The Calendar hole will go live in approximately 13 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 481st raphaelimahorn 517 264 9ms 18 Aug 2021 482nd ImpressedByRocks 517 265 14ms 19 Sep 2022 483rd elgan65536 516 339 252ms 10 Nov 2023 484th didion0 🇺🇸 515 265 9ms 2 Feb 2021 485th labster 514 224 210ms 10 Mar 2018 486th tatzyr 🇯🇵 513 217 39ms 14 Mar 2025 487th InigoK 🇺🇸 507 270 10ms 15 Jun 2023 487th msbranicky 507 270 17ms 5 Jul 2023 487th fgrosshans 🇫🇷 507 270 11ms 9 Jul 2024 490th mtirado1 507 300 2ms 7 May 2023 491st MichalMarsalek 🇨🇿 506 317 385ms 4 Sep 2022 492nd EnviloN 🇨🇿 505 271 9ms 20 Oct 2024 493rd Babafaba 504 244 688ms 11 Nov 2025 494th hamhub7 499 266 355ms 18 Aug 2022 495th guliyevemil1 🇦🇿 498 340 310ms 18 Apr 2020 496th bricknellj 498 701 2ms 3 May 2024 497th snoozingnewt 🇨🇦 497 323 2ms 9 Nov 2025 498th janAkali 🇷🇺 496 323 331ms 10 Sep 2024 499th postie77 494 269 373ms 10 May 2023 500th MeWhenI 🇻🇦 493 247 3ms 25 May 2022 501st villfa 493 270 4ms 21 May 2019 502nd moikaturns 🇬🇧 491 278 9ms 10 Nov 2022 503rd nullie 489 280 10ms 9 Jun 2022 504th yokasuretsu 487 281 10ms 19 Apr 2018 505th revlayle 🇺🇸 486 273 377ms 23 Jun 2023 506th petar-donchev 486 282 10ms 7 Sep 2019 506th geofft 486 282 10ms 14 Dec 2020 508th Mabeloid 🇳🇴 485 314 2ms 21 Sep 2024 509th dokutan 483 315 1ms 17 Apr 2024 510th jakobkordez 🇸🇮 482 284 10ms 31 Oct 2022 511th gotbadger 477 233 50ms 21 Nov 2024 512th zakariamouhid 477 286 9ms 27 Feb 2023 513th neihousaigaai 477 287 10ms 27 Dec 2021 513th eshilo-draper 477 287 9ms 21 Sep 2022 513th Ythaenagor 477 287 10ms 5 Aug 2024 516th proton 🇩🇪 475 234 48ms 20 Jun 2020 517th iznax 473 281 364ms 21 Nov 2021 518th trinityy-7 470 290 9ms 19 Jul 2023 518th wh3n3v3r 🇨🇿 470 290 9ms 11 Nov 2024 520th neihousaigaai 469 291 9ms 15 Mar 2021 521st Yewzir 🇧🇪 469 329 7ms 26 Dec 2024 522nd MeWhenI 🇻🇦 468 282 156ms 3 Aug 2024 523rd Bonjour27891 🇻🇳 467 293 11ms 10 Apr 2022 524th randolchance 466 294 12ms 20 Jun 2025 525th janbehrens 🇩🇪 466 308 440ms 20 Nov 2022 526th edre 464 295 10ms 30 Apr 2018 527th ForkKILLET 🇨🇳 461 296 9ms 21 Feb 2021 528th guilhem-roy 🇫🇷 460 298 10ms 3 Mar 2022 529th relet 458 299 14ms 9 Aug 2018 529th leon-w 458 299 16ms 5 Jan 2019 531st evanrittner 457 300 12ms 26 Feb 2021 532nd graft 456 244 43ms 11 Mar 2018 533rd erin-allison 456 250 275ms 31 Mar 2021 534th msbranicky 453 272 1,048ms 17 Jan 2024 535th stefangimmillaro 451 270 2ms 28 Oct 2025 536th martinnorling 🇸🇪 451 304 9ms 22 Feb 2022 537th janbehrens 🇩🇪 450 285 2ms 21 Mar 2022 538th JRaspass 🇬🇧 449 241 3ms 19 Feb 2018 539th CaedenHarper 🇨🇦 449 304 9ms 6 Nov 2025 540th mbittner20 449 305 10ms 21 Jan 2024 541st kypi 448 306 10ms 20 Feb 2020 542nd Kees-van-Beilen 447 305 10ms 14 May 2023 542nd LukeBridges 🇬🇧 447 305 10ms 20 Aug 2024 544th alemelis 446 269 1,136ms 4 Mar 2024 545th tomh1012 446 306 9ms 14 Sep 2020 545th GeorgeStechman 🇬🇧 446 306 9ms 20 Nov 2022 547th alangodfrey 446 307 16ms 31 Jan 2019 547th ianpoe 446 307 12ms 20 Apr 2020 549th varhammer 🇷🇺 446 369 9ms 23 Nov 2021 550th ian-h-chamberlain 🇺🇸 446 406 42ms 21 Oct 2025 551st AlexDaniel 🇪🇪 445 259 191ms 13 Mar 2018 552nd robin-scragg 443 309 9ms 18 Oct 2025 553rd lhulinsky 442 310 9ms 22 Oct 2024 554th bbakersmith 442 342 24ms 31 Jul 2021 555th junkondo-jp 441 309 10ms 11 Jun 2024 556th strattonwhisler 440 310 10ms 22 Apr 2022 557th zdzc 440 311 16ms 30 Mar 2018 558th Giantnoodlemonster 439 292 2ms 29 Sep 2024 559th Schmitt-Very-Cool 439 359 576ms 2 Oct 2025 560th LorenzoTa 438 247 2ms 26 Apr 2019 First Prev 481–560 of 983 Next Last
