The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Morse Decoder 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 anter69 🇭🇺 719 180 14ms 8 Jan 2023 241st ndren 719 180 9ms 2 Nov 2025 243rd lynn 718 220 1,418ms 29 Oct 2021 244th MeWhenI 🇻🇦 716 240 3ms 28 Jan 2023 245th tayloia 🇬🇧 715 170 9ms 17 May 2023 246th m-tkach 🇺🇦 715 181 10ms 31 Dec 2022 247th jared-hughes 713 185 2ms 30 Aug 2022 248th Artemis21 🇬🇧 711 182 9ms 10 Jan 2025 249th FortuiteMan 🇫🇷 707 183 10ms 6 hours ago 250th MeWhenI 🇻🇦 703 227 104ms 7 Aug 2023 251st emgordon154 703 400 651ms 9 Jun 2025 252nd ovs-code 🇩🇪 699 177 129ms 24 Sep 2023 253rd BREMAUCY 🇫🇷 699 185 9ms 24 Jul 2025 254th Lv0Sys 🇵🇱 695 175 10ms 4 hours ago 255th emgordon154 693 179 134ms 5 Nov 2024 256th blaztoma 🇱🇹 692 163 3ms 22 Oct 2025 257th GrayJoKing 🇦🇺 691 180 91ms 10 Aug 2023 258th janbehrens 🇩🇪 690 175 5ms 9 Jun 2021 259th Irratix 🇳🇱 690 221 3,063ms 11 Jan 2023 260th tdkkdt 🇷🇺 689 216 397ms 21 Nov 2021 261st davitf 688 188 9ms 30 Oct 2018 261st SirBogman 🇺🇸 688 188 14ms 23 Jul 2025 263rd C0de5mith 🇺🇸 687 177 9ms 19 Sep 2022 264th emgordon154 685 185 4ms 7 Jun 2025 265th Irratix 🇳🇱 684 189 15ms 31 Jan 2023 266th adamnielson42 🇺🇸 682 137 3ms 5 Dec 2023 267th Natanaelel 🇸🇪 679 179 9ms 22 Jan 2023 268th angel-p57 🇯🇵 676 387 2ms 6 Dec 2023 269th itsh01 675 180 9ms 12 May 2022 269th dokutan 675 180 9ms 8 Sep 2025 271st MeWhenI 🇻🇦 670 131 50ms 27 Jan 2023 272nd user189032 668 182 10ms 29 May 2019 273rd cbondurant 665 275 210ms 6 May 2021 274th jared-hughes 664 153 39ms 11 Dec 2022 275th tomtheisen 🇺🇸 664 183 10ms 9 Oct 2020 276th ReidZ3 🇺🇸 664 275 124ms 3 Dec 2020 277th MeWhenI 🇻🇦 663 187 128ms 3 Aug 2024 278th TFeld00 🇩🇰 663 195 16ms 14 Mar 2023 279th m-tkach 🇺🇦 663 291 69ms 11 May 2022 280th emplv 🇱🇻 661 164 5ms 3 Oct 2023 281st helbling 🇨🇭 661 184 10ms 14 Sep 2024 282nd potatoattack 661 291 324ms 20 Apr 2020 283rd Natanaelel 🇸🇪 660 169 1,238ms 22 Jan 2023 284th GolfingSuccess 🇬🇷 659 186 910ms 20 Jan 2024 284th SirBogman 🇺🇸 659 186 496ms 23 Jul 2025 286th dokutan 657 162 867ms 8 Sep 2025 287th BambooleanLogic 🇸🇪 657 185 10ms 5 Jul 2023 288th user189032 657 278 127ms 29 May 2019 289th AdrienHache 🇫🇷 655 227 431ms 13 Jan 2025 290th alexkunin 654 186 9ms 6 Jul 2019 291st lynn 654 244 139ms 17 Aug 2021 292nd dzhang314 653 198 9ms 14 Aug 2019 292nd GolfingSuccess 🇬🇷 653 198 9ms 27 Nov 2019 292nd StefanHabel 🇨🇦 653 198 10ms 11 Dec 2022 295th coreynash 650 187 9ms 25 May 2023 296th cbondurant 650 199 15ms 10 May 2021 297th MeWhenI 🇻🇦 649 142 585ms 14 Feb 2023 298th qpwoeirut 647 200 16ms 29 Aug 2025 298th dokutan 647 200 9ms 8 Sep 2025 300th inventshah 644 170 6ms 3 Dec 2022 301st emgordon154 643 189 10ms 7 Aug 2024 302nd dokutan 642 191 503ms 8 Sep 2025 303rd edsrzf 🇳🇿 641 169 4ms 3 Sep 2024 304th ZakkkkAttackkkk 🇵🇭 640 202 9ms 28 Aug 2023 304th kistlerf 🇨🇭 640 202 9ms 19 May 2025 306th MeWhenI 🇻🇦 640 211 9ms 13 Dec 2023 307th stefangimmillaro 638 170 5ms 6 Feb 2023 308th FlorianCassayre 🇫🇷 637 203 16ms 21 Oct 2023 308th ahmetdemirag 🇨🇾 637 203 10ms 18 Nov 2024 308th plcc0 637 203 9ms 4 Oct 2025 308th snoozingnewt 🇨🇦 637 203 9ms 23 days ago 312th Sp3000 🇦🇺 636 147 3ms 10 May 2021 313th ShiraJoseph 🇺🇸 636 191 10ms 28 Apr 2022 314th albanian-laundromat 634 168 904ms 4 Nov 2025 315th Natanaelel 🇸🇪 634 204 15ms 20 Jan 2023 316th unfinishedprogram 633 192 9ms 14 Jul 2023 317th eranws 630 193 9ms 1 Nov 2022 317th moikaturns 🇬🇧 630 193 9ms 10 Nov 2022 319th snoozingnewt 🇨🇦 629 195 906ms 23 days ago 320th janbehrens 🇩🇪 627 180 3ms 6 May 2021 First Prev 241–320 of 873 Next Last
