The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
DFA Simulator 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 241st edsrzf 🇳🇿 779 222 12ms 29 Jun 2025 242nd anter69 🇭🇺 778 119 65ms 28 Mar 2024 243rd duckyluuk 🇳🇱 778 147 9ms 6 Nov 2024 244th Shanethegamer 🇺🇸 778 193 2ms 7 Nov 2023 244th Alex-x90 🇺🇸 778 193 2ms 24 Nov 2023 246th Shanethegamer 🇺🇸 778 245 110ms 5 Apr 2025 247th edsrzf 🇳🇿 776 271 33ms 27 May 2025 248th albanian-laundromat 775 223 3ms 24 Jul 2025 249th MeWhenI 🇻🇦 773 75 57ms 26 Jul 2025 250th snoozingnewt 🇨🇦 773 220 554ms 18 Oct 2025 251st Salutations45 772 148 9ms 16 Dec 2024 252nd Shanethegamer 🇺🇸 771 120 57ms 1 Nov 2023 253rd Shanethegamer 🇺🇸 771 213 154ms 28 Nov 2023 254th GolfingSuccess 🇬🇷 770 195 2ms 1 Nov 2023 255th andrewjc2000 769 183 11ms 1 Mar 2025 256th MeWhenI 🇻🇦 769 192 11ms 7 Dec 2023 257th Command-Master 769 221 2,876ms 2 Nov 2023 257th MeWhenI 🇻🇦 769 221 565ms 13 Jul 2024 259th SirBogman 🇺🇸 764 122 226ms 4 Nov 2023 260th MeWhenI 🇻🇦 763 249 461ms 7 Nov 2025 261st MichalMarsalek 🇨🇿 762 150 9ms 1 Nov 2023 261st uttumuttu 🇫🇮 762 150 10ms 3 Nov 2023 263rd pardouin 🇫🇷 759 179 4,054ms 19 Jul 2025 264th MeWhenI 🇻🇦 759 192 369ms 20 Jun 2024 265th Shanethegamer 🇺🇸 757 143 1,024ms 1 Nov 2023 266th coreynash 757 151 10ms 10 Jul 2024 266th sean-niemann 🇺🇸 757 151 10ms 21 Mar 2025 268th commandblockguy 🇺🇸 756 186 12ms 6 Nov 2023 269th Shanethegamer 🇺🇸 756 190 337ms 14 Nov 2023 269th namelessiw 756 190 385ms 31 May 2025 271st edsrzf 🇳🇿 756 208 119ms 29 Jun 2025 272nd stefangimmillaro 756 274 278ms 4 Nov 2023 273rd CatsAreFluffy 755 105 50ms 26 Nov 2023 274th SirBogman 🇺🇸 752 141 499ms 2 Nov 2023 275th Emutis 🇱🇹 752 187 13ms 12 Oct 2025 276th Alex-x90 🇺🇸 752 226 2,902ms 2 Nov 2023 277th emgordon154 750 279 252ms 7 Mar 2025 278th sean-niemann 🇺🇸 749 206 3ms 19 Nov 2025 279th Protothor 747 153 9ms 10 Jun 2025 280th GolfingSuccess 🇬🇷 745 228 100ms 1 Nov 2023 281st CornerMercury 🇬🇧 744 189 16ms 19 Nov 2025 282nd lifthrasiir 🇰🇷 740 86 3ms 6 Dec 2024 283rd snoozingnewt 🇨🇦 738 239 115ms 20 Nov 2025 284th lelbal 736 191 11ms 12 Nov 2025 285th MeWhenI 🇻🇦 734 282 256ms 25 Nov 2023 286th adamnielson42 🇺🇸 733 192 11ms 1 Nov 2023 287th elgan65536 729 193 12ms 11 Apr 2024 288th tailorspy 729 233 88ms 14 Aug 2024 289th albanian-laundromat 724 267 44ms 11 Nov 2025 290th olleicua 🇺🇸 723 128 46ms 19 Jan 2024 291st MeWhenI 🇻🇦 722 199 342ms 20 Jun 2024 291st snoozingnewt 🇨🇦 722 199 372ms 18 Oct 2025 293rd commandblockguy 🇺🇸 720 175 614ms 1 Sep 2025 294th billings7 🇬🇧 719 200 387ms 11 Nov 2023 295th prplz 🇦🇺 719 209 2ms 2 Nov 2023 296th MeWhenI 🇻🇦 718 172 47ms 18 Aug 2024 297th Ripick 718 203 328ms 15 Aug 2024 298th HumanoidCPU 714 197 11ms 13 Sep 2024 298th klixel 🇨🇦 714 197 11ms 19 Jul 2025 298th vhoulbreque 🇫🇷 714 197 11ms 21 days ago 301st KatieLG 🇬🇧 710 198 11ms 12 Jan 2025 301st Bmrl7 710 198 11ms 24 days ago 303rd sean-niemann 🇺🇸 709 167 135ms 19 May 2025 304th emgordon154 707 131 54ms 23 Nov 2024 305th stefangimmillaro 706 162 10ms 5 Nov 2023 306th btjones0 703 200 14ms 7 Nov 2023 307th annaproxy 703 244 22ms 1 Nov 2023 308th helbling 🇨🇭 701 163 10ms 23 Sep 2024 309th h3ra993huskp 🇯🇵 698 272 448ms 18 days ago 310th snoozingnewt 🇨🇦 697 174 363ms 21 days ago 311th SB-945 696 202 11ms 28 Jan 2024 311th Artemis21 🇬🇧 696 202 36ms 24 Dec 2024 313th dylanarmstrong 693 165 10ms 22 Jan 2024 314th AlephSquirrel 693 268 13ms 21 Oct 2024 315th HumanoidCPU 692 182 573ms 13 Sep 2024 316th StefanHabel 🇨🇦 689 204 10ms 11 Feb 2024 317th Shanethegamer 🇺🇸 689 218 4ms 2 Nov 2023 318th MeWhenI 🇻🇦 689 232 15ms 12 Apr 2024 319th MeWhenI 🇻🇦 685 293 43ms 13 Feb 2025 320th MeWhenI 🇻🇦 684 167 10ms 1 Nov 2023 First Prev 241–320 of 503 Next Last