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 401st MeWhenI 🇻🇦 772 62 1ms 10 Oct 2023 402nd error256 771 91 68ms 19 Jun 2025 403rd MarcMush 🇫🇷 770 55 373ms 13 Jan 2022 404th primo-ppcg 🇹🇭 769 39 13ms 10 Feb 2022 404th DialFrost 🇸🇬 769 39 35ms 26 Jan 2023 406th emplv 🇱🇻 769 68 130ms 28 Mar 2025 407th sisyphus-ppcg 🇦🇺 769 70 2ms 22 Jan 2023 407th inventshah 769 70 2ms 24 Jan 2023 409th IanUtley 769 77 8ms 26 Apr 2024 410th GrayJoKing 🇦🇺 769 86 40ms 23 Jan 2023 410th 386asm 🇺🇸 769 86 37ms 7 May 2023 412th SirBogman 🇺🇸 767 58 37ms 4 Dec 2022 413th marcin7Cd 767 69 9ms 27 Dec 2020 413th annaproxy 767 69 10ms 8 Jun 2022 413th jakobkordez 🇸🇮 767 69 10ms 28 Oct 2022 413th OwPowell 767 69 10ms 18 Dec 2023 413th ImpressedByRocks 767 69 9ms 6 Sep 2025 413th snoozingnewt 🇨🇦 767 69 14ms 20 Nov 2025 419th jared-hughes 765 93 418ms 24 Jun 2022 420th jared-hughes 764 60 9ms 7 Mar 2022 420th janbehrens 🇩🇪 764 60 9ms 28 Nov 2023 422nd sisyphus-ppcg 🇦🇺 764 90 3ms 6 Feb 2023 422nd ovs-code 🇩🇪 764 90 3ms 7 Feb 2023 422nd DialFrost 🇸🇬 764 90 2ms 3 Feb 2025 425th steffan-polygolf 762 76 80ms 21 Feb 2024 426th timvermeulen 761 103 126ms 5 Jan 2020 426th snobee 🇨🇦 761 103 151ms 12 Dec 2022 428th tomtheisen 🇺🇸 760 82 342ms 15 Dec 2022 429th jared-hughes 758 71 2ms 16 Mar 2022 430th lynn 758 91 488ms 1 Mar 2022 431st RDShah 757 70 9ms 11 Apr 2021 431st Artemis21 🇬🇧 757 70 11ms 21 Jan 2025 431st HumanoidCPU 757 70 10ms 11 Feb 2025 431st albanian-laundromat 757 70 9ms 18 Sep 2025 435th somebody1234 755 48 3ms 28 Mar 2018 436th cure-honey 🇯🇵 755 80 38ms 9 Jul 2021 437th Shanethegamer 🇺🇸 754 59 37ms 20 Aug 2021 438th voytxt 🇨🇿 752 61 8ms 1 Apr 2024 438th neel11235813 752 61 8ms 1 Apr 2024 438th duckyluuk 🇳🇱 752 61 9ms 5 Apr 2024 441st inventshah 752 71 2ms 11 Sep 2022 442nd primo-ppcg 🇹🇭 752 132 1,696ms 9 Jun 2024 443rd Yewzir 🇧🇪 750 65 354ms 20 Feb 2024 444th janbehrens 🇩🇪 749 95 402ms 29 Nov 2023 444th Herbert00709 🇵🇱 749 95 72ms 15 Nov 2024 446th MeWhenI 🇻🇦 749 129 287ms 27 Aug 2023 447th edsrzf 🇳🇿 747 56 682ms 13 days ago 448th thisishowmymindworks 🇳🇴 746 71 10ms 5 Sep 2020 448th RaBa21 🇭🇺 746 71 9ms 21 Jul 2025 450th MeWhenI 🇻🇦 746 93 492ms 7 Nov 2025 451st nullie 746 105 150ms 12 Mar 2025 452nd proton 🇩🇪 742 60 37ms 9 Jun 2020 452nd jaredcrystal 🇺🇸 742 60 41ms 14 Dec 2020 454th janbehrens 🇩🇪 742 84 335ms 28 Nov 2023 455th emgordon154 742 93 412ms 8 Jun 2025 456th SirBogman 🇺🇸 741 44 44ms 5 Oct 2022 457th MeWhenI 🇻🇦 741 72 2ms 17 Nov 2022 458th MeWhenI 🇻🇦 741 96 54ms 17 Nov 2022 458th m-tkach 🇺🇦 741 96 80ms 15 Dec 2022 458th Alex-x90 🇺🇸 741 96 64ms 28 Sep 2023 461st somebody1234 740 62 9ms 28 Mar 2018 461st prplz 🇦🇺 740 62 8ms 1 Dec 2020 463rd edsrzf 🇳🇿 740 93 42ms 14 Nov 2025 464th GolfingSuccess 🇬🇷 739 66 344ms 25 Jan 2025 464th CaedenHarper 🇨🇦 739 66 344ms 29 Jul 2025 466th ovs-code 🇩🇪 738 73 1ms 18 Nov 2023 466th janbehrens 🇩🇪 738 73 2ms 29 Nov 2023 468th stefangimmillaro 738 94 428ms 6 Oct 2025 469th jared-hughes 737 75 72ms 19 Jul 2022 469th rucin93 🇵🇱 737 75 64ms 12 Oct 2025 471st cure-honey 🇯🇵 737 131 292ms 9 Jul 2021 472nd rak1507 🇬🇧 736 72 11ms 10 Mar 2021 472nd AlephSquirrel 736 72 13ms 24 Jan 2023 472nd wh3n3v3r 🇨🇿 736 72 12ms 13 Nov 2024 475th janbehrens 🇩🇪 734 64 5ms 28 Nov 2023 476th janbehrens 🇩🇪 734 94 459ms 28 Nov 2023 477th iznax 733 85 304ms 21 Nov 2021 478th MeepMoop 733 86 2ms 9 Apr 2025 479th dunkyl 732 87 1,295ms 16 Nov 2023 480th Shanethegamer 🇺🇸 731 73 2ms 11 Sep 2022 First Prev 401–480 of 2,038 Next Last