The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
Morse Encoder in C# 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 1st JayXon 🇺🇸 1,000 139 410ms 7 Aug 2025 2nd Steffan153 🇫🇮 939 148 347ms 24 Feb 2023 2nd sean-niemann 🇺🇸 939 148 347ms 2 Nov 2023 4th Yax42 🇫🇷 874 159 421ms 5 Aug 2025 5th namelessiw 842 165 394ms 29 Jul 2024 6th MeWhenI 🇻🇦 813 171 364ms 8 Dec 2022 7th tomtheisen 🇺🇸 781 178 346ms 20 Dec 2022 8th AdrienHache 🇫🇷 755 184 385ms 8 Jan 2024 9th billings7 🇬🇧 732 190 369ms 21 Nov 2021 9th primo-ppcg 🇹🇭 732 190 358ms 21 Nov 2021 11th stefangimmillaro 716 194 370ms 11 Oct 2023 12th janbehrens 🇩🇪 692 201 348ms 17 Jun 2023 13th tdkkdt 🇷🇺 671 207 381ms 21 Nov 2021 14th roavin 659 211 355ms 23 Jun 2022 15th BREMAUCY 🇫🇷 647 215 351ms 20 Jan 2023 16th scpchicken 🇵🇼 629 221 357ms 6 Apr 2022 17th annaproxy 586 237 360ms 3 May 2022 18th arctouch-cristiannevianna 552 252 386ms 29 Feb 2024 19th hamhub7 523 266 355ms 18 Aug 2022 20th postie77 517 269 373ms 10 May 2023 21st revlayle 🇺🇸 509 273 377ms 23 Jun 2023 22nd iznax 495 281 364ms 21 Nov 2021 23rd amazingalek 463 300 388ms 3 hours ago 24th ericlangedijk 🇸🇮 443 314 367ms 18 Mar 2022 25th mwarvik 🇳🇴 411 338 438ms 6 hours ago 26th kjhughes097 🇬🇧 404 344 370ms 9 Dec 2020 27th arcpolaris 402 346 421ms 11 Nov 2025 28th tomh1012 401 347 400ms 21 Sep 2022 29th jahakari 399 348 353ms 21 Nov 2021 30th ChrisTheisen 382 364 351ms 19 Dec 2022 31st bac0id 378 368 437ms 4 Jul 2024 32nd KatieLG 🇬🇧 356 390 378ms 21 Nov 2021 33rd p-vf 🇨🇭 348 399 373ms 29 Sep 2021 34th DmytroLynda 295 471 427ms 21 Nov 2024 35th brandon-04 285 487 372ms 11 Nov 2025 36th hklemp 🇩🇪 273 509 357ms 21 Nov 2021 37th RandGuy 267 520 356ms 14 Dec 2021 38th MiffOttah 253 549 370ms 21 Nov 2021 39th tbschff 163 853 365ms 16 Apr 2022 40th dokutan 127 1,098 409ms 9 Dec 2024 41st CaedenHarper 🇨🇦 105 1,330 393ms 21 Oct 2025 42nd afgarciam 101 1,381 361ms 21 Nov 2021 43rd KatieLG-Transpiler 🇬🇧 87 1,590 362ms 4 Jul 2022 44th DarioColucci 49 2,844 381ms 21 Nov 2021 1–44 of 44
