The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Set 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 jerrandolph 665 270 279ms 24 Sep 2025 242nd DanielVenable 664 189 233ms 26 Mar 2025 243rd zacjl 658 122 161ms 29 Mar 2025 244th MeWhenI 🇻🇦 657 244 522ms 7 Nov 2025 245th error256 655 303 70ms 25 Apr 2025 246th ovs-code 🇩🇪 654 130 666ms 6 Apr 2025 247th Shanethegamer 🇺🇸 654 192 205ms 27 Mar 2025 248th AlephSquirrel 653 123 76ms 16 Jan 2025 248th Natanaelel 🇸🇪 653 123 26ms 31 Mar 2025 248th lynn 653 123 26ms 7 Apr 2025 248th BlankSpruce 653 123 26ms 13 Apr 2025 248th m-tkach 🇺🇦 653 123 25ms 14 Apr 2025 248th Bulmenisaurus 653 123 28ms 30 Jun 2025 248th SirBogman 🇺🇸 653 123 26ms 1 Jul 2025 248th edsrzf 🇳🇿 653 123 26ms 27 Sep 2025 248th bzijlema 🇳🇱 653 123 27ms 20 days ago 257th emgordon154 653 177 161ms 27 Mar 2025 258th edsrzf 🇳🇿 652 202 166ms 27 Apr 2025 259th Shanethegamer 🇺🇸 651 114 467ms 8 Mar 2025 260th btnlq 648 124 26ms 6 Jan 2025 260th inventshah 648 124 33ms 31 Mar 2025 260th Lv0Sys 🇵🇱 648 124 25ms 8 days ago 263rd olleicua 🇺🇸 647 90 53ms 22 Apr 2025 264th anter69 🇭🇺 647 120 1,227ms 1 Apr 2025 265th SirBogman 🇺🇸 643 73 342ms 10 Jul 2025 266th davecame 642 125 24ms 12 Apr 2025 267th DialFrost 🇸🇬 640 114 371ms 24 Jun 2025 268th CLOStrophobic 🇮🇹 639 212 3,887ms 22 Apr 2025 269th Shanethegamer 🇺🇸 637 126 26ms 13 Feb 2025 269th annaproxy 637 126 27ms 7 Apr 2025 269th ryyyn 🇺🇸 637 126 20ms 24 Apr 2025 269th 5cw 🇺🇸 637 126 26ms 30 May 2025 273rd error256 637 282 279ms 25 Apr 2025 274th SirBogman 🇺🇸 633 92 54ms 19 Jul 2025 275th DialFrost 🇸🇬 632 127 25ms 18 Feb 2025 275th bizy-coder 632 127 35ms 18 Feb 2025 275th bricknellj 632 127 26ms 28 Mar 2025 275th cros107 🇦🇺 632 127 25ms 30 Mar 2025 275th souta-1326 632 127 27ms 1 Apr 2025 275th bknower 632 127 26ms 29 Jun 2025 281st namelessiw 628 191 463ms 1 Aug 2025 282nd HumanoidCPU 627 128 39ms 29 Mar 2025 282nd scpchicken 🇵🇼 627 128 26ms 13 Apr 2025 282nd stefangimmillaro 627 128 105ms 28 Apr 2025 282nd MeWhenI 🇻🇦 627 128 28ms 13 Jul 2025 282nd solisolu 627 128 26ms 13 days ago 287th duckyluuk 🇳🇱 624 119 656ms 6 Jul 2025 288th CaedenHarper 🇨🇦 624 257 467ms 6 Oct 2025 289th snoozingnewt 🇨🇦 623 129 768ms 12 days ago 290th neihousaigaai 622 129 19ms 5 Apr 2025 290th ahmetdemirag 🇨🇾 622 129 26ms 5 Apr 2025 292nd commandblockguy 🇺🇸 619 120 638ms 1 Sep 2025 292nd KatieLG 🇬🇧 619 120 678ms 22 Sep 2025 294th GrayJoKing 🇦🇺 618 130 40ms 1 Apr 2025 294th rollershutter 618 130 27ms 8 Apr 2025 294th InigoK 🇺🇸 618 130 25ms 19 Sep 2025 297th Natanaelel 🇸🇪 617 108 1,062ms 26 Mar 2025 298th m-tkach 🇺🇦 615 263 42ms 8 May 2025 299th AlephSquirrel 614 121 505ms 31 Mar 2025 299th SirBogman 🇺🇸 614 121 645ms 1 Jul 2025 301st commandblockguy 🇺🇸 613 131 32ms 28 Mar 2025 302nd CaedenHarper 🇨🇦 613 143 848ms 2 Oct 2025 303rd emgordon154 611 54 18ms 18 Nov 2025 304th m-tkach 🇺🇦 609 122 582ms 21 Apr 2025 305th ovs-code 🇩🇪 608 120 1,422ms 17 Apr 2025 306th OllieBoyne 🇬🇧 608 132 28ms 3 Apr 2025 307th emgordon154 607 96 83ms 27 Mar 2025 308th snoozingnewt 🇨🇦 607 217 140ms 20 Nov 2025 309th Salutations45 606 139 61ms 12 Apr 2025 310th kmathis22 605 265 463ms 11 Oct 2025 311th CornerMercury 🇬🇧 604 123 556ms 4 Nov 2025 312th mousetail 🇳🇱 604 133 18ms 3 Apr 2025 312th jtaxen 604 133 26ms 20 Oct 2025 314th Shanethegamer 🇺🇸 600 97 94ms 13 Feb 2025 315th error256 600 163 32ms 15 Apr 2025 316th HumanoidCPU 599 124 435ms 29 Mar 2025 316th FEZfan 🇦🇺 599 124 552ms 26 Apr 2025 318th ImpressedByRocks 599 134 27ms 29 Apr 2025 319th DialFrost 🇸🇬 598 268 518ms 24 Sep 2025 320th madex 🇩🇪 595 135 26ms 13 Feb 2025 First Prev 241–320 of 458 Next Last