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 641st ian-h-chamberlain 🇺🇸 385 455 219ms 4 Aug 2022 642nd arcpolaris 384 346 452ms 11 Nov 2025 643rd juliansiebert 🇩🇪 383 298 325ms 15 Jun 2025 644th tomh1012 383 347 400ms 21 Sep 2022 645th jfallon1997 383 358 10ms 13 May 2024 646th LucaArgentiUCF 🇮🇹 383 484 46ms 25 Jan 2021 647th jahakari 382 348 353ms 21 Nov 2021 648th betaveros 382 359 9ms 1 Jan 2023 649th LSWdigital 381 403 13ms 15 Dec 2021 650th jerrandolph 381 444 322ms 3 Nov 2023 651st Yewzir 🇧🇪 381 475 1,899ms 7 May 2024 652nd dzshn 380 360 10ms 25 Nov 2020 652nd stordev 380 360 9ms 26 Feb 2021 652nd richard-oelze 🇩🇪 380 360 10ms 20 Mar 2021 652nd 77Tigers 380 360 10ms 28 May 2021 656th Blendi-Goose 380 401 2ms 5 Oct 2025 657th tobeannouncd 379 493 128ms 29 Apr 2024 658th biinari 378 294 45ms 25 Mar 2018 659th pandapawskat 378 339 2ms 22 Sep 2021 660th labster 378 352 5ms 10 Mar 2018 661st yzhs 🇩🇪 377 295 44ms 20 Jul 2022 662nd dokutan 376 296 35ms 21 Apr 2025 663rd acollett89 376 363 10ms 5 Aug 2025 664th 0xjac 🇨🇭 376 450 281ms 9 Jun 2025 665th dijs 375 364 10ms 20 Dec 2019 665th madeforlosers 375 364 10ms 30 Nov 2023 667th marcin7Cd 375 439 5ms 5 Apr 2021 668th eiburns 373 367 10ms 8 May 2023 669th SpareManiKatti 372 367 9ms 14 Oct 2021 670th temoto 371 369 10ms 20 Sep 2018 671st CaedenHarper 🇨🇦 370 370 10ms 10 Oct 2024 672nd BuBuaBu 369 412 1ms 30 Aug 2023 673rd modellking 368 362 4ms 22 Mar 2018 674th brochmann 🇸🇪 368 372 9ms 9 Feb 2022 674th ridingqwerty 🇺🇸 368 372 10ms 3 Dec 2023 676th scpchicken 🇵🇼 368 417 5ms 19 Apr 2023 676th dokutan 368 417 4ms 2 Apr 2024 678th PotatoSaladOverlord 367 373 10ms 16 Jan 2024 679th TheZwierzLF 🇵🇱 366 336 608ms 13 days ago 680th pickerj 366 374 10ms 5 Jun 2024 681st CheeseCake628 🇳🇴 365 337 539ms 18 Oct 2025 682nd ChrisTheisen 365 364 351ms 19 Dec 2022 683rd ragerin 365 375 16ms 21 Feb 2018 684th croc54 364 376 10ms 14 Jan 2025 685th msbranicky 363 466 309ms 31 Aug 2023 686th m42km 362 378 10ms 23 Oct 2023 686th klixel 🇨🇦 362 378 9ms 23 Jan 2025 688th Jacob385 361 341 1,658ms 1 May 2024 689th bac0id 361 368 437ms 4 Jul 2024 690th unfinishedprogram 361 378 10ms 28 Nov 2023 691st pandapawskat 360 308 2ms 27 Aug 2021 692nd krencl 360 370 4ms 28 Apr 2020 693rd 4ndyJ 🇬🇧 360 380 10ms 19 Jun 2025 694th Waffle3z 359 310 47ms 22 Jan 2021 695th mokymok 🇺🇸 359 382 10ms 1 Dec 2021 696th ian-odonnell 357 382 9ms 14 Mar 2018 697th dsntzn 🇸🇰 356 383 9ms 2 Mar 2021 698th msbranicky 355 372 4,936ms 11 Jan 2025 699th wrhm 354 387 10ms 12 Dec 2020 700th KevinMarquette 🇺🇸 353 323 258ms 23 Apr 2022 701st jackkav 353 386 10ms 14 Apr 2018 702nd michelebastione 🇮🇹 351 390 10ms 21 Mar 2022 703rd CaedenHarper 🇨🇦 349 353 1,595ms 19 Jan 2025 704th TimCurwick 🇺🇸 348 328 242ms 29 Jul 2020 705th jhpaques 🇫🇷 348 394 10ms 29 Jul 2022 706th dokutan 345 910 11ms 24 Dec 2024 707th Openstreetmapler 344 398 10ms 23 Nov 2019 708th titpetric 344 492 289ms 20 Apr 2020 709th SteveL-MSFT 343 333 255ms 10 Jun 2020 710th madex 🇩🇪 342 401 9ms 23 Jun 2024 711th msbranicky 342 409 2ms 14 Oct 2023 712th KatieLG 🇬🇧 340 390 378ms 21 Nov 2021 713th Pena86 340 403 12ms 30 Dec 2021 713th ThatAlo 340 403 10ms 12 Jun 2023 715th Mikey-Beep 🇬🇧 339 404 10ms 25 Aug 2023 716th shaunjc 338 403 9ms 10 Jun 2021 717th jotslo 🇬🇧 337 407 9ms 5 Jul 2021 718th rambox11 336 406 9ms 6 Dec 2019 719th bsoyka 🇺🇸 336 408 10ms 9 Jan 2022 720th The-Wolfson 336 539 102ms 1 Nov 2024 First Prev 641–720 of 984 Next Last
