The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
ROT13 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 641st MeWhenI 🇻🇦 641 33 72ms 6 Jan 2025 642nd gigaprofisi 🇺🇸 641 129 10ms 7 Aug 2025 643rd DialFrost 🇸🇬 639 101 137ms 3 Jan 2025 644th luuumine 🇫🇷 638 103 4ms 12 days ago 645th BambooleanLogic 🇸🇪 636 130 10ms 17 Jul 2025 646th HumanoidCPU 636 132 422ms 8 Nov 2025 647th dokutan 635 120 2ms 5 Feb 2025 648th MostParsingVex 633 159 25ms 6 Jan 2025 649th DialFrost 🇸🇬 632 87 7ms 11 Jan 2025 650th The3gs 632 161 173ms 25 Jan 2025 651st Ephellon 631 131 9ms 1 Feb 2025 652nd MeWhenI 🇻🇦 629 80 1,062ms 6 Jan 2025 653rd HahUK 629 173 262ms 10 Nov 2025 654th BREMAUCY 🇫🇷 629 284 14ms 6 Aug 2025 655th kirjavascript 628 162 168ms 18 Mar 2025 656th CaedenHarper 🇨🇦 627 134 562ms 7 Oct 2025 656th kmathis22 627 134 503ms 31 Oct 2025 658th weliveinhell 🇭🇹 626 132 10ms 26 Jun 2025 659th Shanethegamer 🇺🇸 624 114 428ms 6 Jan 2025 660th Shanethegamer 🇺🇸 624 138 7ms 5 Jan 2025 661st grey0ut 623 79 287ms 9 Jan 2025 662nd MostParsingVex 623 100 141ms 7 Jan 2025 663rd KasperKivimaeki 🇫🇮 622 114 368ms 5 Jan 2025 664th DialFrost 🇸🇬 622 135 448ms 24 Sep 2025 665th prestosilver 🇺🇸 621 136 340ms 2 days ago 666th Mandrzejy 🇵🇱 620 135 509ms 5 Jan 2025 667th the-zammers 619 167 152ms 2 Feb 2025 668th jerrandolph 618 176 270ms 23 Sep 2025 669th LukeBridges 🇬🇧 617 134 9ms 8 Jan 2025 670th szymex73 🇵🇱 614 107 2ms 17 Jan 2025 670th Efgeen 🇸🇪 614 107 4ms 17 Nov 2025 672nd pardouin 🇫🇷 613 161 90ms 25 Apr 2025 673rd tayloia 🇬🇧 612 135 10ms 12 Jan 2025 674th edsrzf 🇳🇿 609 178 339ms 2 Mar 2025 675th tatzyr 🇯🇵 608 81 232ms 5 Mar 2025 676th firewoods1978 608 108 1ms 9 Jan 2025 676th Maashau 608 108 5ms 21 days ago 678th KrausRaus 🇺🇸 608 136 10ms 3 Jan 2025 679th bac0id 607 138 479ms 10 Jan 2025 680th Jacob385 604 139 435ms 28 Oct 2025 681st Protothor 603 137 10ms 11 Jun 2025 682nd emgordon154 603 143 34ms 3 Jan 2025 683rd dokutan 603 166 3ms 4 Feb 2025 684th juliansiebert 🇩🇪 601 82 307ms 1 Mar 2025 685th arcpolaris 601 118 410ms 10 Jan 2025 685th snoozingnewt 🇨🇦 601 118 412ms 2 Nov 2025 687th snoozingnewt 🇨🇦 601 181 286ms 2 Nov 2025 688th luuumine 🇫🇷 598 140 79ms 12 days ago 689th MostParsingVex 598 153 15ms 5 Jan 2025 690th Shanethegamer 🇺🇸 597 108 137ms 8 Jan 2025 690th pardouin 🇫🇷 597 108 134ms 29 Jul 2025 692nd Herbert00709 🇵🇱 597 110 5ms 5 Jan 2025 693rd dbut2 🇦🇺 595 183 275ms 14 Jan 2025 694th ikskuh 594 139 10ms 27 Jun 2025 694th alexsave 594 139 10ms 7 Oct 2025 696th Maximizer02 594 145 9ms 10 Jan 2025 697th c0d3-4-F00d 🇩🇪 592 111 2ms 9 Jan 2025 697th wansacis 🇩🇪 592 111 2ms 30 Jan 2025 697th prestosilver 🇺🇸 592 111 2ms 18 Nov 2025 700th msbranicky 592 169 5ms 1 Jun 2025 701st Yewzir 🇧🇪 592 208 2,667ms 14 Nov 2025 702nd emgordon154 591 120 7ms 12 Jan 2025 703rd rbobillot 591 345 424ms 13 Jan 2025 704th Jay2k1 590 63 6ms 6 Nov 2025 705th two-bad 🇬🇧 590 140 9ms 22 Feb 2025 706th Yewzir 🇧🇪 590 142 593ms 6 Jan 2025 707th ikskuh 589 209 1,658ms 27 Jun 2025 708th madex 🇩🇪 587 112 2ms 4 Jan 2025 708th Mandrzejy 🇵🇱 587 112 1ms 5 Jan 2025 710th snoozingnewt 🇨🇦 587 143 592ms 2 Nov 2025 711th martindotexe 🇳🇴 585 186 290ms 16 May 2025 712th emgordon154 584 93 4,866ms 2 Aug 2025 713th CheeseCake628 🇳🇴 584 97 13ms 20 May 2025 714th dokutan 584 144 3ms 12 Feb 2025 715th Shanethegamer 🇺🇸 584 177 138ms 3 Jan 2025 715th WatMan77 584 177 132ms 27 May 2025 717th Shanethegamer 🇺🇸 583 143 1,244ms 4 Jan 2025 718th mousetail 🇳🇱 579 59 24ms 6 Feb 2025 719th HumanoidCPU 579 95 7ms 1 Feb 2025 720th Ripick 579 146 343ms 15 Feb 2025 First Prev 641–720 of 965 Next Last