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 321st inventshah 601 155 10ms 24 Jan 2023 321st AlephSquirrel 601 155 9ms 27 Aug 2023 321st mateusz-sterczewski 601 155 10ms 20 Nov 2024 324th adamnielson42 🇺🇸 601 176 2ms 5 Dec 2023 325th Natanaelel 🇸🇪 599 183 34ms 18 Nov 2023 326th weliveinhell 🇭🇹 596 183 10ms 24 Sep 2023 327th MeWhenI 🇻🇦 593 254 1,373ms 25 Jun 2023 328th MeWhenI 🇻🇦 593 303 46ms 30 Dec 2023 329th kaascevich 592 292 121ms 22 Jul 2025 330th bstrautin 591 162 278ms 26 Jul 2020 331st MeWhenI 🇻🇦 591 165 820ms 15 Sep 2025 332nd JDiLenarda 🇫🇷 591 255 1,468ms 29 Nov 2023 333rd StardustGogeta 590 158 16ms 5 Aug 2020 333rd zbreit 🇺🇸 590 158 10ms 5 Aug 2020 333rd rschwa6308 🇺🇸 590 158 11ms 6 Aug 2020 333rd thisishowmymindworks 🇳🇴 590 158 10ms 12 Oct 2020 337th ryyyn 🇺🇸 586 159 10ms 18 days ago 338th nathanadams 🇳🇿 586 186 10ms 7 Sep 2021 339th billings7 🇬🇧 585 182 369ms 21 Nov 2021 339th primo-ppcg 🇹🇭 585 182 358ms 21 Nov 2021 341st tatzyr 🇯🇵 583 138 62ms 24 Feb 2025 342nd dokutan 582 233 512ms 30 Mar 2025 343rd Natanaelel 🇸🇪 580 188 10ms 9 Jun 2023 344th emgordon154 579 176 1,028ms 20 Aug 2024 345th MeWhenI 🇻🇦 576 150 717ms 13 Jul 2024 346th dokutan 576 209 1ms 30 Mar 2025 347th alexkunin 571 191 10ms 4 Jul 2019 348th MeWhenI 🇻🇦 570 153 390ms 15 Feb 2023 349th phdphil 569 128 128ms 9 Apr 2018 350th marcin7Cd 568 164 10ms 14 Mar 2020 350th bricknellj 568 164 10ms 20 Feb 2023 350th blaztoma 🇱🇹 568 164 10ms 4 hours ago 353rd trinityy-7 568 192 10ms 5 Oct 2023 354th stefangimmillaro 567 188 370ms 11 Oct 2023 355th primo-ppcg 🇹🇭 567 244 707ms 18 Oct 2021 355th janbehrens 🇩🇪 567 244 565ms 27 Jul 2022 357th AlexDaniel 🇪🇪 565 129 191ms 13 Mar 2018 358th daedals 565 165 9ms 29 May 2019 358th jared-hughes 565 165 10ms 10 Jan 2023 360th Alex-x90 🇺🇸 565 240 74ms 30 Dec 2022 361st xkacer 🇨🇿 565 245 633ms 25 Jan 2021 362nd GrayJoKing 🇦🇺 563 143 43ms 20 Jul 2021 363rd Alex-x90 🇺🇸 563 214 2ms 30 Dec 2022 364th hiddicop 🇸🇪 559 144 44ms 30 Jan 2021 365th emgordon154 559 222 9ms 12 Dec 2024 366th abailey2020 🇺🇸 559 320 121ms 20 Aug 2020 367th jakobkordez 🇸🇮 558 167 10ms 31 Oct 2022 368th blaztoma 🇱🇹 558 268 151ms 21 days ago 369th MeWhenI 🇻🇦 557 273 3ms 2 Oct 2022 370th stefangimmillaro 555 145 42ms 26 Dec 2024 371st boxjelly 555 322 121ms 23 Feb 2021 372nd rucin93 🇵🇱 550 172 143ms 31 Oct 2024 373rd roavin 549 194 355ms 23 Jun 2022 373rd janbehrens 🇩🇪 549 194 355ms 10 Jul 2023 375th megaturbo 549 294 295ms 25 Jun 2020 376th shelerr 548 170 10ms 21 Aug 2025 377th KatieLG 🇬🇧 548 199 10ms 6 Apr 2022 377th dokutan 548 199 10ms 28 Mar 2025 379th DialFrost 🇸🇬 545 160 378ms 19 Jan 2024 380th Natanaelel 🇸🇪 544 126 3ms 14 Jun 2023 381st James-Oswald 🇺🇸 544 249 472ms 10 Sep 2024 382nd Natanaelel 🇸🇪 540 135 262ms 9 Jun 2023 383rd voytxt 🇨🇿 540 202 10ms 30 Jul 2024 384th Mabeloid 🇳🇴 539 274 2ms 21 Sep 2024 385th jared-hughes 537 150 38ms 20 Sep 2022 386th BambooleanLogic 🇸🇪 537 203 9ms 19 Oct 2022 387th RDShah 536 174 18ms 1 Dec 2019 388th lacroixjonathan87 536 211 4ms 15 Sep 2020 389th user189032 534 204 10ms 29 May 2019 389th Lv0Sys 🇵🇱 534 204 9ms 21 days ago 391st stefangimmillaro 533 175 10ms 29 Dec 2022 392nd elisherer 🇮🇱 532 205 10ms 13 Apr 2019 393rd SirBogman 🇺🇸 530 163 807ms 20 Jan 2024 394th Lv0Sys 🇵🇱 530 176 10ms 21 days ago 395th tdkkdt 🇷🇺 530 201 381ms 21 Nov 2021 396th janbehrens 🇩🇪 528 165 275ms 13 Jul 2022 397th KatieLG 🇬🇧 528 193 1,133ms 25 Apr 2021 398th BisheruBlade888 527 257 74ms 14 Jan 2022 398th MeWhenI 🇻🇦 527 257 492ms 7 May 2023 400th bluebear94 524 139 277ms 2 Mar 2018 First Prev 321–400 of 979 Next Last
