The Calendar hole will go live in approximately 8 hours. Why not try and solve it ahead of time?
Inventory Sequence 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 555th TheZwierzLF 🇵🇱 803 65 34ms 27 May 2025 555th Bmrl7 803 65 14ms 7 days ago 563rd ovs-code 🇩🇪 801 39 310ms 30 Dec 2023 564th rucin93 🇵🇱 801 53 133ms 6 Dec 2024 565th SirBogman 🇺🇸 800 25 79ms 22 Nov 2022 566th emgordon154 799 48 988ms 18 Nov 2024 567th RedzGoose 🇦🇺 799 62 411ms 10 Sep 2024 567th alemelis 799 62 1,963ms 20 Sep 2024 567th albanian-laundromat 799 62 394ms 4 Aug 2025 567th snoozingnewt 🇨🇦 799 62 466ms 10 Oct 2025 571st MeWhenI 🇻🇦 799 69 92ms 24 Nov 2022 572nd blaztoma 🇱🇹 798 119 269ms 16 Aug 2025 573rd Shanethegamer 🇺🇸 797 62 9ms 19 Nov 2022 573rd jared-hughes 797 62 10ms 16 Mar 2023 573rd raphaelimahorn 797 62 9ms 24 Mar 2023 573rd Maznek 797 62 9ms 28 Jun 2023 573rd unfinishedprogram 797 62 10ms 5 Jul 2023 578th MeWhenI 🇻🇦 797 108 137ms 22 Jul 2024 579th DialFrost 🇸🇬 796 47 13ms 25 Sep 2024 580th blaztoma 🇱🇹 796 96 61ms 17 Aug 2025 581st Shanethegamer 🇺🇸 795 83 3,246ms 28 Oct 2024 581st prestosilver 🇺🇸 795 83 120ms 2 hours ago 583rd albanian-laundromat 791 177 1,437ms 15 Oct 2025 584th mdnestor 790 66 38ms 23 Dec 2022 584th jared-hughes 790 66 12ms 16 Mar 2023 584th fgrosshans 🇫🇷 790 66 41ms 14 Jul 2024 584th codingisgreatbutiamnot 790 66 39ms 9 Aug 2024 584th hellwue 790 66 39ms 4 Sep 2024 584th iczelia 🇩🇪 790 66 41ms 23 Oct 2025 590th emplv 🇱🇻 790 82 99ms 25 Nov 2022 590th tobeannouncd 790 82 169ms 21 May 2024 592nd bac0id 790 95 376ms 30 Jun 2024 593rd 09cf 790 109 124ms 26 Sep 2023 594th rucin93 🇵🇱 789 70 17ms 26 Jul 2025 595th Natanaelel 🇸🇪 788 41 6ms 30 Dec 2022 595th o0lit3 🇺🇸 788 41 6ms 20 Jun 2023 597th MeWhenI 🇻🇦 786 46 39ms 24 Nov 2022 597th m-tkach 🇺🇦 786 46 36ms 31 Aug 2023 599th 09cf 785 33 5ms 5 Sep 2023 599th mousetail 🇳🇱 785 33 4ms 15 Mar 2024 599th MeWhenI 🇻🇦 785 33 5ms 17 Feb 2025 602nd Natanaelel 🇸🇪 784 63 10ms 21 Jul 2023 603rd bac0id 784 75 2ms 27 Sep 2023 604th Shanethegamer 🇺🇸 783 120 30ms 27 Dec 2022 605th Andriamanitra 🇫🇮 782 49 1,021ms 18 Oct 2023 606th albanian-laundromat 781 56 726ms 22 Sep 2025 607th Alessandro-Balconi 🇮🇹 780 63 82ms 12 Jul 2023 608th Irratix 🇳🇱 780 98 56ms 3 Aug 2023 608th Emutis 🇱🇹 780 98 56ms 15 Aug 2025 610th vishwathg 779 67 29ms 4 Feb 2023 610th jamesthekee 779 67 14ms 25 Jan 2025 612th albanian-laundromat 777 80 40ms 2 Sep 2025 613th msbranicky 777 178 1,674ms 16 Sep 2025 614th Shanethegamer 🇺🇸 776 80 2ms 19 Nov 2022 615th MeWhenI 🇻🇦 776 85 3,310ms 24 Oct 2024 616th DialFrost 🇸🇬 774 53 257ms 30 Jul 2024 617th namelessiw 774 64 433ms 5 Mar 2024 618th BambooleanLogic 🇸🇪 772 64 9ms 2 Dec 2022 618th tayloia 🇬🇧 772 64 9ms 9 Jan 2023 618th Argeento 🇵🇱 772 64 10ms 29 Aug 2023 621st MeWhenI 🇻🇦 772 84 98ms 24 Nov 2022 622nd Shanethegamer 🇺🇸 772 112 26ms 22 Nov 2022 623rd jerrandolph 772 123 264ms 21 Dec 2023 624th janbehrens 🇩🇪 769 42 3ms 20 Nov 2022 624th SirBogman 🇺🇸 769 42 2ms 22 Nov 2022 626th Shanethegamer 🇺🇸 769 47 41ms 31 Jan 2023 626th olleicua 🇺🇸 769 47 40ms 5 Jan 2024 628th MichalMarsalek 🇨🇿 767 68 20ms 20 Nov 2022 628th NerdyMcNerd42 767 68 14ms 22 Jan 2023 628th SB-945 767 68 14ms 19 Feb 2024 631st MeWhenI 🇻🇦 766 81 2ms 22 Jul 2024 631st frosster 766 81 3ms 16 Mar 2025 633rd GolfingSuccess 🇬🇷 762 63 10ms 19 Dec 2024 634th Stockoh 🇫🇷 762 65 426ms 24 Jun 2024 634th TheZwierzLF 🇵🇱 762 65 469ms 19 days ago 636th strout 762 85 140ms 14 Dec 2023 637th MeWhenI 🇻🇦 758 53 2ms 10 Feb 2023 638th andre-lameirinhas 🇵🇹 756 69 14ms 23 Feb 2023 638th jtaxen 756 69 16ms 30 Mar 2024 638th FranklinJiaChen 756 69 38ms 5 Aug 2024 First Prev 561–640 of 1,635 Next Last