The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Inventory Sequence 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 561st Natanaelel 🇸🇪 784 63 10ms 21 Jul 2023 562nd edsrzf 🇳🇿 784 75 4ms 10 Nov 2025 563rd 09cf 783 32 5ms 5 Sep 2023 563rd mousetail 🇳🇱 783 32 4ms 15 Mar 2024 563rd MeWhenI 🇻🇦 783 32 5ms 17 Feb 2025 566th guilhem-roy 🇫🇷 783 63 35ms 21 Nov 2022 566th nstearns96 🇬🇧 783 63 31ms 6 Jan 2023 566th Tess2662 783 63 10ms 4 Mar 2023 566th 051 🇸🇬 783 63 15ms 24 Dec 2023 566th lhulinsky 783 63 34ms 23 Oct 2024 566th croc54 783 63 46ms 8 Jan 2025 566th andrewjc2000 783 63 36ms 29 Jul 2025 566th KasperKivimaeki 🇫🇮 783 63 29ms 25 Oct 2025 574th bac0id 783 74 2ms 27 Sep 2023 575th Shanethegamer 🇺🇸 783 120 30ms 27 Dec 2022 576th Andriamanitra 🇫🇮 782 49 1,021ms 18 Oct 2023 577th albanian-laundromat 781 56 726ms 22 Sep 2025 578th dokutan 781 60 393ms 21 Aug 2024 579th sean-niemann 🇺🇸 780 50 136ms 19 May 2025 580th Alessandro-Balconi 🇮🇹 780 63 82ms 12 Jul 2023 581st Irratix 🇳🇱 780 98 78ms 3 Aug 2023 581st Emutis 🇱🇹 780 98 69ms 15 Aug 2025 583rd Shanethegamer 🇺🇸 776 80 2ms 19 Nov 2022 584th MeWhenI 🇻🇦 776 85 4,144ms 24 Oct 2024 585th albanian-laundromat 775 80 40ms 2 Sep 2025 586th DialFrost 🇸🇬 774 53 297ms 30 Jul 2024 587th msbranicky 774 178 1,674ms 16 Sep 2025 588th GrayJoKing 🇦🇺 773 83 309ms 26 Jun 2023 589th BambooleanLogic 🇸🇪 772 64 9ms 2 Dec 2022 589th tayloia 🇬🇧 772 64 9ms 9 Jan 2023 589th Argeento 🇵🇱 772 64 10ms 29 Aug 2023 592nd MeWhenI 🇻🇦 772 84 98ms 24 Nov 2022 593rd Shanethegamer 🇺🇸 772 112 26ms 22 Nov 2022 594th jerrandolph 772 123 264ms 21 Dec 2023 595th CedricGebistorf 771 64 36ms 4 May 2023 595th cros107 🇦🇺 771 64 35ms 5 Oct 2023 595th logvp 771 64 31ms 3 Jan 2024 595th namelessiw 771 64 32ms 10 Jan 2024 595th jmfk 771 64 40ms 5 Apr 2024 595th hiichbindermax 771 64 36ms 4 Sep 2024 601st janbehrens 🇩🇪 769 42 3ms 20 Nov 2022 601st SirBogman 🇺🇸 769 42 2ms 22 Nov 2022 603rd Shanethegamer 🇺🇸 769 47 41ms 31 Jan 2023 603rd olleicua 🇺🇸 769 47 52ms 5 Jan 2024 605th commandblockguy 🇺🇸 768 61 377ms 15 Jan 2024 605th KatieLG 🇬🇧 768 61 359ms 19 Oct 2025 607th MeWhenI 🇻🇦 766 81 2ms 22 Jul 2024 607th frosster 766 81 2ms 16 Mar 2025 609th GolfingSuccess 🇬🇷 762 63 10ms 19 Dec 2024 610th strout 762 85 140ms 14 Dec 2023 611th mrnomm 759 65 16ms 6 Apr 2023 611th suwat513 759 65 37ms 19 Jun 2023 611th neihousaigaai 759 65 14ms 13 Feb 2024 611th Stockoh 🇫🇷 759 65 38ms 26 Apr 2024 611th willschremmer 759 65 21ms 11 May 2024 611th CLOStrophobic 🇮🇹 759 65 10ms 31 Jan 2025 611th JunkIce 759 65 14ms 13 Feb 2025 611th TheZwierzLF 🇵🇱 759 65 34ms 27 May 2025 611th rucin93 🇵🇱 759 65 20ms 31 May 2025 620th MeWhenI 🇻🇦 758 53 2ms 10 Feb 2023 621st RedzGoose 🇦🇺 755 62 447ms 10 Sep 2024 622nd KatieLG 🇬🇧 753 48 61ms 1 Sep 2024 623rd yeminghan2021 750 102 62ms 1 Feb 2025 624th Natanaelel 🇸🇪 748 36 161ms 20 Feb 2023 625th jared-hughes 748 50 13ms 22 Nov 2022 626th bac0id 748 66 10ms 30 Jun 2024 626th CaedenHarper 🇨🇦 748 66 9ms 23 Aug 2025 626th snoozingnewt 🇨🇦 748 66 9ms 13 Oct 2025 626th iczelia 🇩🇪 748 66 10ms 23 Oct 2025 630th mdnestor 747 66 38ms 23 Dec 2022 630th jared-hughes 747 66 12ms 16 Mar 2023 630th fgrosshans 🇫🇷 747 66 41ms 14 Jul 2024 630th codingisgreatbutiamnot 747 66 39ms 9 Aug 2024 630th hellwue 747 66 39ms 4 Sep 2024 630th iczelia 🇩🇪 747 66 41ms 23 Oct 2025 636th msbranicky 747 74 2ms 10 Oct 2023 637th blaztoma 🇱🇹 744 54 2ms 2 Sep 2025 638th Babafaba 742 78 2ms 14 Oct 2025 639th MichalMarsalek 🇨🇿 741 89 359ms 20 Nov 2022 640th snoozingnewt 🇨🇦 739 84 2ms 13 Oct 2025 First Prev 561–640 of 1,612 Next Last