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 401st andersk 🇺🇸 843 102 119ms 20 Nov 2022 401st r-brinke 🇳🇱 843 102 119ms 14 Jun 2023 401st elgan65536 843 102 122ms 10 Nov 2023 401st stefangimmillaro 843 102 123ms 4 Jun 2025 405th UnderKoen 🇳🇱 843 148 42ms 20 Jan 2025 406th GrayJoKing 🇦🇺 841 32 766ms 20 Feb 2023 406th Steffan153 🇫🇮 841 32 136ms 26 Aug 2024 408th SirBogman 🇺🇸 841 43 46ms 22 Nov 2022 408th stefangimmillaro 841 43 36ms 29 Apr 2023 408th nwellnhof 🇩🇪 841 43 38ms 24 Jun 2023 411th prplz 🇦🇺 839 69 2ms 22 Nov 2022 412th Shanethegamer 🇺🇸 839 100 1,331ms 17 Feb 2023 413th GolfingSuccess 🇬🇷 839 167 487ms 12 days ago 414th thisishowmymindworks 🇳🇴 837 59 10ms 2 Jul 2024 414th Yax42 🇫🇷 837 59 10ms 16 Aug 2025 416th bizy-coder 836 56 382ms 1 Sep 2024 416th Shanethegamer 🇺🇸 836 56 359ms 28 Oct 2024 416th albanian-laundromat 836 56 389ms 4 Aug 2025 416th snoozingnewt 🇨🇦 836 56 401ms 10 Oct 2025 420th andersk 🇺🇸 836 59 34ms 20 Nov 2022 420th bricknellj 836 59 29ms 1 Dec 2022 420th NerdyMcNerd42 836 59 14ms 22 Jan 2023 420th gabrielsqw 836 59 11ms 17 Apr 2023 420th RYNO8 836 59 10ms 4 Sep 2023 420th inventshah 836 59 11ms 22 Jan 2024 420th SB-945 836 59 16ms 19 Feb 2024 420th davecame 836 59 31ms 14 Mar 2024 420th Bulmenisaurus 836 59 30ms 22 Oct 2024 420th snydej 836 59 10ms 21 Nov 2024 420th ryyyn 🇺🇸 836 59 30ms 19 Jan 2025 420th elana-teal 836 59 10ms 20 Jun 2025 420th dirckvdende 836 59 10ms 11 Jul 2025 420th edsrzf 🇳🇿 836 59 30ms 27 Aug 2025 420th Lv0Sys 🇵🇱 836 59 32ms 10 days ago 435th lynn 835 103 117ms 6 Nov 2025 436th SirBogman 🇺🇸 834 46 860ms 21 Nov 2022 436th GrayJoKing 🇦🇺 834 46 1,029ms 21 Nov 2022 436th MeWhenI 🇻🇦 834 46 967ms 24 Nov 2022 436th pardouin 🇫🇷 834 46 908ms 12 Sep 2025 440th blaztoma 🇱🇹 834 90 394ms 16 Aug 2025 441st DialFrost 🇸🇬 834 168 540ms 6 Mar 2025 441st emgordon154 834 168 499ms 4 Oct 2025 443rd AlephSquirrel 833 24 136ms 28 Apr 2023 444th GolfingSuccess 🇬🇷 833 52 39ms 13 Aug 2024 445th DialFrost 🇸🇬 833 59 98ms 2 Jul 2025 446th Shanethegamer 🇺🇸 833 79 81ms 22 Nov 2022 447th dvargas46 🇺🇸 831 45 7ms 21 Nov 2022 448th stefangimmillaro 831 78 101ms 15 Sep 2023 449th Kacarott 🇦🇺 830 56 62ms 9 days ago 449th GrayJoKing 🇦🇺 830 56 61ms 8 days ago 451st ovs-code 🇩🇪 829 39 3ms 20 Nov 2022 451st GrayJoKing 🇦🇺 829 39 3ms 21 Nov 2022 451st nwellnhof 🇩🇪 829 39 3ms 15 Jul 2023 454th jared-hughes 827 70 2ms 16 Mar 2023 455th edsrzf 🇳🇿 826 90 56ms 10 Feb 2025 455th kg583 🇺🇸 826 90 56ms 27 Aug 2025 457th antimon2 🇯🇵 825 59 2,299ms 20 Nov 2022 458th ovs-code 🇩🇪 825 67 3ms 9 Oct 2023 459th Emutis 🇱🇹 825 91 396ms 16 Aug 2025 460th coreynash 823 60 10ms 19 Oct 2023 460th helbling 🇨🇭 823 60 10ms 13 Mar 2024 462nd emplv 🇱🇻 823 105 25ms 21 Nov 2022 463rd m-tkach 🇺🇦 822 57 365ms 21 Jan 2024 463rd MeWhenI 🇻🇦 822 57 415ms 22 Jul 2024 465th OllieBoyne 🇬🇧 822 60 32ms 6 Dec 2022 465th AlexanderFair 822 60 32ms 2 Jul 2023 465th bzijlema 🇳🇱 822 60 33ms 11 Nov 2023 465th ahmetdemirag 🇨🇾 822 60 29ms 21 Jul 2024 465th dokutan 822 60 39ms 21 Aug 2024 465th BlankSpruce 822 60 11ms 26 Apr 2025 465th jipsong 🇩🇪 822 60 30ms 13 Jun 2025 465th webmiche 822 60 11ms 20 days ago 473rd sisyphus-ppcg 🇦🇺 821 44 41ms 22 Nov 2022 474th Shanethegamer 🇺🇸 821 79 98ms 22 Nov 2022 475th GrayJoKing 🇦🇺 820 49 5ms 21 Nov 2022 475th DialFrost 🇸🇬 820 49 6ms 24 May 2025 477th DialFrost 🇸🇬 820 79 175ms 8 Aug 2024 477th Natanaelel 🇸🇪 820 79 168ms 31 May 2025 479th MeWhenI 🇻🇦 820 168 1,682ms 7 Nov 2025 480th Shanethegamer 🇺🇸 819 105 118ms 22 Nov 2022 First Prev 401–480 of 1,612 Next Last