The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Farey Sequence 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 240th MeWhenI 🇻🇦 890 79 83ms 1 Dec 2023 240th stefangimmillaro 890 79 82ms 28 Apr 2024 243rd duckyluuk 🇳🇱 889 60 344ms 28 Aug 2024 243rd albanian-laundromat 889 60 396ms 1 Oct 2025 243rd snoozingnewt 🇨🇦 889 60 400ms 15 Oct 2025 246th Shanethegamer 🇺🇸 889 84 4ms 1 Dec 2023 246th primo-ppcg 🇹🇭 889 84 4ms 25 Jan 2025 246th kg583 🇺🇸 889 84 4ms 7 Nov 2025 249th sgiandomenico 888 65 9ms 18 Dec 2023 250th sean-niemann 🇺🇸 888 71 41ms 3 Dec 2023 250th JayXon 🇺🇸 888 71 1,303ms 6 Dec 2023 252nd inventshah 888 96 67ms 1 Dec 2023 253rd emplv 🇱🇻 888 107 25ms 1 Dec 2023 253rd sean-niemann 🇺🇸 888 107 25ms 4 Dec 2023 253rd m-tkach 🇺🇦 888 107 24ms 5 Dec 2023 253rd DialFrost 🇸🇬 888 107 25ms 7 Dec 2023 253rd JayXon 🇺🇸 888 107 24ms 7 Dec 2023 253rd Steffan153 🇫🇮 888 107 25ms 19 Aug 2024 259th IanUtley 887 73 10ms 1 Dec 2023 260th emgordon154 887 82 3,868ms 3 Jul 2025 260th JayXon 🇺🇸 887 82 3,454ms 3 Jul 2025 262nd UnderKoen 🇳🇱 887 96 5ms 12 Mar 2025 263rd duckyluuk 🇳🇱 886 82 154ms 25 Dec 2024 263rd MeWhenI 🇻🇦 886 82 14ms 30 Dec 2024 263rd GolfingSuccess 🇬🇷 886 82 11ms 13 Jan 2025 263rd GrayJoKing 🇦🇺 886 82 15ms 3 Feb 2025 267th AlephSquirrel 885 26 83ms 27 Dec 2023 268th MeWhenI 🇻🇦 885 66 11ms 1 Dec 2023 269th edsrzf 🇳🇿 885 109 280ms 30 Dec 2024 269th CaedenHarper 🇨🇦 885 109 251ms 27 days ago 269th albanian-laundromat 885 109 246ms 15 days ago 272nd MeWhenI 🇻🇦 883 81 42ms 13 Feb 2025 273rd sean-niemann 🇺🇸 882 63 975ms 24 Mar 2024 273rd DialFrost 🇸🇬 882 63 933ms 18 Dec 2024 275th sean-niemann 🇺🇸 882 90 5ms 13 Jan 2025 275th DialFrost 🇸🇬 882 90 3ms 31 Mar 2025 277th GrayJoKing 🇦🇺 881 71 126ms 2 Dec 2023 278th DialFrost 🇸🇬 881 80 17ms 26 Feb 2025 279th MeWhenI 🇻🇦 881 86 428ms 7 Nov 2025 279th namelessiw 881 86 382ms 15 Nov 2025 281st AlephSquirrel 881 87 9ms 5 Aug 2024 282nd emgordon154 880 95 122ms 20 days ago 282nd DialFrost 🇸🇬 880 95 115ms 20 days ago 282nd blaztoma 🇱🇹 880 95 114ms 18 days ago 282nd snoozingnewt 🇨🇦 880 95 108ms 13 days ago 282nd GolfingSuccess 🇬🇷 880 95 114ms 12 days ago 287th sisyphus-ppcg 🇦🇺 879 63 7ms 4 Dec 2023 288th MeWhenI 🇻🇦 879 97 65ms 1 Dec 2023 288th Alex-x90 🇺🇸 879 97 62ms 11 May 2024 290th Shanethegamer 🇺🇸 878 75 2ms 1 Dec 2023 291st DialFrost 🇸🇬 878 97 3ms 10 Mar 2025 292nd DialFrost 🇸🇬 877 51 3ms 1 Dec 2023 292nd ovs-code 🇩🇪 877 51 5ms 1 Dec 2023 294th MeWhenI 🇻🇦 877 67 105ms 1 Dec 2023 295th lynn 877 83 131ms 19 Oct 2025 296th stefangimmillaro 877 110 257ms 29 Apr 2024 297th canissimia 🇦🇶 877 112 4,961ms 29 Dec 2023 298th canissimia 🇦🇶 877 188 3ms 31 Dec 2023 299th DialFrost 🇸🇬 876 83 4,728ms 24 Oct 2024 300th Yewzir 🇧🇪 875 61 358ms 26 May 2024 301st Shanethegamer 🇺🇸 875 66 9ms 1 Dec 2023 301st duckyluuk 🇳🇱 875 66 9ms 9 Oct 2024 303rd DialFrost 🇸🇬 875 72 42ms 17 Oct 2024 304th ovs-code 🇩🇪 875 74 10ms 4 Jul 2024 305th DialFrost 🇸🇬 875 81 4ms 18 Mar 2025 306th Steffan153 🇫🇮 874 62 1ms 5 Dec 2023 306th DialFrost 🇸🇬 874 62 2ms 14 Dec 2023 306th ovs-code 🇩🇪 874 62 2ms 15 Dec 2023 306th sean-niemann 🇺🇸 874 62 2ms 28 Dec 2023 306th primo-ppcg 🇹🇭 874 62 2ms 25 Jan 2025 311th Shanethegamer 🇺🇸 874 82 26ms 1 Dec 2023 312th GrayJoKing 🇦🇺 873 60 129ms 10 Aug 2024 313th lifthrasiir 🇰🇷 873 143 9ms 19 Dec 2024 314th inventshah 872 74 4ms 1 Dec 2023 314th GolfingSuccess 🇬🇷 872 74 2ms 4 Dec 2023 316th sisyphus-ppcg 🇦🇺 871 58 9ms 4 Dec 2023 317th Shanethegamer 🇺🇸 871 87 438ms 25 Sep 2025 318th edsrzf 🇳🇿 871 96 112ms 12 days ago 319th DialFrost 🇸🇬 870 77 40ms 25 Apr 2025 320th MeWhenI 🇻🇦 870 93 424ms 1 Dec 2023 First Prev 241–320 of 1,473 Next Last