The Calendar hole will go live in approximately 11 days. Why not try and solve it ahead of time?
Morse Decoder in all languages in bytes. 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 Bytes Time Submitted 161st andersk 🇺🇸 824 222 190ms 23 Mar 2020 162nd SirBogman 🇺🇸 822 139 243ms 23 Jul 2025 163rd MeWhenI 🇻🇦 821 171 565ms 7 Nov 2025 164th prplz 🇦🇺 820 161 2ms 19 Jan 2023 165th primo-ppcg 🇹🇭 819 158 16ms 2 Jan 2021 166th GrayJoKing 🇦🇺 818 150 508ms 16 Jan 2024 167th AlephSquirrel 816 170 6ms 15 Jan 2025 168th MeWhenI 🇻🇦 816 173 2ms 27 Jan 2023 169th KasperKivimaeki 🇫🇮 815 162 2ms 14 Nov 2025 170th 5cw 🇺🇸 814 159 14ms 7 Aug 2025 170th blaztoma 🇱🇹 814 159 12ms 68 mins ago 172nd Irratix 🇳🇱 810 150 9ms 24 Jan 2023 173rd MeWhenI 🇻🇦 808 157 4ms 12 Aug 2024 174th ryyyn 🇺🇸 804 161 15ms 3 days ago 175th MeWhenI 🇻🇦 799 117 2ms 15 Feb 2025 176th Steffan153 🇫🇮 798 176 481ms 11 Jul 2024 177th MeWhenI 🇻🇦 798 228 41ms 7 Aug 2023 178th MeWhenI 🇻🇦 793 481 15ms 6 Dec 2023 179th kg583 🇺🇸 792 175 5ms 16 days ago 180th primo-ppcg 🇹🇭 791 137 5ms 3 Jul 2023 181st MeWhenI 🇻🇦 790 202 131ms 27 Jan 2023 182nd SirBogman 🇺🇸 789 129 292ms 15 Jan 2023 183rd lynn 789 143 3ms 20 Apr 2021 184th MeWhenI 🇻🇦 789 154 9ms 26 Feb 2025 185th CaedenHarper 🇨🇦 789 164 9ms 1 Aug 2025 186th okhoel 🇳🇴 788 145 256ms 30 Sep 2022 187th CaedenHarper 🇨🇦 786 156 813ms 1 Aug 2025 188th jared-hughes 784 155 10ms 14 Jan 2023 189th AlephSquirrel 783 112 51ms 28 Dec 2023 190th edsrzf 🇳🇿 783 136 821ms 16 Sep 2025 191st stefangimmillaro 782 234 190ms 17 Nov 2024 192nd MeWhenI 🇻🇦 781 195 84ms 28 Jan 2023 193rd blaztoma 🇱🇹 780 266 109ms 19 days ago 194th AlephSquirrel 779 166 14ms 13 Aug 2023 195th error256 778 160 76ms 24 May 2025 196th Natanaelel 🇸🇪 775 131 49ms 9 Jun 2023 197th MeWhenI 🇻🇦 775 144 1,130ms 12 May 2023 198th peeveen 🇬🇧 769 250 341ms 10 Oct 2023 199th MeWhenI 🇻🇦 768 147 3ms 16 Apr 2023 200th MeWhenI 🇻🇦 767 149 251ms 28 Jan 2023 201st kg583 🇺🇸 767 176 6ms 16 days ago 202nd tomtheisen 🇺🇸 763 195 403ms 11 Feb 2025 203rd kg583 🇺🇸 762 161 434ms 19 Jul 2024 204th xkacer 🇨🇿 760 160 10ms 25 Jan 2021 205th UnderKoen 🇳🇱 760 332 2ms 29 Jan 2024 206th MeWhenI 🇻🇦 759 196 360ms 26 Jul 2023 207th MeWhenI 🇻🇦 758 218 1ms 12 Oct 2023 208th kg583 🇺🇸 757 171 16ms 12 Jan 2025 209th jared-hughes 753 200 1ms 28 Feb 2022 210th lifthrasiir 🇰🇷 752 163 613ms 2 Dec 2024 211th Bulmenisaurus 752 172 9ms 30 Jul 2024 212th MeWhenI 🇻🇦 751 256 287ms 17 Apr 2023 213th targrik 750 162 9ms 7 Jun 2025 214th edsrzf 🇳🇿 750 201 2ms 17 Apr 2025 215th antimon2 🇯🇵 749 123 749ms 29 Sep 2025 216th CornerMercury 🇬🇧 748 173 10ms 3 Nov 2025 217th adyache 🇺🇸 745 244 7ms 14 Jul 2023 218th AlephSquirrel 743 165 540ms 21 Jan 2024 219th Natanaelel 🇸🇪 742 152 5ms 12 Feb 2023 220th inventshah 739 175 9ms 18 Jan 2023 220th lifthrasiir 🇰🇷 739 175 9ms 14 Nov 2024 222nd primo-ppcg 🇹🇭 739 190 681ms 9 Apr 2022 223rd MeWhenI 🇻🇦 738 179 7ms 1 Jan 2025 224th CLOStrophobic 🇮🇹 738 188 6ms 20 Feb 2025 225th prplz 🇦🇺 735 176 10ms 18 Nov 2020 226th MeWhenI 🇻🇦 735 262 33ms 6 Jun 2023 227th inventshah 734 167 563ms 16 Jan 2024 228th jared-hughes 733 208 474ms 30 Aug 2022 229th stefangimmillaro 732 218 2,664ms 31 May 2023 230th lynn 729 168 14ms 23 Jul 2021 231st kg583 🇺🇸 729 292 42ms 13 Feb 2025 232nd SirBogman 🇺🇸 728 147 34ms 28 Aug 2022 233rd Natanaelel 🇸🇪 727 140 199ms 26 Apr 2023 234th lynn 727 251 162ms 30 Jan 2023 235th hiddicop 🇸🇪 726 140 36ms 31 Jan 2021 236th edsrzf 🇳🇿 723 253 175ms 23 Jan 2025 237th NewDefectus 🇮🇱 722 131 55ms 22 Mar 2024 238th anter69 🇭🇺 720 141 34ms 14 Jan 2023 238th SirBogman 🇺🇸 720 141 44ms 23 Jul 2025 240th MeWhenI 🇻🇦 720 148 806ms 15 Sep 2025 First Prev 161–240 of 873 Next Last