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 chars. 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 Chars Time Submitted 641st chunky 306 864 2ms 29 Sep 2020 642nd KevinMarquette 🇺🇸 304 315 258ms 23 Apr 2022 643rd SpareManiKatti 304 359 9ms 14 Oct 2021 644th Yewzir 🇧🇪 304 408 7ms 24 Dec 2023 645th madex 🇩🇪 304 561 308ms 23 Jun 2024 646th try-except-try-accept 🇹🇭 303 308 9ms 28 Jun 2022 647th osmith93 302 309 16ms 1 Aug 2021 647th Pyroan 302 309 10ms 22 Feb 2025 649th galloj 🇨🇿 302 373 3ms 31 Aug 2022 650th Irratix 🇳🇱 301 595 116ms 21 Nov 2021 651st logvp 300 311 16ms 31 Jan 2024 651st cykim8811 300 311 15ms 10 Jul 2024 653rd lukehewittvandy 300 462 729ms 15 Jun 2020 654th gXLg 🇩🇪 299 312 10ms 19 Sep 2023 654th andre-lameirinhas 🇵🇹 299 312 10ms 30 Nov 2023 656th TimCurwick 🇺🇸 299 320 242ms 29 Jul 2020 657th inverseLorentz 🇦🇺 297 314 12ms 21 Jun 2022 658th n1LS 296 272 43ms 26 Sep 2019 659th decorator-factory 296 315 9ms 21 May 2019 659th knutae 🇳🇴 296 315 16ms 20 Jul 2019 659th TobyBoyne 🇬🇧 296 315 10ms 14 Apr 2022 662nd bbakersmith 295 316 10ms 19 Jul 2021 663rd SteveL-MSFT 295 325 255ms 10 Jun 2020 664th ChrisTheisen 294 362 351ms 19 Dec 2022 665th unfinishedprogram 293 372 10ms 28 Nov 2023 666th Haksell 🇦🇶 292 319 17ms 1 Dec 2019 666th Florian-Mt 292 319 10ms 13 Nov 2023 668th jackkav 292 373 10ms 14 Apr 2018 669th dsntzn 🇸🇰 291 375 9ms 2 Mar 2021 670th Emutis 🇱🇹 290 321 10ms 12 Aug 2025 671st PaulMWeiser 290 322 12ms 3 Mar 2023 672nd garrisonhh 289 323 16ms 19 Nov 2020 673rd Laksen 🇩🇰 289 647 25ms 8 Jul 2021 674th LorenzoTa 287 239 2ms 26 Apr 2019 674th JRaspass 🇬🇧 287 239 3ms 22 May 2022 676th qwjhvbxi 287 325 10ms 12 Feb 2024 677th madex 🇩🇪 287 355 1,180ms 23 Jun 2024 678th ian-odonnell 287 380 9ms 14 Mar 2018 679th jgbaldwinbrown 285 422 2ms 9 Jul 2021 680th masflam 284 307 667ms 6 May 2021 681st dahrens 284 328 9ms 13 May 2021 682nd mrmena 🇦🇺 283 329 18ms 11 Jun 2021 683rd Edjyzod 283 330 10ms 31 Mar 2023 683rd MarshalX 🇵🇱 283 330 10ms 14 Nov 2024 685th msbranicky 283 364 4,936ms 11 Jan 2025 686th lomarbrick 282 331 9ms 17 May 2023 686th Mathrew2012 282 331 9ms 9 Nov 2024 688th arcage 🇯🇵 281 362 1,156ms 10 Aug 2021 689th TaserTheFox 🇺🇸 280 333 13ms 5 Apr 2023 690th MeWhenI 🇻🇦 280 509 14ms 28 Mar 2022 691st vaughad 280 616 91ms 21 Jan 2020 692nd KatieLG 🇬🇧 279 382 378ms 21 Nov 2021 693rd cam-lambda 279 542 5ms 1 May 2018 694th MaxElf999 277 336 9ms 28 Sep 2022 695th mcreenan 276 264 174ms 16 Jun 2018 696th biinari 276 292 45ms 25 Mar 2018 697th za3k 276 338 9ms 8 Oct 2022 697th CheeseCake628 🇳🇴 276 338 9ms 19 Jun 2025 699th adoxography 275 293 56ms 10 Mar 2020 699th yzhs 🇩🇪 275 293 44ms 20 Jul 2022 701st Psirving 275 339 11ms 2 Aug 2020 701st TheZwierzLF 🇵🇱 275 339 11ms 13 days ago 703rd alphafalfa 274 547 3ms 24 Oct 2024 704th TheAristos 273 341 11ms 30 Oct 2019 705th madex 🇩🇪 273 400 10ms 23 Jun 2024 706th vgamula 🇺🇦 272 343 9ms 7 Jul 2025 707th shaunjc 272 401 9ms 10 Jun 2021 708th MeWhenI 🇻🇦 272 971 2ms 8 Feb 2022 709th OllieBoyne 🇬🇧 270 345 11ms 23 Jan 2021 710th MeWhenI 🇻🇦 270 662 141ms 22 Mar 2024 711th codewrite 🇬🇧 269 347 10ms 12 Jul 2025 712th Kibble 269 406 10ms 13 Jul 2020 713th SoliGhost 268 348 12ms 8 Jun 2025 714th p-vf 🇨🇭 268 397 373ms 29 Sep 2021 715th Waffle3z 267 302 47ms 22 Jan 2021 716th jfallon1997 266 350 10ms 13 May 2024 717th dzshn 265 352 10ms 25 Nov 2020 717th stordev 265 352 9ms 26 Feb 2021 717th 77Tigers 265 352 10ms 28 May 2021 720th aksyristos 264 353 9ms 14 Mar 2023 First Prev 641–720 of 978 Next Last
