The Calendar hole will go live in approximately 8 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 snoozingnewt 🇨🇦 671 187 183ms 30 Oct 2025 242nd jerrandolph 665 270 279ms 24 Sep 2025 243rd DanielVenable 664 189 233ms 26 Mar 2025 244th MeWhenI 🇻🇦 659 244 522ms 7 Nov 2025 245th zacjl 658 122 161ms 29 Mar 2025 246th error256 655 303 70ms 25 Apr 2025 247th ovs-code 🇩🇪 654 130 666ms 6 Apr 2025 248th Shanethegamer 🇺🇸 654 192 205ms 27 Mar 2025 249th AlephSquirrel 653 123 76ms 16 Jan 2025 249th Natanaelel 🇸🇪 653 123 26ms 31 Mar 2025 249th lynn 653 123 26ms 7 Apr 2025 249th BlankSpruce 653 123 26ms 13 Apr 2025 249th m-tkach 🇺🇦 653 123 25ms 14 Apr 2025 249th Bulmenisaurus 653 123 28ms 30 Jun 2025 249th SirBogman 🇺🇸 653 123 26ms 1 Jul 2025 249th edsrzf 🇳🇿 653 123 26ms 27 Sep 2025 249th bzijlema 🇳🇱 653 123 27ms 25 days ago 258th emgordon154 653 177 161ms 27 Mar 2025 259th edsrzf 🇳🇿 652 202 166ms 27 Apr 2025 260th Shanethegamer 🇺🇸 651 114 467ms 8 Mar 2025 261st olleicua 🇺🇸 648 90 53ms 22 Apr 2025 262nd anter69 🇭🇺 648 120 1,227ms 1 Apr 2025 263rd btnlq 648 124 26ms 6 Jan 2025 263rd inventshah 648 124 33ms 31 Mar 2025 263rd Lv0Sys 🇵🇱 648 124 25ms 13 days ago 266th SirBogman 🇺🇸 643 73 342ms 10 Jul 2025 267th davecame 642 125 24ms 12 Apr 2025 268th DialFrost 🇸🇬 640 114 371ms 24 Jun 2025 269th CLOStrophobic 🇮🇹 639 212 3,887ms 22 Apr 2025 270th Shanethegamer 🇺🇸 637 126 26ms 13 Feb 2025 270th annaproxy 637 126 27ms 7 Apr 2025 270th ryyyn 🇺🇸 637 126 20ms 24 Apr 2025 270th 5cw 🇺🇸 637 126 26ms 30 May 2025 274th error256 637 282 279ms 25 Apr 2025 275th sean-niemann 🇺🇸 635 253 496ms 4 days ago 276th SirBogman 🇺🇸 634 92 54ms 19 Jul 2025 277th DialFrost 🇸🇬 632 127 25ms 18 Feb 2025 277th bizy-coder 632 127 35ms 18 Feb 2025 277th bricknellj 632 127 26ms 28 Mar 2025 277th cros107 🇦🇺 632 127 25ms 30 Mar 2025 277th souta-1326 632 127 27ms 1 Apr 2025 277th bknower 632 127 26ms 29 Jun 2025 283rd namelessiw 628 191 463ms 1 Aug 2025 284th HumanoidCPU 627 128 39ms 29 Mar 2025 284th scpchicken 🇵🇼 627 128 26ms 13 Apr 2025 284th stefangimmillaro 627 128 105ms 28 Apr 2025 284th MeWhenI 🇻🇦 627 128 28ms 13 Jul 2025 284th solisolu 627 128 26ms 18 days ago 289th CaedenHarper 🇨🇦 625 257 467ms 6 Oct 2025 290th duckyluuk 🇳🇱 624 119 656ms 6 Jul 2025 291st snoozingnewt 🇨🇦 623 129 768ms 17 days ago 292nd neihousaigaai 622 129 19ms 5 Apr 2025 292nd ahmetdemirag 🇨🇾 622 129 26ms 5 Apr 2025 294th commandblockguy 🇺🇸 619 120 638ms 1 Sep 2025 294th KatieLG 🇬🇧 619 120 678ms 22 Sep 2025 296th GrayJoKing 🇦🇺 618 130 40ms 1 Apr 2025 296th rollershutter 618 130 27ms 8 Apr 2025 296th InigoK 🇺🇸 618 130 25ms 19 Sep 2025 299th Natanaelel 🇸🇪 617 108 1,062ms 26 Mar 2025 300th m-tkach 🇺🇦 615 263 42ms 8 May 2025 301st AlephSquirrel 614 121 505ms 31 Mar 2025 301st SirBogman 🇺🇸 614 121 645ms 1 Jul 2025 303rd commandblockguy 🇺🇸 613 131 32ms 28 Mar 2025 304th CaedenHarper 🇨🇦 613 143 848ms 2 Oct 2025 305th emgordon154 611 54 18ms 18 Nov 2025 306th m-tkach 🇺🇦 609 122 582ms 21 Apr 2025 307th emgordon154 608 96 83ms 27 Mar 2025 308th ovs-code 🇩🇪 608 120 1,422ms 17 Apr 2025 309th OllieBoyne 🇬🇧 608 132 28ms 3 Apr 2025 310th snoozingnewt 🇨🇦 607 217 140ms 20 Nov 2025 311th kmathis22 607 265 463ms 11 Oct 2025 312th Salutations45 606 139 61ms 12 Apr 2025 313th CornerMercury 🇬🇧 604 123 556ms 4 Nov 2025 314th mousetail 🇳🇱 604 133 18ms 3 Apr 2025 314th jtaxen 604 133 26ms 20 Oct 2025 316th Shanethegamer 🇺🇸 601 97 94ms 13 Feb 2025 317th error256 600 163 36ms 15 Apr 2025 318th DialFrost 🇸🇬 600 268 518ms 24 Sep 2025 319th HumanoidCPU 599 124 435ms 29 Mar 2025 319th FEZfan 🇦🇺 599 124 552ms 26 Apr 2025 First Prev 241–320 of 461 Next Last