The Calendar hole will go live in approximately 13 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 800th calebaitken 484 117 11ms 16 Apr 2025 800th adoxography 484 117 10ms 31 Aug 2025 803rd gjoacorp 🇬🇧 481 174 438ms 4 Aug 2025 803rd dokutan 481 174 83ms 13 Nov 2025 805th madeforlosers 478 173 10ms 14 Jan 2025 806th HumanoidCPU 476 138 2ms 25 May 2025 807th snoozingnewt 🇨🇦 476 192 9ms 2 Nov 2025 808th dokutan 473 139 5ms 13 Nov 2025 809th yokasuretsu 472 120 11ms 12 Jul 2025 809th Bmrl7 472 120 17ms 25 days ago 811th HumanoidCPU 472 179 347ms 2 Feb 2025 812th snoozingnewt 🇨🇦 471 196 32ms 2 Nov 2025 813th Pale-Vessel 471 216 190ms 23 Sep 2025 814th emgordon154 466 141 5ms 5 Jan 2025 814th snoozingnewt 🇨🇦 466 141 4ms 2 Nov 2025 816th snoozingnewt 🇨🇦 465 188 27ms 2 Nov 2025 817th pquline 464 122 17ms 15 Mar 2025 818th balloffur 460 143 5ms 11 days ago 819th snoozingnewt 🇨🇦 459 155 154ms 2 Nov 2025 820th yoshykai 459 183 415ms 10 Apr 2025 821st HumanoidCPU 458 155 384ms 1 Feb 2025 821st dokutan 458 155 343ms 30 Mar 2025 823rd HumanoidCPU 458 220 30ms 6 Nov 2025 824th vhoulbreque 🇫🇷 457 124 16ms 16 Feb 2025 825th snoozingnewt 🇨🇦 456 158 106ms 2 Nov 2025 826th snoozingnewt 🇨🇦 453 111 851ms 2 Nov 2025 827th Mikey-Beep 🇬🇧 453 125 12ms 8 Jul 2025 828th osNiko 🇧🇷 449 126 11ms 16 Aug 2025 829th snoozingnewt 🇨🇦 448 187 1,285ms 2 Nov 2025 830th Bobini1 🇵🇱 446 127 16ms 15 Jan 2025 830th matsagad 446 127 34ms 16 Jan 2025 832nd nullshallot 444 111 308ms 5 Jan 2025 833rd emgordon154 444 124 10ms 30 Jun 2025 834th mhgockel 444 148 4ms 21 Jun 2025 835th snoozingnewt 🇨🇦 440 253 40ms 2 Nov 2025 836th driri85 439 129 11ms 7 Jan 2025 836th tjwrenn 439 129 11ms 27 Jan 2025 838th Chinay-Domitrix 🇺🇸 435 125 4,172ms 16 Apr 2025 839th iczelia 🇩🇪 435 163 5ms 21 Sep 2025 840th jtaxen 432 131 45ms 27 Jan 2025 841st JOrE20 🇺🇸 430 234 26ms 14 days ago 842nd jameswmccarty 429 132 11ms 7 Mar 2025 843rd blaztoma 🇱🇹 424 107 330ms 29 Oct 2025 844th Ailko 🇧🇪 419 135 29ms 17 Jan 2025 844th itljan30 419 135 11ms 26 Jan 2025 844th smilesformiles3 419 135 20ms 18 Jun 2025 847th dokutan 416 109 81ms 16 Apr 2025 848th non-bin 413 200 11ms 28 Jun 2025 849th MeWhenI 🇻🇦 409 103 868ms 15 Sep 2025 850th snoozingnewt 🇨🇦 409 241 43ms 2 Nov 2025 851st CaedenHarper 🇨🇦 408 235 6ms 14 Nov 2025 852nd snoozingnewt 🇨🇦 408 247 26ms 2 Nov 2025 853rd snooze92 🇫🇷 407 139 11ms 5 Mar 2025 854th brimstonetrader 405 140 18ms 6 Jan 2025 855th snoozingnewt 🇨🇦 405 247 5ms 2 Nov 2025 856th HumanoidCPU 403 125 834ms 6 Nov 2025 857th KatieLG 🇬🇧 402 85 23ms 6 Jan 2025 858th PyryL 🇫🇮 402 141 11ms 22 Jan 2025 859th KatieLG 🇬🇧 402 270 32ms 5 Jan 2025 860th madex 🇩🇪 399 142 18ms 4 Jan 2025 861st dokutan 397 157 120ms 13 Nov 2025 862nd galloj 🇨🇿 396 143 15ms 23 Jan 2025 863rd TaserTheFox 🇺🇸 391 145 12ms 22 Feb 2025 864th KatieLG 🇬🇧 389 183 144ms 27 days ago 865th KatieLG 🇬🇧 389 216 2ms 2 Oct 2025 866th vyx777 386 214 10ms 11 Jan 2025 867th gnuvince 384 55 2ms 29 Jun 2025 868th martinorav 383 148 13ms 20 Jan 2025 868th qwjhvbxi 383 148 19ms 21 Jan 2025 870th ComputerKWasTaken 🇺🇸 378 150 10ms 20 Jan 2025 871st The-Wolfson 376 242 98ms 22 Jan 2025 872nd atazzam 🇺🇸 373 152 11ms 16 Jan 2025 873rd snoozingnewt 🇨🇦 372 239 14ms 2 Nov 2025 874th Andrey2001 370 153 12ms 24 days ago 875th Zhenyu-Bo 358 158 10ms 1 Aug 2025 876th mbittner20 352 161 12ms 7 Feb 2025 877th Andrey2001 349 145 446ms 22 days ago 878th matejmatik123 🇸🇰 345 243 1,339ms 3 days ago 879th shaneliu-zf 🇹🇼 344 191 2ms 16 Apr 2025 880th WillowWispy 337 168 11ms 22 Mar 2025 First Prev 801–880 of 964 Next Last