The Calendar hole will go live in approximately 7 days. Why not try and solve it ahead of time?
Morse Encoder 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 240th tomtheisen 🇺🇸 766 178 10ms 15 Oct 2020 242nd error256 762 146 36ms 23 May 2025 243rd DialFrost 🇸🇬 761 180 10ms 17 Jul 2024 244th stefangimmillaro 760 174 4,266ms 8 Nov 2024 245th rucin93 🇵🇱 758 174 143ms 31 Oct 2024 246th lynn 758 210 1,389ms 27 Oct 2021 247th andersk 🇺🇸 758 231 143ms 1 Nov 2022 248th stefangimmillaro 757 147 42ms 26 Dec 2024 249th annaproxy 757 181 9ms 22 Feb 2023 249th KatieLG 🇬🇧 757 181 9ms 12 Jan 2025 251st Irratix 🇳🇱 756 190 444ms 3 Aug 2023 252nd GolfingSuccess 🇬🇷 755 163 727ms 2 Mar 2024 253rd emgordon154 754 230 9ms 12 Dec 2024 254th nwellnhof 🇩🇪 751 162 5ms 12 Jul 2022 255th MeWhenI 🇻🇦 750 254 27ms 6 Jun 2023 256th CornerMercury 🇬🇧 748 183 11ms 2 days ago 257th primo-ppcg 🇹🇭 746 153 271ms 16 Dec 2020 258th SirBogman 🇺🇸 746 165 807ms 20 Jan 2024 259th tomtheisen 🇺🇸 746 178 346ms 20 Dec 2022 260th janbehrens 🇩🇪 745 183 10ms 18 May 2023 261st Lv0Sys 🇵🇱 744 184 10ms 24 days ago 262nd edsrzf 🇳🇿 743 179 5ms 13 Feb 2025 262nd targrik 743 179 5ms 13 days ago 264th commandblockguy 🇺🇸 740 185 17ms 30 Apr 2023 265th jared-hughes 739 206 2ms 17 Jul 2022 266th targrik 737 185 9ms 7 Jun 2025 267th abailey2020 🇺🇸 736 186 9ms 18 Aug 2020 267th ydevor 🇮🇱 736 186 10ms 16 Feb 2021 269th MeWhenI 🇻🇦 735 211 79ms 8 Nov 2023 270th PatrickStephansen 🇿🇦 733 186 9ms 15 Apr 2021 271st jared-hughes 732 152 38ms 20 Sep 2022 272nd qpwoeirut 732 187 10ms 20 Oct 2025 273rd MeWhenI 🇻🇦 731 191 438ms 28 Feb 2022 274th NewDefectus 🇮🇱 729 187 9ms 26 Oct 2020 275th Omega65536 🇩🇪 729 188 9ms 10 Aug 2025 275th BREMAUCY 🇫🇷 729 188 9ms 21 Aug 2025 277th emgordon154 728 169 642ms 4 Sep 2025 278th potatoattack 726 233 282ms 22 Apr 2020 279th pyrolitic 🇮🇪 725 189 17ms 6 Apr 2022 279th FlorianCassayre 🇫🇷 725 189 10ms 20 Feb 2023 279th ahmetdemirag 🇨🇾 725 189 10ms 19 Nov 2024 282nd MeWhenI 🇻🇦 724 168 129ms 17 Nov 2022 283rd AdrienHache 🇫🇷 722 184 385ms 8 Jan 2024 283rd emgordon154 722 184 5ms 2 Aug 2025 285th ETHproductions 🇺🇸 722 189 9ms 27 Apr 2018 286th MeWhenI 🇻🇦 722 194 103ms 26 Oct 2022 287th MeWhenI 🇻🇦 722 251 1,800ms 22 Apr 2024 288th NewDefectus 🇮🇱 721 190 10ms 1 Nov 2021 288th janbehrens 🇩🇪 721 190 10ms 17 Jun 2023 290th emgordon154 721 395 568ms 22 May 2025 291st commandblockguy 🇺🇸 720 171 782ms 1 Sep 2025 292nd timvermeulen 720 243 144ms 5 Jan 2020 293rd MeWhenI 🇻🇦 719 218 2ms 12 Nov 2022 294th snoozingnewt 🇨🇦 718 252 108ms 20 Nov 2025 295th angel-p57 🇯🇵 718 486 2ms 7 Dec 2023 296th CedricGebistorf 717 191 9ms 4 Mar 2022 297th MeWhenI 🇻🇦 717 214 4ms 6 Aug 2023 298th emgordon154 716 179 2ms 5 Sep 2025 299th stefangimmillaro 716 220 484ms 6 Oct 2025 300th Informagier 716 261 128ms 27 Sep 2020 301st weliveinhell 🇭🇹 714 191 10ms 24 Sep 2023 302nd MeWhenI 🇻🇦 714 205 92ms 12 Dec 2022 303rd hiddicop 🇸🇪 713 156 43ms 30 Jan 2021 304th FortuiteMan 🇫🇷 713 192 10ms 6 days ago 305th frankgraziano 712 203 19ms 5 Apr 2025 306th stefangimmillaro 711 238 284ms 13 Dec 2024 307th dokutan 710 193 10ms 6 Nov 2024 308th Natanaelel 🇸🇪 708 264 127ms 9 Jun 2023 309th KatieLG 🇬🇧 707 256 88ms 15 Jan 2023 310th SniperSmiley 🇺🇸 706 194 9ms 23 Jun 2021 310th quimey 706 194 10ms 17 Jul 2023 310th davecame 706 194 9ms 22 Nov 2023 310th ndren 706 194 14ms 27 days ago 314th nathanadams 🇳🇿 703 194 10ms 7 Sep 2021 314th Natanaelel 🇸🇪 703 194 10ms 9 Jun 2023 316th mateusz-sterczewski 702 195 10ms 20 Nov 2024 317th MeWhenI 🇻🇦 700 195 10ms 3 Aug 2024 318th didroe 699 159 34ms 20 Nov 2024 319th billings7 🇬🇧 699 190 369ms 21 Nov 2021 319th primo-ppcg 🇹🇭 699 190 358ms 21 Nov 2021 First Prev 241–320 of 985 Next Last