The Calendar hole will go live in approximately 13 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 561st KatieLG 🇬🇧 355 345 722ms 27 Jul 2025 562nd msbranicky 354 543 315ms 31 Aug 2023 563rd wuminws 352 322 4,081ms 20 Feb 2025 564th qwjhvbxi 352 368 9ms 12 Feb 2024 565th McErer 351 346 9ms 14 Jan 2019 566th TheZwierzLF 🇵🇱 351 369 11ms 10 days ago 567th KatieLG 🇬🇧 351 424 395ms 24 Oct 2022 568th Babafaba 350 370 10ms 25 days ago 569th omurakazuaki 🇯🇵 347 350 9ms 17 Feb 2021 570th williamlake 346 527 131ms 17 Sep 2021 571st LordSir101 345 352 9ms 16 Aug 2025 572nd Laksen 🇩🇰 343 562 27ms 8 Jul 2021 573rd KatieLG 🇬🇧 342 355 9ms 4 Feb 2022 573rd mrxz 🇳🇱 342 355 10ms 23 Jun 2024 575th Babafaba 342 359 1,298ms 24 days ago 576th RaBa21 🇭🇺 342 378 16ms 18 Jul 2025 577th febiw 341 379 9ms 22 Mar 2020 578th lukasmoellerch 340 357 10ms 15 Jul 2019 579th meenie 339 300 48ms 21 Jan 2023 580th aaronze 🇦🇺 339 359 9ms 1 Apr 2021 581st wrhm 339 382 10ms 15 Dec 2020 582nd postie77 339 439 362ms 2 May 2023 583rd madeforlosers 338 360 11ms 23 Oct 2024 584th 71c 338 383 10ms 29 Apr 2018 585th SB-945 337 384 9ms 10 Mar 2024 586th msbranicky 336 492 2ms 14 Oct 2023 587th SteveL-MSFT 335 341 288ms 10 Jun 2020 588th KatieLG 🇬🇧 334 334 1,054ms 25 Apr 2021 589th madex 🇩🇪 333 388 9ms 12 May 2024 590th arcage 🇯🇵 332 336 1,134ms 10 Aug 2021 591st bbakersmith 332 369 14ms 31 Jul 2021 592nd msbranicky 330 392 12ms 3 Jul 2023 593rd marcin7Cd 330 420 44ms 11 Mar 2021 594th biinari 329 309 36ms 25 Mar 2018 595th pg98 329 369 9ms 5 Sep 2019 596th neihousaigaai 328 428 658ms 18 Apr 2021 597th msbranicky 327 573 3ms 13 Aug 2023 598th galloj 🇨🇿 324 338 3ms 17 Jan 2023 599th n1LS 323 314 37ms 2 Oct 2019 600th dijs 322 378 10ms 20 Dec 2019 600th SpareManiKatti 322 378 9ms 14 Oct 2021 602nd Anonymousellama21 320 342 2ms 16 May 2022 603rd GWStuart 318 407 9ms 27 Jan 2023 604th MeWhenI 🇻🇦 317 416 2ms 25 Aug 2023 605th dsntzn 🇸🇰 316 385 10ms 3 Mar 2021 606th alemelis 315 293 976ms 6 Aug 2024 607th codewrite 🇬🇧 315 411 10ms 12 Jul 2025 608th michelebastione 🇮🇹 314 412 12ms 21 Mar 2022 609th msbranicky 313 392 761ms 17 Jan 2024 610th alexhuntley 312 444 5ms 11 Apr 2021 611th brochmann 🇸🇪 311 416 9ms 9 Feb 2022 611th ThatAlo 311 416 10ms 12 Jun 2023 613th stordev 309 418 11ms 26 Feb 2021 614th Florian-Mt 309 419 10ms 28 Nov 2023 615th LucaArgentiUCF 🇮🇹 308 590 42ms 23 Jan 2021 616th Waffle3z 307 331 43ms 22 Jan 2021 617th acollett89 307 396 9ms 5 Aug 2025 618th MaxElf999 306 423 10ms 24 May 2022 619th Stockoh 🇫🇷 304 426 9ms 17 Oct 2024 620th rambox11 303 401 9ms 6 Dec 2019 621st Agazoth 302 378 252ms 12 Jun 2020 622nd markbyrne 302 429 10ms 26 Oct 2020 622nd haydenridd 302 429 10ms 26 Oct 2020 624th mintypython 300 405 9ms 19 Oct 2018 625th Yewzir 🇧🇪 299 442 10ms 26 Dec 2024 626th ereztaiar 🇮🇱 296 410 11ms 11 Sep 2021 627th zakariamouhid 296 411 10ms 2 Aug 2023 628th ethandhunt 295 439 10ms 21 Jul 2021 629th TheEric0802 🇩🇪 295 583 3ms 22 Sep 2023 630th dokutan 294 510 4ms 9 Dec 2024 631st rollershutter 293 442 10ms 25 May 2024 632nd adoxography 292 348 37ms 1 Jun 2018 633rd JoeBigToe 292 392 249ms 5 Jun 2020 634th joonaspu 292 443 9ms 14 Jun 2023 635th MeWhenI 🇻🇦 291 1,326 38ms 28 Aug 2023 636th madex 🇩🇪 290 350 35ms 13 May 2024 637th sergeyz7 🇬🇧 290 394 268ms 15 Nov 2020 638th martinnorling 🇸🇪 290 446 10ms 20 Jun 2022 638th CutSandstone 290 446 9ms 5 Jul 2024 640th olligobber 🇦🇺 289 631 162ms 22 May 2020 First Prev 561–640 of 873 Next Last
