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 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 480th InigoK 🇺🇸 360 247 9ms 6 Sep 2025 482nd yuchuehw 360 358 677ms 4 Jan 2024 483rd Yewzir 🇧🇪 360 691 2,630ms 15 Nov 2025 484th scpchicken 🇵🇼 359 248 16ms 7 Apr 2022 485th JOrE20 🇺🇸 358 271 9ms 12 days ago 486th skps2010 357 249 17ms 28 Dec 2018 486th Indivicivet 357 249 10ms 18 Oct 2021 488th tomh1012 357 382 378ms 2 days ago 489th Phanabani 🇺🇸 353 252 10ms 22 Oct 2020 490th msbranicky 352 535 315ms 31 Aug 2023 491st cellobix 350 254 16ms 15 Aug 2019 492nd proton 🇩🇪 349 195 37ms 9 Jun 2020 492nd jaredcrystal 🇺🇸 349 195 42ms 14 Dec 2020 494th Ted-Barrett 🇦🇺 349 255 9ms 1 Oct 2021 495th daedals 346 257 17ms 21 Jun 2019 495th rollershutter 346 257 10ms 9 Sep 2022 497th scpchicken 🇵🇼 343 189 373ms 7 Apr 2022 498th schachmattmatt 342 260 10ms 20 Aug 2021 499th Natanaelel 🇸🇪 342 301 6ms 23 Jun 2023 500th hiichbindermax 338 263 9ms 26 days ago 501st dokutan 338 472 2ms 28 Mar 2025 502nd janbehrens 🇩🇪 337 180 3ms 6 May 2021 503rd robin-scragg 337 264 10ms 23 Jul 2025 504th rvdnieuwendijk 🇳🇱 337 268 309ms 29 Jun 2020 505th williamlake 337 527 131ms 17 Sep 2021 506th yokasuretsu 336 265 9ms 26 Apr 2018 506th petar-donchev 336 265 10ms 8 Sep 2019 506th JunkIce 336 265 18ms 24 Nov 2024 509th krcs 🇵🇱 334 266 9ms 30 Jun 2023 510th Dazza314 🇬🇧 333 267 9ms 4 Nov 2020 511th Laksen 🇩🇰 333 562 27ms 8 Jul 2021 512th myfatemi04 332 268 10ms 20 Sep 2018 512th Evan-Robotics 332 268 11ms 28 Jan 2022 514th dokutan 332 434 8ms 4 Feb 2025 515th Bonjour27891 🇻🇳 331 269 12ms 20 Mar 2022 516th msbranicky 330 484 2ms 14 Oct 2023 517th glesnick 327 272 11ms 15 Jul 2022 518th vibdev 326 298 10ms 26 Aug 2021 519th bkshrader 325 274 16ms 27 Dec 2018 520th JunkIce 323 265 525ms 3 Dec 2024 521st geofft 323 275 10ms 13 Dec 2020 521st mbittner20 323 275 10ms 21 Jan 2024 523rd DrakeSeteraO 322 276 10ms 10 Nov 2025 523rd GodlyProgrammer1 322 276 16ms 25 days ago 525th wuminws 322 318 4,081ms 20 Feb 2025 526th KatieLG 🇬🇧 321 424 395ms 24 Oct 2022 527th naveenarun 319 279 10ms 6 Jun 2019 528th NanduBC 318 280 10ms 22 Mar 2021 529th marcin7Cd 318 412 44ms 11 Mar 2021 530th Emutis 🇱🇹 317 281 14ms 14 Nov 2025 531st postie77 316 431 362ms 2 May 2023 532nd amollberg 🇸🇪 312 285 15ms 15 Jan 2022 533rd galloj 🇨🇿 312 330 3ms 17 Jan 2023 534th luuumine 🇫🇷 311 286 10ms 29 Oct 2025 535th mrxz 🇳🇱 311 312 10ms 23 Jun 2024 536th bbakersmith 310 361 14ms 31 Jul 2021 537th yokasuretsu 309 220 36ms 26 Apr 2018 538th dylanarmstrong 309 314 11ms 15 Sep 2024 539th Anonymousellama21 308 334 2ms 16 May 2022 540th karhuthebear 307 290 9ms 5 May 2022 540th SniperSmiley 🇺🇸 307 290 9ms 4 Jul 2022 542nd MeWhenI 🇻🇦 307 416 2ms 25 Aug 2023 543rd davecame 306 291 10ms 15 Mar 2024 544th LukeBridges 🇬🇧 306 317 9ms 21 Aug 2024 545th JVerwolf 305 292 14ms 27 Aug 2021 546th Yewzir 🇧🇪 304 293 10ms 19 May 2023 547th juliansiebert 🇩🇪 303 298 346ms 20 Jan 2023 548th LucaArgentiUCF 🇮🇹 302 582 42ms 23 Jan 2021 549th TheZwierzLF 🇵🇱 301 284 672ms 4 days ago 550th neihousaigaai 301 428 658ms 18 Apr 2021 551st CaedenHarper 🇨🇦 300 324 9ms 6 Nov 2025 552nd neihousaigaai 297 327 9ms 14 May 2021 553rd chunky 297 832 2ms 1 Oct 2020 554th BenBanerjeeRichards 296 300 9ms 12 Nov 2021 555th TimCurwick 🇺🇸 296 305 269ms 28 Jul 2020 556th s-g-stavely 296 414 1ms 11 May 2021 557th alexhuntley 295 444 5ms 11 Apr 2021 558th fgrosshans 🇫🇷 293 304 9ms 9 May 2023 559th Yewzir 🇧🇪 292 293 394ms 15 Jan 2024 560th MaxCastella 🇫🇷 292 310 296ms 15 Mar 2024 First Prev 481–560 of 870 Next Last
