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 321st AlexDaniel 🇪🇪 536 121 158ms 13 Mar 2018 322nd AlephSquirrel 536 166 14ms 13 Aug 2023 323rd janbehrens 🇩🇪 535 239 2ms 21 Mar 2022 324th emgordon154 534 463 2ms 9 Jun 2025 325th snoozingnewt 🇨🇦 533 309 3ms 9 Nov 2025 326th BambooleanLogic 🇸🇪 530 183 10ms 5 Jul 2023 327th alexkunin 528 184 9ms 6 Jul 2019 328th tatzyr 🇯🇵 527 129 60ms 25 Mar 2025 329th MeWhenI 🇻🇦 522 142 585ms 14 Feb 2023 330th Natanaelel 🇸🇪 519 131 49ms 9 Jun 2023 331st AlephSquirrel 519 165 540ms 21 Jan 2024 332nd coreynash 519 187 9ms 25 May 2023 333rd Natanaelel 🇸🇪 518 343 131ms 22 Jan 2023 334th Bulmenisaurus 517 172 9ms 30 Jul 2024 335th lacroixjonathan87 515 202 4ms 3 Jan 2021 336th ShiraJoseph 🇺🇸 514 189 10ms 28 Apr 2022 337th inventshah 512 167 563ms 16 Jan 2024 338th unfinishedprogram 511 190 9ms 14 Jul 2023 339th lynn 510 102 57ms 19 Oct 2023 340th dokutan 510 240 2ms 21 Apr 2024 341st filharmonista 509 251 2ms 9 Mar 2020 342nd h3ra993huskp 🇯🇵 509 253 810ms 18 days ago 343rd inventshah 508 175 9ms 18 Jan 2023 344th moikaturns 🇬🇧 508 191 9ms 10 Nov 2022 345th gnlow 🇰🇷 506 192 9ms 18 Feb 2021 346th JDiLenarda 🇫🇷 506 301 1,451ms 29 Nov 2023 347th marcin7Cd 503 177 15ms 14 Mar 2020 348th eranws 503 193 9ms 1 Nov 2022 349th billings7 🇬🇧 501 272 335ms 19 May 2024 350th MeWhenI 🇻🇦 499 330 2ms 10 Sep 2022 351st janbehrens 🇩🇪 498 195 10ms 17 Jun 2023 352nd jwhear 🇺🇸 497 500 1,752ms 30 Sep 2024 353rd alexsave 495 196 9ms 4 days ago 354th marcin7Cd 493 519 6ms 16 Nov 2020 355th gastropner 492 260 2ms 24 Dec 2020 356th tobeannouncd 492 361 123ms 8 Jan 2024 357th m-tkach 🇺🇦 491 181 10ms 31 Dec 2022 358th MeWhenI 🇻🇦 490 232 101ms 27 Jan 2023 359th janbehrens 🇩🇪 488 272 2,808ms 20 Nov 2022 360th hiddicop 🇸🇪 486 140 36ms 31 Jan 2021 361st BREMAUCY 🇫🇷 486 183 9ms 24 Jul 2025 362nd emgordon154 486 211 4,402ms 3 Nov 2024 363rd GrayJoKing 🇦🇺 484 180 91ms 10 Aug 2023 364th KatieLG 🇬🇧 482 141 528ms 26 May 2021 365th janbehrens 🇩🇪 481 216 5ms 2 Jul 2023 366th janbehrens 🇩🇪 480 261 606ms 24 Mar 2022 367th davitf 478 186 9ms 30 Oct 2018 368th Kibble 478 203 9ms 27 Jul 2020 369th scpchicken 🇵🇼 473 128 2ms 24 Feb 2023 370th emgordon154 472 305 4ms 26 Jan 2025 371st elisherer 🇮🇱 469 207 10ms 18 Apr 2019 371st weliveinhell 🇭🇹 469 207 9ms 1 Feb 2024 373rd Ripick 469 355 340ms 11 Aug 2024 374th bluebear94 467 139 234ms 2 Mar 2018 375th MeWhenI 🇻🇦 467 187 128ms 3 Aug 2024 376th olleicua 🇺🇸 466 146 49ms 25 Mar 2025 377th dokutan 466 159 743ms 8 Sep 2025 378th bwat2 465 277 687ms 8 Mar 2022 379th AlephSquirrel 464 112 51ms 28 Dec 2023 380th Natanaelel 🇸🇪 464 140 199ms 26 Apr 2023 381st Lv0Sys 🇵🇱 462 210 9ms 18 days ago 382nd albanian-laundromat 461 193 10ms 3 Apr 2025 383rd SirBogman 🇺🇸 460 186 496ms 23 Jul 2025 384th nullshallot 459 197 306ms 7 Jan 2025 385th voytxt 🇨🇿 458 212 9ms 20 Feb 2025 386th iznax 454 300 359ms 21 Nov 2021 387th yzhs 🇩🇪 454 391 128ms 2 Aug 2021 388th elgan65536 450 396 194ms 6 Mar 2024 389th dzhang314 449 198 9ms 14 Aug 2019 389th StefanHabel 🇨🇦 449 198 10ms 11 Dec 2022 389th KatieLG 🇬🇧 449 198 10ms 15 Sep 2025 392nd cbondurant 447 199 15ms 10 May 2021 393rd jared-hughes 445 153 39ms 11 Dec 2022 394th kistlerf 🇨🇭 445 200 9ms 19 May 2025 394th qpwoeirut 445 200 16ms 29 Aug 2025 396th ahmetdemirag 🇨🇾 443 201 10ms 18 Nov 2024 397th emgordon154 443 226 7ms 13 Dec 2024 398th dokutan 439 199 131ms 8 Sep 2025 399th blaztoma 🇱🇹 438 203 10ms 14 Oct 2025 400th Natanaelel 🇸🇪 436 204 15ms 20 Jan 2023 First Prev 321–400 of 870 Next Last
