The Calendar hole will go live in approximately 8 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 81st JayXon 🇺🇸 871 175 1,411ms 16 Jan 2023 82nd GrayJoKing 🇦🇺 871 191 403ms 17 Mar 2023 83rd stefangimmillaro 871 216 319ms 23 Sep 2024 84th stefangimmillaro 869 118 4,435ms 19 Nov 2024 85th annaproxy 869 181 18ms 16 Jan 2023 86th ovs-code 🇩🇪 868 169 83ms 20 Apr 2024 87th prplz 🇦🇺 867 112 9ms 13 Oct 2019 87th 13x1 🇩🇪 867 112 9ms 15 May 2023 87th vlpx 🇫🇮 867 112 9ms 1 Aug 2024 87th rucin93 🇵🇱 867 112 10ms 19 Jan 2025 91st sean-niemann 🇺🇸 867 156 2ms 24 Aug 2025 92nd sean-niemann 🇺🇸 867 190 3ms 10 Sep 2025 93rd MeWhenI 🇻🇦 867 192 385ms 27 Jul 2024 94th edsrzf 🇳🇿 865 159 160ms 18 hours ago 95th JayXon 🇺🇸 865 178 113ms 24 May 2025 96th sean-niemann 🇺🇸 863 185 2ms 19 Nov 2025 97th edsrzf 🇳🇿 862 167 4ms 29 Mar 2025 98th Steffan153 🇫🇮 861 79 59ms 29 Aug 2024 99th albanian-laundromat 858 192 2ms 19 Sep 2025 100th saito-ta 🇯🇵 857 120 7ms 6 Jun 2022 101st DialFrost 🇸🇬 856 100 451ms 2 Aug 2024 102nd edsrzf 🇳🇿 855 289 4ms 22 Feb 2025 103rd primo-ppcg 🇹🇭 854 219 59ms 25 Jun 2022 104th Yax42 🇫🇷 852 160 436ms 11 Feb 2025 105th stefangimmillaro 850 207 39ms 10 Apr 2024 106th primo-ppcg 🇹🇭 847 105 14ms 5 Oct 2020 106th kg583 🇺🇸 847 105 33ms 3 hours ago 108th edsrzf 🇳🇿 847 188 46ms 16 Aug 2025 109th kg583 🇺🇸 846 155 6ms 18 days ago 110th Natanaelel 🇸🇪 845 120 35ms 29 Oct 2023 111th primo-ppcg 🇹🇭 844 197 37ms 6 Jul 2022 112th saito-ta 🇯🇵 843 130 16ms 6 Jun 2022 113th edsrzf 🇳🇿 843 295 1,744ms 8 Apr 2025 114th SirBogman 🇺🇸 842 209 41ms 3 Jun 2025 115th canissimia 🇦🇶 842 304 10ms 25 Mar 2024 116th inventshah 841 152 2ms 24 Jan 2023 116th nwellnhof 🇩🇪 841 152 2ms 3 Jun 2024 118th stefangimmillaro 841 162 373ms 20 Oct 2023 119th sean-niemann 🇺🇸 840 81 89ms 12 Oct 2025 120th GrayJoKing 🇦🇺 839 102 391ms 23 Jul 2024 121st error256 839 328 733ms 9 Jun 2025 122nd inventshah 834 159 518ms 24 Jan 2023 123rd MeWhenI 🇻🇦 833 198 7ms 8 Aug 2023 124th lifthrasiir 🇰🇷 831 103 372ms 2 Dec 2024 125th SirBogman 🇺🇸 830 109 247ms 23 Jul 2025 126th GrayJoKing 🇦🇺 826 225 28ms 13 Mar 2023 127th lifthrasiir 🇰🇷 824 108 16ms 16 Nov 2024 128th Irratix 🇳🇱 823 118 10ms 24 Jan 2023 129th primo-ppcg 🇹🇭 823 462 11ms 25 Jun 2025 130th typeswitch-dev 🇵🇹 821 246 4ms 27 Aug 2023 131st CornerMercury 🇬🇧 809 110 18ms 3 Nov 2025 132nd GrayJoKing 🇦🇺 809 146 128ms 24 Oct 2023 133rd ovs-code 🇩🇪 809 158 2ms 29 May 2024 134th kg583 🇺🇸 808 124 7ms 18 days ago 135th Natanaelel 🇸🇪 803 95 3ms 10 Jun 2023 135th SirBogman 🇺🇸 803 95 3ms 2 Nov 2023 137th andersk 🇺🇸 803 222 190ms 23 Mar 2020 138th prplz 🇦🇺 794 161 2ms 19 Jan 2023 139th peeveen 🇬🇧 791 238 303ms 10 Oct 2023 140th KasperKivimaeki 🇫🇮 789 162 2ms 14 Nov 2025 141st SirBogman 🇺🇸 787 113 17ms 23 Jan 2024 142nd GrayJoKing 🇦🇺 787 200 17ms 14 Jan 2024 143rd primo-ppcg 🇹🇭 783 174 327ms 21 Nov 2021 144th MeWhenI 🇻🇦 782 173 2ms 27 Jan 2023 145th prplz 🇦🇺 780 114 10ms 25 Oct 2019 146th MeWhenI 🇻🇦 777 481 15ms 6 Dec 2023 147th anter69 🇭🇺 773 115 14ms 8 Jan 2023 147th ndren 773 115 10ms 2 Nov 2025 149th AlephSquirrel 772 170 6ms 15 Jan 2025 150th MeWhenI 🇻🇦 772 228 41ms 7 Aug 2023 151st MeWhenI 🇻🇦 771 114 2ms 15 Feb 2025 152nd MeWhenI 🇻🇦 769 157 4ms 12 Aug 2024 153rd Artemis21 🇬🇧 767 116 11ms 10 Jan 2025 154th kg583 🇺🇸 766 208 44ms 14 Feb 2025 155th ovs-code 🇩🇪 764 97 382ms 26 Jul 2024 156th Steffan153 🇫🇮 764 120 1,210ms 8 Apr 2023 157th MeWhenI 🇻🇦 762 202 131ms 27 Jan 2023 158th stefangimmillaro 762 234 190ms 17 Nov 2024 159th adyache 🇺🇸 760 217 7ms 14 Jul 2023 160th primo-ppcg 🇹🇭 759 137 7ms 3 Jul 2023 First Prev 81–160 of 871 Next Last