The Calendar hole will go live in approximately 9 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 81st sean-niemann 🇺🇸 901 174 2ms 7 Jun 2023 82nd primo-ppcg 🇹🇭 900 168 13ms 11 Feb 2022 83rd JayXon 🇺🇸 899 177 1,406ms 22 Nov 2021 84th ovs-code 🇩🇪 898 163 93ms 20 Apr 2024 85th btnlq 898 171 13ms 12 Dec 2021 86th GrayJoKing 🇦🇺 898 172 7ms 5 Feb 2025 87th Steffan153 🇫🇮 897 148 347ms 24 Feb 2023 87th sean-niemann 🇺🇸 897 148 347ms 2 Nov 2023 89th sean-niemann 🇺🇸 897 179 2ms 31 Aug 2024 90th 386asm 🇺🇸 896 176 38ms 19 Apr 2023 91st MeWhenI 🇻🇦 896 202 124ms 22 Apr 2023 92nd JayXon 🇺🇸 895 121 3ms 28 Aug 2021 93rd hallvabo 🇳🇴 895 153 9ms 10 Apr 2022 94th acotis 893 196 151ms 22 May 2025 95th pardouin 🇫🇷 892 138 464ms 23 Jun 2024 95th sean-niemann 🇺🇸 892 138 565ms 16 Feb 2025 97th sean-niemann 🇺🇸 891 177 40ms 11 Jun 2023 98th Steffan153 🇫🇮 890 125 50ms 31 Dec 2022 99th edsrzf 🇳🇿 890 178 185ms 35 mins ago 100th Bubbler-4 889 90 3ms 24 Feb 2022 101st JayXon 🇺🇸 888 103 51ms 12 Sep 2021 102nd pardouin 🇫🇷 887 149 4,066ms 17 May 2025 103rd ovs-code 🇩🇪 886 139 543ms 16 Feb 2025 104th Irratix 🇳🇱 886 154 9ms 14 Jan 2023 104th rucin93 🇵🇱 886 154 9ms 5 Mar 2023 104th Argeento 🇵🇱 886 154 9ms 25 Aug 2023 107th btnlq 884 129 275ms 30 Dec 2020 108th JayXon 🇺🇸 884 205 1,875ms 22 Apr 2024 108th kg583 🇺🇸 884 205 40ms 9 days ago 108th edsrzf 🇳🇿 884 205 42ms 6 days ago 111th Steffan153 🇫🇮 883 193 80ms 30 Dec 2022 112th stefangimmillaro 882 210 42ms 26 Apr 2025 113th SirBogman 🇺🇸 880 131 166ms 18 Jan 2023 114th emplv 🇱🇻 880 155 9ms 3 Dec 2020 115th kg583 🇺🇸 880 187 6ms 9 days ago 116th MeWhenI 🇻🇦 879 91 3ms 16 Jan 2022 117th sean-niemann 🇺🇸 878 159 459ms 26 Sep 2023 117th Steffan153 🇫🇮 878 159 496ms 23 Jul 2024 119th lynn 878 213 125ms 11 Oct 2021 120th JayXon 🇺🇸 878 223 26ms 22 Apr 2022 121st kg583 🇺🇸 877 175 4ms 8 days ago 122nd sisyphus-ppcg 🇦🇺 876 127 51ms 17 Jan 2023 123rd Steffan153 🇫🇮 873 218 28ms 23 Sep 2023 124th inventshah 872 157 10ms 24 Jan 2023 124th AlephSquirrel 872 157 9ms 27 Aug 2023 126th sean-niemann 🇺🇸 872 194 314ms 19 Sep 2023 127th vlpx 🇫🇮 869 157 9ms 1 Aug 2024 128th MeWhenI 🇻🇦 869 233 7ms 30 Jun 2023 129th Steffan153 🇫🇮 867 152 136ms 18 Aug 2024 130th kg583 🇺🇸 867 158 9ms 22 May 2025 131st edsrzf 🇳🇿 867 318 2ms 28 Jul 2025 131st emgordon154 867 318 2ms 3 Sep 2025 133rd CLOStrophobic 🇮🇹 866 190 6ms 23 May 2025 134th stefangimmillaro 866 209 98ms 10 Apr 2024 135th canissimia 🇦🇶 866 403 2ms 8 Dec 2023 136th typeswitch-dev 🇵🇹 865 197 13ms 27 Aug 2023 137th MeWhenI 🇻🇦 862 129 35ms 15 Oct 2022 138th ovs-code 🇩🇪 862 139 346ms 10 Mar 2024 139th Kacarott 🇦🇺 862 180 70ms 24 Sep 2024 140th orthoplex 🇨🇽 861 159 12ms 3 Apr 2022 140th lifthrasiir 🇰🇷 861 159 11ms 4 Dec 2024 142nd SirBogman 🇺🇸 861 215 40ms 3 Jun 2025 143rd jared-hughes 860 149 2ms 9 Mar 2024 144th MeWhenI 🇻🇦 858 180 7ms 1 Jan 2025 145th edsrzf 🇳🇿 858 278 3ms 13 Nov 2025 146th Bubbler-4 857 134 35ms 10 Dec 2021 147th antimon2 🇯🇵 856 140 687ms 2 Oct 2021 148th anter69 🇭🇺 856 160 16ms 14 Jan 2023 148th duckyluuk 🇳🇱 856 160 9ms 18 Jul 2024 150th GrayJoKing 🇦🇺 856 199 80ms 1 Jun 2022 151st jared-hughes 855 168 399ms 9 Mar 2024 152nd edsrzf 🇳🇿 854 203 8ms 8 days ago 153rd sean-niemann 🇺🇸 851 155 138ms 30 Apr 2025 154th MeWhenI 🇻🇦 851 161 9ms 7 Dec 2023 154th ryyyn 🇺🇸 851 161 10ms 18 days ago 156th KasperKivimaeki 🇫🇮 850 169 62ms 14 days ago 157th GrayJoKing 🇦🇺 850 179 2ms 3 Dec 2023 158th Steffan153 🇫🇮 850 204 10ms 7 Apr 2024 159th primo-ppcg 🇹🇭 850 369 11ms 20 Jun 2025 160th prplz 🇦🇺 849 131 44ms 3 Nov 2020 First Prev 81–160 of 985 Next Last