The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Forsyth–Edwards Notation 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 lynn 812 186 339ms 10 Nov 2025 242nd ovs-code 🇩🇪 810 135 14ms 1 Jul 2024 243rd snoozingnewt 🇨🇦 810 136 96ms 13 days ago 244th inventshah 809 167 2ms 11 Jan 2024 244th Yewzir 🇧🇪 809 167 2ms 19 Nov 2025 244th edsrzf 🇳🇿 809 167 1ms 19 Nov 2025 247th Alessandro-Balconi 🇮🇹 807 121 77ms 1 May 2023 248th neel11235813 806 94 464ms 16 Jan 2024 249th itsh01 806 119 9ms 1 May 2023 250th Yewzir 🇧🇪 806 220 1,766ms 17 May 2024 251st sean-niemann 🇺🇸 805 195 268ms 29 Aug 2023 252nd nwellnhof 🇩🇪 803 121 1ms 6 May 2023 253rd edsrzf 🇳🇿 802 201 30ms 29 Apr 2025 254th emgordon154 802 322 408ms 9 Mar 2025 254th Shanethegamer 🇺🇸 802 322 1,447ms 14 Apr 2025 256th MeWhenI 🇻🇦 800 75 4ms 1 May 2023 257th sisyphus-ppcg 🇦🇺 799 131 7ms 23 Nov 2023 258th duckyluuk 🇳🇱 799 151 9ms 14 Jan 2025 259th DialFrost 🇸🇬 799 161 498ms 5 Jun 2024 260th SirBogman 🇺🇸 798 92 286ms 18 May 2024 261st Shanethegamer 🇺🇸 798 205 30ms 9 May 2023 262nd primo-ppcg 🇹🇭 796 54 57ms 5 May 2023 263rd emgordon154 794 102 948ms 11 Aug 2024 264th typeswitch-dev 🇵🇹 794 161 3ms 1 Sep 2023 265th albanian-laundromat 792 103 11ms 23 Apr 2025 266th edsrzf 🇳🇿 792 182 1,340ms 18 Jun 2025 267th nwellnhof 🇩🇪 791 124 398ms 10 May 2023 268th edsrzf 🇳🇿 790 78 33ms 2 Sep 2025 269th ovs-code 🇩🇪 790 145 85ms 3 Jun 2024 270th edsrzf 🇳🇿 789 157 2ms 18 Jun 2025 271st Steffan153 🇫🇮 787 103 4ms 17 Aug 2024 272nd dylanarmstrong 786 122 9ms 23 Jan 2024 272nd two-bad 🇬🇧 786 122 8ms 24 Feb 2024 274th edsrzf 🇳🇿 786 167 7ms 17 Jun 2025 275th SirBogman 🇺🇸 783 197 41ms 3 Jun 2025 276th GrayJoKing 🇦🇺 783 209 26ms 24 May 2023 277th snoozingnewt 🇨🇦 782 97 444ms 12 Oct 2025 278th albanian-laundromat 780 79 44ms 31 Oct 2025 279th pardouin 🇫🇷 779 104 1,085ms 23 Jul 2025 280th Shanethegamer 🇺🇸 779 161 385ms 3 May 2023 281st SirBogman 🇺🇸 778 87 32ms 4 Dec 2023 282nd emgordon154 778 127 4,538ms 28 Feb 2025 283rd FlorianCassayre 🇫🇷 776 105 16ms 24 Sep 2023 283rd KatieLG 🇬🇧 776 105 11ms 25 May 2025 285th Steffan153 🇫🇮 774 117 3ms 27 Feb 2024 286th inventshah 774 148 400ms 27 Mar 2025 287th Protothor 773 124 9ms 31 May 2025 288th SirBogman 🇺🇸 770 71 2ms 4 Dec 2023 289th olleicua 🇺🇸 770 80 53ms 23 Mar 2024 290th ovs-code 🇩🇪 768 56 49ms 25 Feb 2025 291st albanian-laundromat 766 99 381ms 4 Aug 2025 292nd Steffan153 🇫🇮 766 128 398ms 9 Aug 2024 293rd MeWhenI 🇻🇦 765 106 4ms 16 Aug 2024 294th ovs-code 🇩🇪 765 127 2ms 16 Feb 2024 294th Steffan153 🇫🇮 765 127 1ms 17 Aug 2024 294th inventshah 765 127 1ms 27 Mar 2025 297th emgordon154 765 168 577ms 8 Jun 2025 298th wh3n3v3r 🇨🇿 762 107 10ms 13 Nov 2024 299th pardouin 🇫🇷 761 81 70ms 30 Jul 2025 300th Natanaelel 🇸🇪 761 89 33ms 11 Feb 2024 301st helbling 🇨🇭 761 126 9ms 24 Sep 2024 302nd Shanethegamer 🇺🇸 761 148 116ms 24 May 2025 303rd edsrzf 🇳🇿 761 168 3ms 14 Oct 2025 304th blaztoma 🇱🇹 760 145 123ms 17 days ago 305th GolfingSuccess 🇬🇷 758 107 4ms 18 Aug 2024 306th kg583 🇺🇸 757 164 4ms 2 days ago 307th Shanethegamer 🇺🇸 756 139 102ms 3 May 2023 308th niklv 🇷🇺 755 127 9ms 14 May 2023 309th stefangimmillaro 755 208 268ms 6 May 2025 310th lynn 754 57 59ms 17 Oct 2023 311th DialFrost 🇸🇬 754 120 3ms 25 Oct 2023 312th stefangimmillaro 754 131 3,975ms 14 Nov 2024 313th Shanethegamer 🇺🇸 754 174 5ms 4 Oct 2024 314th ovs-code 🇩🇪 752 100 600ms 16 Feb 2024 315th sean-niemann 🇺🇸 752 169 40ms 9 Dec 2023 316th jacobly0 🇺🇸 752 236 1,649ms 22 Apr 2024 317th DialFrost 🇸🇬 751 108 742ms 31 Aug 2025 317th CaedenHarper 🇨🇦 751 108 721ms 16 Sep 2025 319th 2bular 749 73 2ms 11 Nov 2025 320th sean-niemann 🇺🇸 749 153 83ms 7 Jul 2025 First Prev 241–320 of 828 Next Last