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 BREMAUCY 🇫🇷 668 73 355ms 1 Nov 2025 642nd jared-hughes 667 45 35ms 25 Sep 2021 643rd kmathis22 667 104 451ms 11 days ago 644th timvermeulen 666 87 109ms 19 Jan 2020 645th steffan-polygolf 665 49 54ms 21 Feb 2024 646th didion0 🇺🇸 665 69 9ms 9 Feb 2021 647th inventshah 665 76 199ms 6 Jul 2022 648th Jasper-Ty 🇵🇭 665 81 1ms 23 Apr 2022 648th jupj 🇫🇮 665 81 2ms 8 Oct 2022 650th Shanethegamer 🇺🇸 665 93 80ms 13 Dec 2022 651st D-MOVE 🇵🇭 664 67 48ms 9 days ago 652nd verticallity 664 118 142ms 7 Apr 2022 653rd steffan-polygolf 663 95 2ms 14 Feb 2024 653rd FlyingPenguin223 663 95 1ms 10 Mar 2025 655th MeWhenI 🇻🇦 662 64 293ms 15 Feb 2023 656th redbeancola 662 80 11ms 11 Oct 2021 656th QuincyNash 🇺🇸 662 80 11ms 29 Nov 2022 656th aksyristos 662 80 10ms 28 Feb 2023 656th 2011-Chan-Ethan 662 80 18ms 9 Jul 2023 656th FlorianCassayre 🇫🇷 662 80 10ms 18 Sep 2023 661st madeforlosers 661 100 39ms 7 May 2024 662nd boxjelly 660 101 114ms 6 Jan 2021 662nd the-zammers 660 101 132ms 15 Dec 2023 662nd Awsute 660 101 119ms 20 Aug 2024 665th SirBogman 🇺🇸 659 74 444ms 16 Jan 2024 666th yzhs 🇩🇪 658 67 1,222ms 3 Aug 2021 667th stefangimmillaro 658 87 3,648ms 15 Nov 2024 668th DialFrost 🇸🇬 658 94 90ms 27 May 2024 669th Yewzir 🇧🇪 658 151 2,381ms 8 May 2024 670th Secozzi 657 82 2ms 14 Mar 2021 670th madex 🇩🇪 657 82 2ms 2 Aug 2021 672nd DialFrost 🇸🇬 657 147 265ms 29 Nov 2023 672nd Yewzir 🇧🇪 657 147 285ms 3 Jan 2024 674th SirBogman 🇺🇸 655 54 160ms 23 Jan 2024 675th weliveinhell 🇭🇹 655 70 9ms 30 Sep 2023 675th unfinishedprogram 655 70 8ms 27 Oct 2023 675th stefangimmillaro 655 70 9ms 12 Sep 2024 678th kevinmchung 654 81 10ms 1 Mar 2018 678th myfatemi04 654 81 10ms 1 Mar 2018 678th dzhang314 654 81 17ms 14 Aug 2019 678th glesnick 654 81 11ms 15 Jul 2022 678th ahmetdemirag 🇨🇾 654 81 9ms 8 Feb 2025 678th andrewjc2000 654 81 9ms 31 Jul 2025 684th lifthrasiir 🇰🇷 652 46 2ms 29 Nov 2024 685th Shanethegamer 🇺🇸 652 65 456ms 2 Jul 2021 686th Yewzir 🇧🇪 651 82 2ms 28 Mar 2024 687th commandblockguy 🇺🇸 650 75 631ms 15 Jan 2024 687th dokutan 650 75 386ms 15 May 2024 689th PsychoTea 649 96 333ms 21 Nov 2021 690th mathisfun271 646 82 16ms 13 Feb 2024 690th qpwoeirut 646 82 9ms 18 Sep 2025 692nd dokutan 646 113 7ms 2 Jul 2024 693rd TheZwierzLF 🇵🇱 645 69 44ms 47 hours ago 694th marshallward 🇺🇸 643 94 39ms 8 Jul 2021 695th steffan-polygolf 642 76 388ms 7 Mar 2024 695th Jacob385 642 76 364ms 9 Apr 2024 697th Shanethegamer 🇺🇸 640 151 285ms 26 Mar 2022 698th dokutan 639 51 42ms 3 Nov 2024 699th emgordon154 638 47 2ms 18 Nov 2025 700th elephantpanda 638 83 9ms 31 Aug 2022 701st edsrzf 🇳🇿 637 98 4ms 10 Nov 2024 702nd MeWhenI 🇻🇦 637 100 1,227ms 19 Jun 2023 703rd Shanethegamer 🇺🇸 636 165 62ms 25 Jul 2021 704th MeWhenI 🇻🇦 635 87 5ms 18 Nov 2023 705th Shanethegamer 🇺🇸 634 116 5ms 30 Aug 2024 706th Shanethegamer 🇺🇸 633 85 1ms 4 Jan 2022 706th elgan65536 633 85 2ms 24 Oct 2023 708th janbehrens 🇩🇪 632 67 332ms 9 Nov 2021 709th galloj 🇨🇿 632 80 1ms 30 Aug 2022 710th Shanethegamer 🇺🇸 632 124 147ms 13 Dec 2022 710th unfinishedprogram 632 124 149ms 23 Aug 2023 712th Lydxn 🇨🇦 631 110 367ms 31 Oct 2021 712th Shanethegamer 🇺🇸 631 110 435ms 25 Sep 2025 714th DialFrost 🇸🇬 631 199 448ms 8 Mar 2025 715th stefangimmillaro 629 96 38ms 23 Aug 2024 716th user189032 629 106 112ms 29 May 2019 717th alexsave 628 73 9ms 14 days ago 718th Shanethegamer 🇺🇸 627 119 42ms 28 Sep 2024 719th namelessiw 625 78 554ms 6 May 2024 720th MeWhenI 🇻🇦 624 67 679ms 15 Sep 2025 First Prev 641–720 of 2,038 Next Last