The Calendar hole will go live in approximately 12 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 78th Steffan153 🇫🇮 937 57 2ms 7 Aug 2024 82nd primo-ppcg 🇹🇭 937 59 67ms 20 Nov 2019 83rd sean-niemann 🇺🇸 937 74 462ms 24 Sep 2025 83rd JayXon 🇺🇸 937 74 438ms 25 Sep 2025 83rd nwellnhof 🇩🇪 937 74 470ms 25 Sep 2025 86th nwellnhof 🇩🇪 936 76 75ms 3 Jan 2022 86th primo-ppcg 🇹🇭 936 76 68ms 18 Jan 2022 86th JayXon 🇺🇸 936 76 83ms 24 Jan 2023 86th Lydxn 🇨🇦 936 76 82ms 5 Feb 2023 86th sean-niemann 🇺🇸 936 76 63ms 17 Nov 2023 86th Steffan153 🇫🇮 936 76 70ms 21 Feb 2024 86th rucin93 🇵🇱 936 76 63ms 11 Jul 2024 86th KasperKivimaeki 🇫🇮 936 76 71ms 26 Oct 2025 94th sean-niemann 🇺🇸 935 54 4ms 10 Jan 2025 95th primo-ppcg 🇹🇭 935 56 2ms 7 Nov 2022 95th Lydxn 🇨🇦 935 56 1ms 28 Feb 2023 95th sean-niemann 🇺🇸 935 56 2ms 17 Nov 2023 95th Steffan153 🇫🇮 935 56 2ms 21 Feb 2024 99th JayXon 🇺🇸 935 62 95ms 15 Apr 2023 100th sean-niemann 🇺🇸 934 56 124ms 6 Aug 2024 100th Steffan153 🇫🇮 934 56 120ms 6 Aug 2024 100th JayXon 🇺🇸 934 56 115ms 8 Aug 2024 103rd JayXon 🇺🇸 933 84 124ms 11 Mar 2022 104th AlephSquirrel 931 35 58ms 31 Dec 2022 105th JayXon 🇺🇸 931 61 97ms 30 Sep 2021 106th nwellnhof 🇩🇪 930 67 316ms 8 Dec 2021 106th Steffan153 🇫🇮 930 67 353ms 7 Aug 2024 108th m-tkach 🇺🇦 929 57 2,849ms 12 Oct 2023 108th rucin93 🇵🇱 929 57 16ms 29 Jul 2025 110th rucin93 🇵🇱 928 58 2ms 20 Nov 2024 110th kaurakeksi 🇫🇮 928 58 2ms 1 Jan 2025 112th Lydxn 🇨🇦 927 48 46ms 31 Oct 2021 112th JayXon 🇺🇸 927 48 44ms 27 Jan 2023 114th Lydxn 🇨🇦 926 68 2ms 30 Nov 2021 114th JayXon 🇺🇸 926 68 2ms 27 Jan 2023 116th btnlq 925 64 331ms 5 Jan 2022 117th JayXon 🇺🇸 924 67 78ms 7 Apr 2023 117th sean-niemann 🇺🇸 924 67 80ms 17 Nov 2023 117th Steffan153 🇫🇮 924 67 83ms 21 Feb 2024 117th Steffan153 🇫🇮 924 67 78ms 22 Feb 2024 117th ovs-code 🇩🇪 924 67 112ms 43 mins ago 122nd primo-ppcg 🇹🇭 923 50 243ms 5 Jun 2020 122nd prplz 🇦🇺 923 50 271ms 7 Jun 2020 122nd btnlq 923 50 238ms 16 Dec 2020 125th JayXon 🇺🇸 923 62 3,635ms 13 Nov 2024 126th JayXon 🇺🇸 923 69 1,235ms 14 Nov 2023 127th Irratix 🇳🇱 923 77 74ms 23 May 2022 128th primo-ppcg 🇹🇭 922 76 128ms 20 Nov 2019 128th JayXon 🇺🇸 922 76 123ms 9 Mar 2023 130th Lydxn 🇨🇦 920 53 356ms 16 Jan 2024 130th kg583 🇺🇸 920 53 360ms 20 Feb 2024 130th pardouin 🇫🇷 920 53 350ms 12 Jul 2024 133rd JayXon 🇺🇸 920 75 454ms 24 Jan 2023 133rd Lydxn 🇨🇦 920 75 434ms 5 Feb 2023 133rd sean-niemann 🇺🇸 920 75 469ms 17 Nov 2023 133rd Steffan153 🇫🇮 920 75 443ms 21 Jul 2024 137th JayXon 🇺🇸 920 105 280ms 14 Nov 2023 138th primo-ppcg 🇹🇭 919 48 1,103ms 24 Mar 2021 139th primo-ppcg 🇹🇭 919 68 4ms 16 Aug 2023 140th JayXon 🇺🇸 919 71 100ms 24 Jan 2023 140th Lydxn 🇨🇦 919 71 100ms 5 Feb 2023 140th sean-niemann 🇺🇸 919 71 99ms 7 Aug 2024 140th Steffan153 🇫🇮 919 71 98ms 7 Aug 2024 144th kg583 🇺🇸 919 80 5ms 8 Oct 2024 145th btnlq 918 55 4ms 29 Aug 2024 146th sean-niemann 🇺🇸 918 72 37ms 23 Jun 2025 147th Lydxn 🇨🇦 917 75 3ms 5 Feb 2023 148th primo-ppcg 🇹🇭 916 66 39ms 23 May 2020 149th KasperKivimaeki 🇫🇮 916 68 446ms 31 hours ago 150th xnor-gate 913 58 10ms 9 May 2022 150th btjones0 913 58 10ms 15 Jul 2022 150th Alex-x90 🇺🇸 913 58 10ms 25 Jan 2023 150th GrayJoKing 🇦🇺 913 58 10ms 1 Nov 2023 150th emgordon154 913 58 10ms 10 Sep 2025 150th KasperKivimaeki 🇫🇮 913 58 11ms 31 hours ago 156th Irratix 🇳🇱 913 59 2ms 23 May 2022 157th MeWhenI 🇻🇦 912 80 8ms 9 May 2024 157th sean-niemann 🇺🇸 912 80 7ms 18 Aug 2025 159th GrayJoKing 🇦🇺 911 77 61ms 9 days ago 160th nwellnhof 🇩🇪 911 106 295ms 29 Nov 2021 First Prev 81–160 of 2,038 Next Last