 165 62ms 25 Jul 2021 703rd MeWhenI 🇻🇦 635 87 5ms 18 Nov 2023 704th Shanethegamer 🇺🇸 634 116 5ms 30 Aug 2024 705th Shanethegamer 🇺🇸 633 85 1ms 4 Jan 2022 705th elgan65536 633 85 2ms 24 Oct 2023 707th janbehrens 🇩🇪 632 67 332ms 9 Nov 2021 708th galloj 🇨🇿 632 80 1ms 30 Aug 2022 709th Shanethegamer 🇺🇸 632 124 147ms 13 Dec 2022 709th unfinishedprogram 632 124 149ms 23 Aug 2023 711th Lydxn 🇨🇦 631 110 367ms 31 Oct 2021 711th Shanethegamer 🇺🇸 631 110 435ms 25 Sep 2025 713th DialFrost 🇸🇬 631 199 448ms 8 Mar 2025 714th stefangimmillaro 629 96 38ms 23 Aug 2024 715th user189032 629 106 112ms 29 May 2019 716th alexsave 628 73 9ms 14 days ago 717th Shanethegamer 🇺🇸 627 119 42ms 28 Sep 2024 718th namelessiw 625 78 554ms 6 May 2024 719th MeWhenI 🇻🇦 624 67 679ms 15 Sep 2025 720th geofft 623 85 9ms 12 Dec 2020 First Prev 641–720 of 2,036 Next Last