The Calendar hole will go live in approximately 7 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 Yax42 🇫🇷 826 180 401ms 18 Jan 2025 162nd GrayJoKing 🇦🇺 826 200 17ms 14 Jan 2024 163rd andersk 🇺🇸 824 222 190ms 23 Mar 2020 164th SirBogman 🇺🇸 822 139 243ms 23 Jul 2025 165th MeWhenI 🇻🇦 821 171 565ms 7 Nov 2025 166th prplz 🇦🇺 820 161 2ms 19 Jan 2023 167th primo-ppcg 🇹🇭 819 158 16ms 2 Jan 2021 167th blaztoma 🇱🇹 819 158 10ms 3 days ago 169th GrayJoKing 🇦🇺 818 150 508ms 16 Jan 2024 169th kg583 🇺🇸 818 150 940ms 33 hours ago 171st AlephSquirrel 816 170 6ms 15 Jan 2025 172nd MeWhenI 🇻🇦 816 173 2ms 27 Jan 2023 173rd KasperKivimaeki 🇫🇮 815 162 2ms 14 Nov 2025 174th 5cw 🇺🇸 814 159 14ms 7 Aug 2025 175th Irratix 🇳🇱 810 150 9ms 24 Jan 2023 175th targrik 810 150 10ms 23 hours ago 177th MeWhenI 🇻🇦 808 157 4ms 12 Aug 2024 178th ryyyn 🇺🇸 804 161 15ms 6 days ago 179th MeWhenI 🇻🇦 799 117 2ms 15 Feb 2025 180th Steffan153 🇫🇮 798 176 481ms 11 Jul 2024 181st MeWhenI 🇻🇦 798 228 41ms 7 Aug 2023 182nd MeWhenI 🇻🇦 793 481 15ms 6 Dec 2023 183rd kg583 🇺🇸 792 175 5ms 20 days ago 184th primo-ppcg 🇹🇭 791 137 6ms 3 Jul 2023 185th MeWhenI 🇻🇦 790 202 131ms 27 Jan 2023 186th SirBogman 🇺🇸 789 129 217ms 15 Jan 2023 187th lynn 789 143 3ms 20 Apr 2021 188th MeWhenI 🇻🇦 789 154 9ms 26 Feb 2025 189th CaedenHarper 🇨🇦 789 164 9ms 1 Aug 2025 190th okhoel 🇳🇴 788 145 256ms 30 Sep 2022 191st CaedenHarper 🇨🇦 786 156 813ms 1 Aug 2025 192nd jared-hughes 784 155 10ms 14 Jan 2023 193rd AlephSquirrel 783 112 38ms 28 Dec 2023 194th edsrzf 🇳🇿 783 136 821ms 16 Sep 2025 195th stefangimmillaro 782 234 190ms 17 Nov 2024 196th MeWhenI 🇻🇦 781 195 84ms 28 Jan 2023 197th AlephSquirrel 779 166 14ms 13 Aug 2023 198th error256 778 160 76ms 24 May 2025 199th Natanaelel 🇸🇪 775 131 36ms 9 Jun 2023 200th MeWhenI 🇻🇦 775 144 1,130ms 12 May 2023 201st peeveen 🇬🇧 769 250 341ms 10 Oct 2023 202nd MeWhenI 🇻🇦 768 147 3ms 16 Apr 2023 203rd MeWhenI 🇻🇦 767 149 251ms 28 Jan 2023 204th kg583 🇺🇸 767 176 6ms 20 days ago 205th tomtheisen 🇺🇸 763 195 403ms 11 Feb 2025 206th xkacer 🇨🇿 760 160 10ms 25 Jan 2021 207th UnderKoen 🇳🇱 760 332 2ms 29 Jan 2024 208th MeWhenI 🇻🇦 759 196 360ms 26 Jul 2023 209th MeWhenI 🇻🇦 758 218 1ms 12 Oct 2023 210th jared-hughes 753 200 4ms 28 Feb 2022 211th lifthrasiir 🇰🇷 752 163 613ms 2 Dec 2024 212th Bulmenisaurus 752 172 9ms 30 Jul 2024 213th MeWhenI 🇻🇦 751 256 287ms 17 Apr 2023 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 440ms 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 148ms 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 42ms 23 Jul 2025 240th MeWhenI 🇻🇦 720 148 806ms 15 Sep 2025 First Prev 161–240 of 874 Next Last