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 78th Steffan153 🇫🇮 941 53 1ms 21 Feb 2024 78th rucin93 🇵🇱 941 53 2ms 11 Jul 2024 83rd xnor-gate 940 73 110ms 24 Dec 2021 83rd lynn 940 73 110ms 25 Dec 2021 85th sean-niemann 🇺🇸 940 75 476ms 24 Sep 2025 85th JayXon 🇺🇸 940 75 453ms 25 Sep 2025 85th nwellnhof 🇩🇪 940 75 473ms 25 Sep 2025 88th Lydxn 🇨🇦 939 59 2ms 5 Feb 2023 88th JayXon 🇺🇸 939 59 2ms 5 Feb 2023 88th sean-niemann 🇺🇸 939 59 2ms 7 Aug 2024 88th Steffan153 🇫🇮 939 59 2ms 7 Aug 2024 92nd primo-ppcg 🇹🇭 939 61 67ms 20 Nov 2019 93rd sean-niemann 🇺🇸 938 56 4ms 10 Jan 2025 94th primo-ppcg 🇹🇭 937 58 2ms 7 Nov 2022 94th Lydxn 🇨🇦 937 58 1ms 28 Feb 2023 94th sean-niemann 🇺🇸 937 58 2ms 17 Nov 2023 94th Steffan153 🇫🇮 937 58 2ms 21 Feb 2024 98th JayXon 🇺🇸 937 64 95ms 15 Apr 2023 99th nwellnhof 🇩🇪 937 78 75ms 3 Jan 2022 99th primo-ppcg 🇹🇭 937 78 68ms 18 Jan 2022 99th JayXon 🇺🇸 937 78 83ms 24 Jan 2023 99th Lydxn 🇨🇦 937 78 82ms 5 Feb 2023 99th sean-niemann 🇺🇸 937 78 63ms 17 Nov 2023 99th Steffan153 🇫🇮 937 78 70ms 21 Feb 2024 99th rucin93 🇵🇱 937 78 63ms 11 Jul 2024 99th KasperKivimaeki 🇫🇮 937 78 71ms 26 Oct 2025 107th canissimia 🇦🇶 936 58 3ms 6 Jul 2022 108th JayXon 🇺🇸 934 86 124ms 11 Mar 2022 109th ovs-code 🇩🇪 933 38 48ms 14 Jun 2024 110th JayXon 🇺🇸 933 63 97ms 30 Sep 2021 111th nwellnhof 🇩🇪 932 60 10ms 21 Sep 2021 111th xnor-gate 932 60 10ms 9 May 2022 111th Lydxn 🇨🇦 932 60 17ms 5 Feb 2023 111th KasperKivimaeki 🇫🇮 932 60 11ms 14 hours ago 115th JayXon 🇺🇸 932 61 131ms 12 Dec 2024 116th Lydxn 🇨🇦 932 69 370ms 21 Nov 2021 116th nwellnhof 🇩🇪 932 69 316ms 8 Dec 2021 116th Steffan153 🇫🇮 932 69 353ms 7 Aug 2024 119th rucin93 🇵🇱 931 60 2ms 20 Nov 2024 119th kaurakeksi 🇫🇮 931 60 2ms 1 Jan 2025 121st Lydxn 🇨🇦 929 70 2ms 30 Nov 2021 121st JayXon 🇺🇸 929 70 2ms 27 Jan 2023 123rd btnlq 928 66 331ms 5 Jan 2022 124th ovs-code 🇩🇪 927 68 93ms 26 May 2024 125th primo-ppcg 🇹🇭 926 52 243ms 5 Jun 2020 125th prplz 🇦🇺 926 52 271ms 7 Jun 2020 125th btnlq 926 52 238ms 16 Dec 2020 128th JayXon 🇺🇸 926 64 3,635ms 13 Nov 2024 129th JayXon 🇺🇸 925 71 1,235ms 14 Nov 2023 130th Irratix 🇳🇱 925 79 74ms 23 May 2022 131st primo-ppcg 🇹🇭 924 78 128ms 20 Nov 2019 131st JayXon 🇺🇸 924 78 123ms 9 Mar 2023 133rd lyphyser 922 45 51ms 31 Jul 2023 134th primo-ppcg 🇹🇭 922 50 1,103ms 24 Mar 2021 135th m-tkach 🇺🇦 922 58 3,215ms 21 Jan 2024 135th pardouin 🇫🇷 922 58 3,214ms 23 Jun 2024 137th JayXon 🇺🇸 922 77 454ms 24 Jan 2023 137th Lydxn 🇨🇦 922 77 434ms 5 Feb 2023 137th sean-niemann 🇺🇸 922 77 469ms 17 Nov 2023 137th Steffan153 🇫🇮 922 77 443ms 21 Jul 2024 141st btnlq 921 57 4ms 29 Aug 2024 142nd primo-ppcg 🇹🇭 921 70 4ms 16 Aug 2023 143rd JayXon 🇺🇸 921 73 100ms 24 Jan 2023 143rd Lydxn 🇨🇦 921 73 100ms 5 Feb 2023 143rd sean-niemann 🇺🇸 921 73 99ms 7 Aug 2024 143rd Steffan153 🇫🇮 921 73 98ms 7 Aug 2024 147th JayXon 🇺🇸 921 75 79ms 7 Apr 2023 148th kg583 🇺🇸 921 82 5ms 8 Oct 2024 149th JayXon 🇺🇸 921 107 280ms 14 Nov 2023 150th sean-niemann 🇺🇸 920 74 37ms 23 Jun 2025 151st primo-ppcg 🇹🇭 918 68 39ms 23 May 2020 152nd KasperKivimaeki 🇫🇮 918 70 446ms 14 hours ago 153rd lynn 917 61 9ms 10 Mar 2021 153rd zacjl 917 61 9ms 4 Oct 2024 153rd Seek64 🇩🇪 917 61 9ms 23 days ago 156th Lydxn 🇨🇦 916 81 3ms 28 Feb 2023 157th Irratix 🇳🇱 915 61 2ms 23 May 2022 158th ngn 🇧🇬 914 35 2ms 13 Jan 2022 158th 4hg 🇺🇸 914 35 34ms 21 Jul 2023 158th 2bular 914 35 2ms 20 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