The Calendar hole will go live in approximately 13 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 801st squadb3 463 152 13ms 10 Oct 2019 801st Quadruplay 463 152 10ms 12 Jul 2025 803rd roguh 🇬🇹 463 170 154ms 18 Jan 2024 804th Attero 🇸🇪 462 171 345ms 21 Nov 2021 805th Yewzir 🇧🇪 462 297 2,689ms 14 Nov 2025 806th pandapawskat 461 167 6ms 1 Sep 2021 807th bastienvoirin 🇫🇷 460 126 18ms 28 Nov 2020 807th lemogne 460 126 19ms 10 Aug 2021 807th ThijsLuttikhuis 460 126 21ms 3 Mar 2024 807th Mabeloid 🇳🇴 460 126 15ms 22 Sep 2024 807th robin-scragg 460 126 26ms 10 Oct 2025 812th RussellEmerine 460 171 139ms 10 Apr 2020 813th citsur 456 169 6ms 17 Jun 2019 814th boxjelly 455 278 309ms 10 Feb 2021 815th MeWhenI 🇻🇦 455 284 62ms 25 Jun 2022 816th KatieLG 🇬🇧 454 126 1,273ms 20 Oct 2021 817th CatsAreFluffy 454 155 11ms 20 Feb 2023 817th Protothor 454 155 10ms 8 Jul 2025 819th rambox11 453 170 6ms 16 Mar 2019 820th msrawson 452 128 12ms 28 Aug 2018 820th madeforlosers 452 128 18ms 30 Nov 2023 822nd mintypython 451 156 10ms 21 Sep 2019 822nd unfinishedprogram 451 156 10ms 27 Oct 2023 824th dloscutoff 450 129 413ms 27 Nov 2018 825th jfallon1997 449 129 12ms 6 Sep 2022 825th DrPiranoid 449 129 10ms 12 Oct 2022 825th BREMAUCY 🇫🇷 449 129 14ms 4 Jan 2024 828th yokasuretsu 448 121 44ms 11 Jul 2018 828th TheZwierzLF 🇵🇱 448 121 80ms 3 hours ago 830th ibexq 448 172 6ms 6 Mar 2023 831st Dazza314 🇬🇧 445 130 11ms 31 Oct 2020 831st xkacer 🇨🇿 445 130 11ms 31 Jan 2021 831st nstearns96 🇬🇧 445 130 342ms 10 Jan 2023 834th edsrzf 🇳🇿 444 162 5ms 6 Oct 2024 835th JGDoerrer 444 217 161ms 18 Jan 2022 836th msbranicky 443 179 114ms 17 Aug 2023 837th Mabeloid 🇳🇴 442 126 515ms 22 Sep 2024 838th OllieBoyne 🇬🇧 442 131 12ms 2 Jan 2021 839th Alex-x90 🇺🇸 441 241 417ms 17 Mar 2024 840th JRaspass 🇬🇧 440 96 3ms 20 Dec 2022 841st msbranicky 440 231 3ms 3 Oct 2024 842nd andre-lameirinhas 🇵🇹 439 132 18ms 3 Oct 2020 842nd fynnkroeger 439 132 13ms 4 Jan 2023 844th h3ra993huskp 🇯🇵 438 243 502ms 18 days ago 845th eranws 437 161 10ms 28 Sep 2022 846th msbranicky 436 229 99ms 1 Jan 2024 847th garrisonhh 435 133 19ms 21 Nov 2020 848th Natanaelel 🇸🇪 433 178 6ms 14 May 2023 849th ludwig-n 432 134 11ms 6 Apr 2021 849th forthuser 432 134 19ms 24 Jul 2023 849th mbittner20 432 134 11ms 19 Aug 2023 852nd Yewzir 🇧🇪 432 219 72ms 5 Apr 2024 853rd roguh 🇬🇹 431 179 6ms 8 Jan 2024 854th dokutan 430 232 104ms 22 Dec 2024 855th geofft 429 135 30ms 11 Dec 2020 855th Y0UR-U5ERNAME 429 135 13ms 4 Jul 2022 857th two-bad 🇬🇧 429 164 10ms 25 Feb 2024 858th cafehaine 🇫🇷 429 237 3ms 5 Feb 2020 859th rucin93 🇵🇱 429 248 416ms 28 Nov 2023 860th lacroixjonathan87 428 168 5ms 6 Sep 2020 861st hamhub7 427 185 362ms 17 Aug 2022 862nd amishtal 426 136 18ms 30 Nov 2019 863rd zakariamouhid 426 165 23ms 14 Jun 2023 864th aDwarfNamedUrist 425 239 3ms 6 Dec 2022 865th AnnoyedArt1256 424 166 10ms 9 Jan 2022 865th madeforlosers 424 166 10ms 3 Nov 2025 867th feherd 423 137 11ms 29 Aug 2021 867th TheZwierzLF 🇵🇱 423 137 13ms 4 days ago 869th decorator-factory 420 138 11ms 23 May 2019 869th aalec 420 138 11ms 4 May 2024 869th msbranicky 420 138 17ms 3 Oct 2024 872nd MeWhenI 🇻🇦 420 211 507ms 10 Feb 2025 873rd Jviscus1 417 139 40ms 24 Apr 2020 873rd Psirving 417 139 12ms 1 Aug 2020 875th dijs 416 169 10ms 21 Dec 2019 876th MossGrass 🇺🇸 415 256 410ms 16 Oct 2020 877th RandGuy 413 191 335ms 31 Mar 2022 878th msbranicky 413 216 3,862ms 9 Jan 2025 879th PaulMWeiser 411 141 437ms 4 Mar 2023 879th rsgray 411 141 11ms 24 Jan 2024 First Prev 801–880 of 1,615 Next Last
