The Calendar hole will go live in approximately 5 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 801st JRaspass 🇬🇧 486 224 264ms 5 Jan 2025 802nd Jaydosu 484 117 11ms 16 Apr 2025 802nd calebaitken 484 117 11ms 16 Apr 2025 802nd adoxography 484 117 10ms 31 Aug 2025 805th gjoacorp 🇬🇧 481 174 438ms 4 Aug 2025 805th dokutan 481 174 64ms 13 Nov 2025 807th madeforlosers 478 173 10ms 14 Jan 2025 808th HumanoidCPU 476 138 2ms 25 May 2025 809th snoozingnewt 🇨🇦 476 192 9ms 2 Nov 2025 810th amazingalek 474 150 400ms 4 days ago 811th dokutan 473 139 5ms 13 Nov 2025 812th yokasuretsu 472 120 11ms 12 Jul 2025 812th Bmrl7 472 120 17ms 23 Nov 2025 814th HumanoidCPU 472 179 347ms 2 Feb 2025 815th snoozingnewt 🇨🇦 471 196 32ms 2 Nov 2025 816th Pale-Vessel 471 216 190ms 23 Sep 2025 817th emgordon154 469 140 6ms 5 days ago 818th snoozingnewt 🇨🇦 466 141 4ms 2 Nov 2025 819th snoozingnewt 🇨🇦 465 188 27ms 2 Nov 2025 820th pquline 464 122 17ms 15 Mar 2025 821st balloffur 460 143 5ms 18 days ago 822nd snoozingnewt 🇨🇦 459 155 154ms 2 Nov 2025 823rd yoshykai 459 183 415ms 10 Apr 2025 824th HumanoidCPU 458 155 384ms 1 Feb 2025 824th dokutan 458 155 343ms 30 Mar 2025 826th HumanoidCPU 458 220 30ms 6 Nov 2025 827th vhoulbreque 🇫🇷 457 124 16ms 16 Feb 2025 828th snoozingnewt 🇨🇦 456 158 106ms 2 Nov 2025 829th snoozingnewt 🇨🇦 453 111 851ms 2 Nov 2025 830th Mikey-Beep 🇬🇧 453 125 12ms 8 Jul 2025 831st osNiko 🇧🇷 449 126 11ms 16 Aug 2025 832nd snoozingnewt 🇨🇦 448 187 1,048ms 2 Nov 2025 833rd Bobini1 🇵🇱 446 127 16ms 15 Jan 2025 833rd matsagad 446 127 34ms 16 Jan 2025 835th nullshallot 444 111 308ms 5 Jan 2025 836th emgordon154 444 124 10ms 30 Jun 2025 837th mhgockel 444 148 4ms 21 Jun 2025 838th driri85 439 129 11ms 7 Jan 2025 838th tjwrenn 439 129 11ms 27 Jan 2025 840th snoozingnewt 🇨🇦 437 253 40ms 2 Nov 2025 841st Chinay-Domitrix 🇺🇸 435 125 3,261ms 16 Apr 2025 842nd iczelia 🇩🇪 435 163 5ms 21 Sep 2025 843rd jtaxen 432 131 45ms 27 Jan 2025 844th JOrE20 🇺🇸 430 234 26ms 21 days ago 845th jameswmccarty 429 132 11ms 7 Mar 2025 846th blaztoma 🇱🇹 424 107 269ms 29 Oct 2025 847th Ailko 🇧🇪 419 135 29ms 17 Jan 2025 847th itljan30 419 135 11ms 26 Jan 2025 847th smilesformiles3 419 135 20ms 18 Jun 2025 850th dokutan 416 109 81ms 16 Apr 2025 851st non-bin 413 200 11ms 28 Jun 2025 852nd MeWhenI 🇻🇦 409 103 868ms 15 Sep 2025 853rd snoozingnewt 🇨🇦 409 241 43ms 2 Nov 2025 854th CaedenHarper 🇨🇦 408 235 6ms 14 Nov 2025 855th snoozingnewt 🇨🇦 408 247 26ms 2 Nov 2025 856th snooze92 🇫🇷 407 139 11ms 5 Mar 2025 857th brimstonetrader 405 140 18ms 6 Jan 2025 858th snoozingnewt 🇨🇦 405 247 5ms 2 Nov 2025 859th HumanoidCPU 403 125 834ms 6 Nov 2025 860th KatieLG 🇬🇧 402 85 23ms 6 Jan 2025 861st PyryL 🇫🇮 402 141 11ms 22 Jan 2025 862nd KatieLG 🇬🇧 402 270 32ms 5 Jan 2025 863rd madex 🇩🇪 399 142 18ms 4 Jan 2025 864th dokutan 397 157 120ms 13 Nov 2025 865th galloj 🇨🇿 396 143 15ms 23 Jan 2025 866th TaserTheFox 🇺🇸 391 145 12ms 22 Feb 2025 867th KatieLG 🇬🇧 389 183 144ms 21 Nov 2025 868th KatieLG 🇬🇧 389 216 2ms 2 Oct 2025 869th vyx777 386 214 10ms 11 Jan 2025 870th gnuvince 384 55 2ms 29 Jun 2025 871st martinorav 383 148 13ms 20 Jan 2025 871st qwjhvbxi 383 148 19ms 21 Jan 2025 873rd ComputerKWasTaken 🇺🇸 378 150 10ms 20 Jan 2025 874th The-Wolfson 376 242 98ms 22 Jan 2025 875th atazzam 🇺🇸 373 152 11ms 16 Jan 2025 876th snoozingnewt 🇨🇦 372 239 14ms 2 Nov 2025 877th Andrey2001 370 153 12ms 24 Nov 2025 878th Zhenyu-Bo 358 158 10ms 1 Aug 2025 879th mbittner20 352 161 12ms 7 Feb 2025 880th Andrey2001 349 145 446ms 26 Nov 2025 First Prev 801–880 of 967 Next Last