The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
Rule 110 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 stefangimmillaro 707 109 6ms 13 Oct 2024 402nd DaCoolOne 707 146 6ms 25 Feb 2020 403rd RYNO8 706 82 18ms 30 Aug 2021 403rd cubed-guy 706 82 10ms 12 Feb 2022 403rd FlorianCassayre 🇫🇷 706 82 11ms 17 Oct 2023 403rd Artemis21 🇬🇧 706 82 20ms 10 Jan 2025 403rd wuduculfre 706 82 13ms 22 Jul 2025 408th KatieLG 🇬🇧 704 79 375ms 28 Oct 2024 409th Shanethegamer 🇺🇸 704 151 441ms 25 Sep 2025 410th Shanethegamer 🇺🇸 703 77 49ms 27 Feb 2023 411th Lv0Sys 🇵🇱 703 100 10ms 21 days ago 412th stefangimmillaro 703 128 48ms 26 Apr 2025 413th MeWhenI 🇻🇦 703 236 509ms 10 Feb 2025 414th MeWhenI 🇻🇦 702 127 3,911ms 24 Oct 2024 415th MichalMarsalek 🇨🇿 701 147 297ms 16 Feb 2022 416th annaproxy 698 83 216ms 10 Aug 2022 417th tayloia 🇬🇧 696 101 11ms 17 Jan 2023 418th anter69 🇭🇺 694 78 40ms 25 Jan 2023 419th jared-hughes 694 104 1,459ms 21 Jul 2022 420th prestosilver 🇺🇸 694 111 6ms 19 Nov 2025 421st saito-ta 🇯🇵 691 71 57ms 1 Oct 2022 422nd daniel-pedersen 🇸🇪 690 102 10ms 7 Mar 2022 423rd jacklynnepenick 689 84 201ms 26 Aug 2021 423rd NewDefectus 🇮🇱 689 84 11ms 18 Nov 2021 423rd plcc0 689 84 24ms 25 Apr 2025 426th jared-hughes 689 138 473ms 21 Jul 2022 427th MeWhenI 🇻🇦 688 91 217ms 28 Jan 2023 428th dokutan 688 150 4ms 9 Jul 2024 429th duckyluuk 🇳🇱 687 81 383ms 29 Aug 2024 429th snoozingnewt 🇨🇦 687 81 340ms 7 Nov 2025 431st primo-ppcg 🇹🇭 687 115 329ms 21 Nov 2021 432nd scpchicken 🇵🇼 685 54 4ms 19 Jan 2023 433rd targrik 684 105 18ms 18 days ago 434th arjanadriaanse 🇳🇱 684 115 151ms 15 Nov 2021 435th Shanethegamer 🇺🇸 684 185 277ms 27 Feb 2023 436th DialFrost 🇸🇬 683 243 434ms 7 Feb 2025 437th Dominoscompute 682 58 34ms 2 Jun 2022 438th retrohun 681 85 24ms 18 Jul 2018 438th Shanethegamer 🇺🇸 681 85 19ms 21 Aug 2021 438th Natanaelel 🇸🇪 681 85 10ms 6 Aug 2023 441st arjanadriaanse 🇳🇱 681 115 195ms 28 Sep 2023 442nd jared-hughes 676 114 6ms 21 Jul 2022 443rd MeWhenI 🇻🇦 676 146 6ms 23 May 2023 444th inventshah 676 180 26ms 24 Oct 2023 445th Shanethegamer 🇺🇸 675 246 475ms 29 Jan 2025 446th retrohun 674 107 2,809ms 29 Jun 2021 447th lynn 673 55 10ms 10 Jan 2022 448th JDiLenarda 🇫🇷 673 149 1,297ms 11 Nov 2023 449th primo-ppcg 🇹🇭 672 85 994ms 23 Mar 2021 450th Natanaelel 🇸🇪 671 59 34ms 23 Oct 2023 451st pardouin 🇫🇷 671 133 4,026ms 13 Nov 2024 452nd SirBogman 🇺🇸 670 83 549ms 20 Jan 2024 453rd janbehrens 🇩🇪 670 105 15ms 15 Nov 2022 453rd voytxt 🇨🇿 670 105 10ms 14 Jan 2024 455th Shanethegamer 🇺🇸 670 149 121ms 30 May 2021 456th olleicua 🇺🇸 669 81 46ms 12 Feb 2024 457th inventshah 669 159 377ms 22 Oct 2023 458th janbehrens 🇩🇪 669 193 26ms 9 Jul 2021 459th dokutan 667 142 10ms 22 Jun 2024 460th schachmattmatt 666 87 17ms 12 Aug 2021 460th MeWhenI 🇻🇦 666 87 25ms 22 Oct 2021 460th jared-hughes 666 87 15ms 17 Feb 2022 460th Command-Master 666 87 13ms 29 Sep 2023 464th Natanaelel 🇸🇪 666 118 182ms 6 Jul 2025 465th CLOStrophobic 🇮🇹 666 153 31ms 1 Mar 2025 466th alexkunin 666 155 7ms 20 Jul 2019 467th GolfingSuccess 🇬🇷 663 74 56ms 31 May 2022 468th Shanethegamer 🇺🇸 662 143 47ms 12 Apr 2024 468th emgordon154 662 143 16ms 15 Dec 2024 470th RyanMHsiao 662 207 1,715ms 24 Sep 2024 471st MeWhenI 🇻🇦 661 56 6ms 19 Jan 2022 472nd emgordon154 661 135 4,838ms 10 Sep 2025 473rd bac0id 661 144 555ms 28 Jun 2024 474th Shanethegamer 🇺🇸 661 184 25ms 27 Feb 2023 475th emgordon154 661 251 608ms 4 Aug 2025 476th jared-hughes 660 60 34ms 27 Oct 2021 477th Haksell 🇦🇶 660 82 41ms 22 Feb 2023 478th TobyBoyne 🇬🇧 658 88 15ms 7 Apr 2022 479th ScottHamper 658 120 328ms 25 Feb 2022 480th cywong-amino 🇭🇰 657 107 13ms 25 Jun 2020 First Prev 401–480 of 1,614 Next Last