The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Forsyth–Edwards Notation 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 81st scpchicken 🇵🇼 911 68 3ms 1 May 2023 81st Steffan153 🇫🇮 911 68 4ms 2 May 2023 81st GrayJoKing 🇦🇺 911 68 4ms 2 May 2023 84th AdrienHache 🇫🇷 910 73 53ms 26 Nov 2024 85th btnlq 907 126 9ms 6 May 2023 85th m-tkach 🇺🇦 907 126 9ms 13 May 2023 85th ZakkkkAttackkkk 🇵🇭 907 126 10ms 11 Nov 2023 88th Shanethegamer 🇺🇸 907 146 151ms 8 May 2023 88th ovs-code 🇩🇪 907 146 113ms 9 May 2023 88th lynn 907 146 148ms 11 May 2023 88th Sakisan 🇧🇪 907 146 135ms 26 Jun 2023 92nd Steffan153 🇫🇮 905 118 128ms 18 Aug 2024 93rd edsrzf 🇳🇿 904 150 482ms 6 hours ago 94th clockworknazo 902 135 4ms 23 Jun 2023 94th GrayJoKing 🇦🇺 902 135 7ms 9 Nov 2023 96th KasperKivimaeki 🇫🇮 902 177 250ms 8 Oct 2025 97th Sakisan 🇧🇪 901 116 16ms 25 May 2023 98th ovs-code 🇩🇪 901 133 65ms 23 Mar 2024 99th Seek64 🇩🇪 900 127 10ms 25 Jun 2025 100th JayXon 🇺🇸 899 193 154ms 27 Mar 2025 101st Natanaelel 🇸🇪 898 69 4ms 24 Jun 2023 102nd rucin93 🇵🇱 897 153 2ms 12 Nov 2025 103rd edsrzf 🇳🇿 896 142 97ms 17 Jun 2025 104th edsrzf 🇳🇿 896 143 6ms 17 Jun 2025 105th ovs-code 🇩🇪 894 99 1ms 3 May 2023 105th Shanethegamer 🇺🇸 894 99 2ms 14 Feb 2025 107th GrayJoKing 🇦🇺 894 134 64ms 9 days ago 108th pardouin 🇫🇷 893 115 4,151ms 21 Nov 2024 109th MeWhenI 🇻🇦 893 125 9ms 26 Feb 2025 110th IanUtley 893 127 14ms 5 Dec 2023 111th b-illy 🇬🇧 893 128 10ms 15 Aug 2024 111th Bulmenisaurus 893 128 9ms 29 Jan 2025 113th JayXon 🇺🇸 893 157 2ms 9 Nov 2023 114th JayXon 🇺🇸 892 95 1,098ms 3 Apr 2024 114th stefangimmillaro 892 95 966ms 24 May 2025 116th nwellnhof 🇩🇪 892 152 456ms 25 Sep 2025 117th sean-niemann 🇺🇸 890 148 564ms 8 Jul 2025 118th AlephSquirrel 889 63 48ms 1 May 2023 119th ovs-code 🇩🇪 889 77 43ms 1 May 2023 119th prplz 🇦🇺 889 77 49ms 9 May 2023 121st emplv 🇱🇻 889 121 4ms 3 Jul 2023 122nd Steffan153 🇫🇮 889 133 75ms 9 Jun 2023 123rd edsrzf 🇳🇿 889 149 6ms 20 Feb 2025 124th bizy-coder 888 109 522ms 11 Oct 2024 125th JayXon 🇺🇸 888 162 4,180ms 3 Apr 2024 126th edsrzf 🇳🇿 887 129 106ms 17 days ago 127th GrayJoKing 🇦🇺 887 146 40ms 23 May 2023 127th edsrzf 🇳🇿 887 146 385ms 23 Jul 2025 129th JayXon 🇺🇸 887 180 285ms 1 Nov 2023 130th Steffan153 🇫🇮 886 129 9ms 9 May 2023 130th hallvabo 🇳🇴 886 129 9ms 21 Oct 2023 130th 5cw 🇺🇸 886 129 9ms 2 Aug 2024 133rd GrayJoKing 🇦🇺 886 139 11ms 20 Nov 2025 134th namelessiw 886 153 449ms 8 Oct 2025 134th Yax42 🇫🇷 886 153 359ms 14 Oct 2025 136th galloj 🇨🇿 885 100 2ms 8 May 2023 137th JayXon 🇺🇸 885 132 110ms 24 May 2025 138th CLOStrophobic 🇮🇹 885 151 6ms 9 Feb 2025 138th kg583 🇺🇸 885 151 6ms 10 Feb 2025 140th kg583 🇺🇸 884 150 8ms 13 Oct 2025 141st GrayJoKing 🇦🇺 883 121 132ms 12 Aug 2024 142nd primo-ppcg 🇹🇭 883 145 4ms 21 Aug 2023 143rd Steffan153 🇫🇮 883 150 147ms 21 May 2023 144th btnlq 882 120 393ms 9 May 2023 144th tomtheisen 🇺🇸 882 120 367ms 13 Feb 2025 144th Yax42 🇫🇷 882 120 394ms 2 Jun 2025 147th Shanethegamer 🇺🇸 881 154 627ms 24 Sep 2025 148th Lydxn 🇨🇦 880 110 522ms 16 Jan 2024 149th dmrichwa 🇺🇸 879 127 9ms 28 May 2023 150th bzijlema 🇳🇱 879 130 9ms 23 Jul 2025 151st Steffan153 🇫🇮 878 145 99ms 4 May 2023 152nd Natanaelel 🇸🇪 876 101 1ms 5 May 2023 153rd GrayJoKing 🇦🇺 876 135 77ms 22 May 2023 154th edsrzf 🇳🇿 876 185 2ms 5 Mar 2025 155th 386asm 🇺🇸 875 148 37ms 4 May 2023 156th GrayJoKing 🇦🇺 875 149 3ms 30 Jul 2023 157th sean-niemann 🇺🇸 875 155 486ms 24 Sep 2025 158th Steffan153 🇫🇮 874 97 943ms 2 May 2023 159th targrik 874 123 5ms 1 Aug 2025 160th Shanethegamer 🇺🇸 873 168 1,343ms 12 May 2023 First Prev 81–160 of 832 Next Last