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 241st RYNO8 712 131 10ms 14 Oct 2021 242nd edsrzf 🇳🇿 712 137 821ms 8 days ago 243rd angel-p57 🇯🇵 712 486 2ms 7 Dec 2023 244th targrik 711 159 5ms 8 Aug 2025 245th AdrienHache 🇫🇷 710 150 360ms 8 Jan 2024 246th Natanaelel 🇸🇪 709 101 3ms 9 Jun 2023 247th dokutan 708 122 369ms 6 Nov 2024 248th MeWhenI 🇻🇦 708 144 1,192ms 12 May 2023 249th snoozingnewt 🇨🇦 708 244 108ms 20 Nov 2025 250th emgordon154 707 180 5ms 2 Aug 2025 251st MeWhenI 🇻🇦 707 212 2ms 12 Nov 2022 252nd Informagier 707 253 128ms 27 Sep 2020 253rd AlephSquirrel 706 85 42ms 28 Dec 2023 254th tomtheisen 🇺🇸 705 151 363ms 20 Dec 2022 255th emgordon154 705 171 2ms 5 Sep 2025 256th MeWhenI 🇻🇦 704 245 1,800ms 22 Apr 2024 257th jacklynnepenick 701 133 11ms 15 Aug 2021 258th emgordon154 700 135 120ms 6 Sep 2024 259th MeWhenI 🇻🇦 699 205 79ms 8 Nov 2023 260th MeWhenI 🇻🇦 697 208 4ms 6 Aug 2023 261st KatieLG 🇬🇧 697 248 88ms 15 Jan 2023 262nd MeWhenI 🇻🇦 696 162 129ms 17 Nov 2022 263rd stefangimmillaro 695 232 284ms 13 Dec 2024 264th MeWhenI 🇻🇦 694 203 92ms 12 Dec 2022 265th aditsu 686 159 9ms 29 Dec 2019 265th emgordon154 686 159 11ms 1 Aug 2024 267th emgordon154 684 140 272ms 4 Sep 2025 268th Natanaelel 🇸🇪 682 262 127ms 9 Jun 2023 269th stefangimmillaro 679 251 217ms 13 Nov 2023 270th frankgraziano 678 190 20ms 5 Apr 2025 271st jared-hughes 677 161 9ms 22 Dec 2022 272nd MeWhenI 🇻🇦 677 188 5ms 12 Aug 2024 273rd stefangimmillaro 675 151 1,322ms 28 Aug 2023 274th PatrickStephansen 🇿🇦 673 162 9ms 15 Apr 2021 275th Ripick 672 226 432ms 11 Aug 2024 276th ovs-code 🇩🇪 671 120 50ms 22 Feb 2025 277th adamnielson42 🇺🇸 671 139 10ms 26 May 2023 278th MeWhenI 🇻🇦 669 201 1ms 13 Oct 2023 279th Eilonlif 🇮🇱 666 140 10ms 27 Oct 2022 280th antimon2 🇯🇵 665 131 687ms 2 Oct 2021 281st b10011 🇫🇮 661 141 16ms 29 Dec 2022 282nd MeWhenI 🇻🇦 661 145 281ms 28 Jan 2023 283rd edsrzf 🇳🇿 661 171 4ms 13 Feb 2025 284th dokutan 659 224 2ms 21 Apr 2024 285th annaproxy 656 221 16ms 22 Feb 2023 286th Steffan153 🇫🇮 655 123 50ms 31 Dec 2022 287th IISResetMe 652 147 282ms 19 days ago 288th dokutan 650 239 3ms 8 Sep 2025 289th albanian-laundromat 649 222 41ms 16 days ago 290th MeWhenI 🇻🇦 646 165 364ms 8 Dec 2022 291st sisyphus-ppcg 🇦🇺 644 125 51ms 17 Jan 2023 292nd MeWhenI 🇻🇦 643 192 103ms 26 Oct 2022 293rd ovs-code 🇩🇪 641 136 346ms 10 Mar 2024 294th 5cw 🇺🇸 639 146 10ms 2 Nov 2025 295th jupj 🇫🇮 637 189 2ms 31 Aug 2022 296th edsrzf 🇳🇿 637 195 8ms 8 days ago 297th stefangimmillaro 635 218 484ms 6 Oct 2025 298th lynn 634 113 3ms 27 May 2022 299th ovs-code 🇩🇪 634 147 10ms 16 Feb 2025 300th primo-ppcg 🇹🇭 634 151 271ms 16 Dec 2020 301st Steffan153 🇫🇮 634 196 10ms 7 Apr 2024 302nd ovs-code 🇩🇪 631 137 543ms 16 Feb 2025 303rd stuartcarnie 631 274 199ms 18 Apr 2020 304th frobinsonj 630 173 10ms 28 Mar 2018 304th NewDefectus 🇮🇱 630 173 9ms 26 Oct 2020 306th o0lit3 🇺🇸 629 109 3ms 14 Oct 2020 307th KatieLG 🇬🇧 629 420 3ms 16 Jan 2023 308th inventshah 628 179 278ms 12 Jul 2022 309th janbehrens 🇩🇪 627 209 478ms 24 Mar 2022 310th Seek64 🇩🇪 626 149 10ms 22 Sep 2024 311th dokutan 625 215 2ms 26 Sep 2025 312th adriweb 🇫🇷 623 237 36ms 21 Aug 2023 313th rzv-me 618 183 4ms 30 Sep 2024 314th dokutan 618 224 581ms 24 Sep 2025 315th janbehrens 🇩🇪 616 177 10ms 18 May 2023 316th Natanaelel 🇸🇪 610 132 44ms 9 Jun 2023 317th targrik 609 179 9ms 7 Jun 2025 318th stefangimmillaro 606 170 4,502ms 8 Nov 2024 319th janbehrens 🇩🇪 605 187 5ms 2 Jul 2023 320th h3ra993huskp 🇯🇵 602 230 660ms 21 days ago First Prev 241–320 of 978 Next Last