The Calendar hole will go live in approximately 2 days. 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 392nd solisolu 855 61 29ms 26 days ago 392nd JOrE20 🇺🇸 855 61 46ms 10 mins ago 403rd stefangimmillaro 855 77 81ms 5 Jun 2023 404th Shanethegamer 🇺🇸 855 85 468ms 22 Nov 2022 404th MeWhenI 🇻🇦 855 85 428ms 22 Jul 2024 404th DialFrost 🇸🇬 855 85 367ms 20 Nov 2025 407th janbehrens 🇩🇪 854 47 7ms 20 Nov 2022 408th GrayJoKing 🇦🇺 854 58 374ms 15 Jan 2024 408th SirBogman 🇺🇸 854 58 446ms 15 Jan 2024 408th AlephSquirrel 854 58 357ms 16 Jan 2024 408th DialFrost 🇸🇬 854 58 447ms 2 Aug 2024 408th emgordon154 854 58 392ms 17 May 2025 413th Natanaelel 🇸🇪 852 45 967ms 22 Jan 2025 414th itsh01 852 58 10ms 21 Nov 2022 414th prplz 🇦🇺 852 58 9ms 25 Nov 2022 414th Larento 852 58 9ms 13 Oct 2023 417th prplz 🇦🇺 852 69 2ms 22 Nov 2022 417th ZakkkkAttackkkk 🇵🇭 852 69 2ms 12 Aug 2023 419th annaproxy 852 81 63ms 11 Dec 2022 420th Steffan153 🇫🇮 850 38 3ms 27 Aug 2024 421st GrayJoKing 🇦🇺 850 65 3ms 9 Oct 2023 422nd jared-hughes 850 90 58ms 16 Mar 2023 423rd 386asm 🇺🇸 849 73 40ms 8 May 2023 424th ovs-code 🇩🇪 849 165 462ms 24 Jan 2025 425th JayXon 🇺🇸 848 65 138ms 22 Nov 2022 426th MeWhenI 🇻🇦 848 112 261ms 22 Jul 2024 427th MeWhenI 🇻🇦 846 78 38ms 14 May 2023 427th inventshah 846 78 3,274ms 12 Nov 2024 429th ovs-code 🇩🇪 846 111 48ms 10 Feb 2023 429th lynn 846 111 41ms 12 Jul 2023 431st revlayle 🇺🇸 843 89 336ms 26 Nov 2022 431st Shanethegamer 🇺🇸 843 89 315ms 20 Mar 2023 433rd Shanethegamer 🇺🇸 843 94 450ms 25 Sep 2025 433rd KasperKivimaeki 🇫🇮 843 94 420ms 1 Dec 2025 435th andersk 🇺🇸 843 102 119ms 20 Nov 2022 435th r-brinke 🇳🇱 843 102 119ms 14 Jun 2023 435th elgan65536 843 102 122ms 10 Nov 2023 435th stefangimmillaro 843 102 123ms 4 Jun 2025 439th UnderKoen 🇳🇱 843 148 42ms 20 Jan 2025 440th SirBogman 🇺🇸 841 43 53ms 22 Nov 2022 440th stefangimmillaro 841 43 37ms 29 Apr 2023 440th nwellnhof 🇩🇪 841 43 37ms 24 Jun 2023 443rd rak1507 🇬🇧 841 62 29ms 22 Nov 2022 443rd fourth-bit 841 62 33ms 7 Dec 2022 443rd SniperSmiley 🇺🇸 841 62 34ms 10 Dec 2022 443rd Fracture17 841 62 33ms 14 Apr 2023 443rd quimey 841 62 33ms 23 Jun 2023 443rd dranjohn 841 62 48ms 11 Sep 2023 443rd RedzGoose 🇦🇺 841 62 13ms 17 Jun 2024 443rd smilesformiles3 841 62 14ms 21 Jun 2025 443rd snoozingnewt 🇨🇦 841 62 44ms 10 Oct 2025 452nd jared-hughes 840 70 2ms 16 Mar 2023 453rd neel11235813 839 59 346ms 15 Jan 2024 453rd inventshah 839 59 413ms 22 Jan 2024 453rd duckyluuk 🇳🇱 839 59 355ms 26 May 2024 453rd CaedenHarper 🇨🇦 839 59 380ms 30 Dec 2024 453rd Babafaba 839 59 375ms 7 Nov 2025 458th Shanethegamer 🇺🇸 839 100 1,331ms 17 Feb 2023 459th GolfingSuccess 🇬🇷 839 167 487ms 23 days ago 460th thisishowmymindworks 🇳🇴 837 59 10ms 2 Jul 2024 460th Yax42 🇫🇷 837 59 10ms 16 Aug 2025 462nd Shanethegamer 🇺🇸 835 88 320ms 24 Nov 2022 462nd Steffan153 🇫🇮 835 88 311ms 24 Nov 2022 464th lynn 835 103 117ms 6 Nov 2025 465th SirBogman 🇺🇸 834 46 860ms 21 Nov 2022 465th GrayJoKing 🇦🇺 834 46 1,029ms 21 Nov 2022 465th MeWhenI 🇻🇦 834 46 967ms 24 Nov 2022 465th pardouin 🇫🇷 834 46 908ms 12 Sep 2025 469th blaztoma 🇱🇹 834 90 394ms 16 Aug 2025 470th DialFrost 🇸🇬 834 168 525ms 6 Mar 2025 470th emgordon154 834 168 499ms 4 Oct 2025 472nd AlephSquirrel 833 24 139ms 28 Apr 2023 473rd GolfingSuccess 🇬🇷 833 52 39ms 13 Aug 2024 474th DialFrost 🇸🇬 833 59 98ms 2 Jul 2025 475th Shanethegamer 🇺🇸 833 79 81ms 22 Nov 2022 476th dvargas46 🇺🇸 831 45 6ms 21 Nov 2022 477th stefangimmillaro 831 78 101ms 15 Sep 2023 478th Kacarott 🇦🇺 830 56 62ms 20 days ago 478th GrayJoKing 🇦🇺 830 56 61ms 19 days ago 480th ovs-code 🇩🇪 829 39 3ms 20 Nov 2022 First Prev 401–480 of 1,632 Next Last