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 401st nwellnhof 🇩🇪 776 70 1ms 16 Jul 2022 402nd sisyphus-ppcg 🇦🇺 776 72 2ms 22 Jan 2023 402nd inventshah 776 72 2ms 24 Jan 2023 404th janbehrens 🇩🇪 776 127 292ms 28 Nov 2023 405th neel11235813 775 69 344ms 15 Jan 2024 405th bizy-coder 775 69 345ms 17 Jan 2024 405th MeWhenI 🇻🇦 775 69 337ms 17 Jan 2024 405th CaedenHarper 🇨🇦 775 69 342ms 29 Jul 2025 409th IanUtley 775 79 8ms 26 Apr 2024 410th GrayJoKing 🇦🇺 774 88 40ms 23 Jan 2023 410th 386asm 🇺🇸 774 88 37ms 7 May 2023 412th jared-hughes 772 62 9ms 7 Mar 2022 412th janbehrens 🇩🇪 772 62 9ms 28 Nov 2023 414th SirBogman 🇺🇸 771 46 44ms 5 Oct 2022 415th jared-hughes 770 95 418ms 24 Jun 2022 416th steffan-polygolf 769 78 80ms 21 Feb 2024 417th error256 767 93 68ms 19 Jun 2025 418th dirckvdende 766 73 9ms 18 Jul 2025 419th jared-hughes 765 73 2ms 16 Mar 2022 420th namelessiw 765 84 358ms 7 Jun 2024 420th stefangimmillaro 765 84 384ms 20 Oct 2025 422nd timvermeulen 765 105 126ms 5 Jan 2020 422nd snobee 🇨🇦 765 105 151ms 12 Dec 2022 424th lynn 763 93 488ms 1 Mar 2022 425th DialFrost 🇸🇬 762 42 35ms 25 Jan 2023 426th cure-honey 🇯🇵 761 82 38ms 9 Jul 2021 427th voytxt 🇨🇿 760 63 8ms 1 Apr 2024 427th neel11235813 760 63 8ms 1 Apr 2024 427th duckyluuk 🇳🇱 760 63 9ms 5 Apr 2024 430th inventshah 759 73 2ms 11 Sep 2022 431st MeWhenI 🇻🇦 758 75 131ms 3 Aug 2024 432nd edsrzf 🇳🇿 756 58 682ms 12 days ago 433rd Attero 🇸🇪 756 74 10ms 30 Oct 2020 433rd AlephSquirrel 756 74 13ms 24 Jan 2023 433rd stefangimmillaro 756 74 10ms 11 Mar 2023 433rd Shanethegamer 🇺🇸 756 74 9ms 8 Oct 2024 437th primo-ppcg 🇹🇭 756 134 1,696ms 9 Jun 2024 438th vonagam 755 64 35ms 9 Nov 2017 438th Waffle3z 755 64 39ms 22 Jan 2021 438th yzhs 🇩🇪 755 64 35ms 20 Jul 2022 441st sean-niemann 🇺🇸 754 60 262ms 1 Jan 2024 442nd janbehrens 🇩🇪 754 97 402ms 29 Nov 2023 442nd Herbert00709 🇵🇱 754 97 72ms 15 Nov 2024 444th Babafaba 753 71 331ms 6 Nov 2025 445th MeWhenI 🇻🇦 753 131 287ms 27 Aug 2023 446th nullie 751 107 150ms 12 Mar 2025 447th somebody1234 748 64 9ms 28 Mar 2018 447th prplz 🇦🇺 748 64 8ms 1 Dec 2020 449th MeWhenI 🇻🇦 748 74 2ms 17 Nov 2022 450th janbehrens 🇩🇪 748 86 335ms 28 Nov 2023 451st lynn 747 82 8ms 8 Dec 2021 452nd emgordon154 747 95 412ms 8 Jun 2025 453rd MeWhenI 🇻🇦 746 98 54ms 17 Nov 2022 453rd m-tkach 🇺🇦 746 98 80ms 15 Dec 2022 453rd Alex-x90 🇺🇸 746 98 64ms 28 Sep 2023 456th vishwathg 745 75 10ms 3 Apr 2023 456th janbehrens 🇩🇪 745 75 10ms 28 Nov 2023 456th janbehrens 🇩🇪 745 75 2ms 29 Nov 2023 456th BREMAUCY 🇫🇷 745 75 10ms 1 Nov 2025 460th Yewzir 🇧🇪 745 103 8ms 24 Dec 2023 461st jared-hughes 744 77 72ms 19 Jul 2022 461st rucin93 🇵🇱 744 77 64ms 12 Oct 2025 463rd janbehrens 🇩🇪 743 65 42ms 30 May 2022 463rd tatzyr 🇯🇵 743 65 52ms 25 Nov 2024 465th janbehrens 🇩🇪 742 66 5ms 28 Nov 2023 466th AlephSquirrel 742 72 525ms 21 Jan 2024 467th MeWhenI 🇻🇦 742 95 492ms 7 Nov 2025 468th clockworknazo 742 100 3ms 6 Mar 2023 469th cure-honey 🇯🇵 741 133 292ms 9 Jul 2021 470th iznax 739 87 304ms 21 Nov 2021 471st MeepMoop 739 88 2ms 9 Apr 2025 472nd janbehrens 🇩🇪 739 96 459ms 28 Nov 2023 473rd Shanethegamer 🇺🇸 738 75 2ms 11 Sep 2022 474th dunkyl 738 89 1,295ms 16 Nov 2023 475th Maznek 736 65 10ms 25 Jun 2023 476th daedals 736 76 10ms 14 May 2019 476th petar-donchev 736 76 10ms 8 Sep 2019 476th jared-hughes 736 76 9ms 10 Sep 2022 476th betaveros 736 76 10ms 31 Dec 2022 476th stertooy 🇧🇪 736 76 9ms 14 Jun 2024 First Prev 401–480 of 2,055 Next Last