The Calendar hole will go live in approximately 4 days. Why not try and solve it ahead of time?
ROT13 in all languages in bytes. 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 Bytes Time Submitted 801st JDiLenarda 🇫🇷 508 164 1,354ms 17 Jun 2025 802nd JOrE20 🇺🇸 507 127 101ms 23 days ago 803rd Siri-chan 506 201 169ms 8 Jan 2025 804th tjwrenn 505 129 11ms 27 Jan 2025 805th frankgraziano 505 210 40ms 16 May 2025 806th madeforlosers 504 173 10ms 14 Jan 2025 807th Shanethegamer 🇺🇸 503 141 51ms 2 Jan 2025 808th alaaeelsayed 503 167 379ms 15 Jan 2025 809th balloffur 501 167 403ms 20 days ago 810th aditsu 499 109 3,282ms 27 days ago 811th jtaxen 497 131 45ms 27 Jan 2025 812th Kacarott 🇦🇺 497 193 7ms 26 Apr 2025 813th jameswmccarty 493 132 11ms 7 Mar 2025 814th HumanoidCPU 490 171 63ms 17 Jan 2025 815th DanielSchmerber 488 172 395ms 9 Jan 2025 816th snoozingnewt 🇨🇦 487 177 8ms 2 Nov 2025 817th nils-imhoff 487 253 1,647ms 27 Jun 2025 818th JRaspass 🇬🇧 486 224 264ms 5 Jan 2025 819th HumanoidCPU 483 138 2ms 25 May 2025 820th Ailko 🇧🇪 482 135 29ms 17 Jan 2025 820th itljan30 482 135 11ms 26 Jan 2025 820th smilesformiles3 482 135 20ms 18 Jun 2025 823rd gjoacorp 🇬🇧 481 174 438ms 4 Aug 2025 823rd dokutan 481 174 64ms 13 Nov 2025 825th snoozingnewt 🇨🇦 480 192 9ms 2 Nov 2025 826th dokutan 479 139 5ms 13 Nov 2025 827th emgordon154 476 140 6ms 7 days ago 828th amazingalek 474 150 400ms 6 days ago 829th snoozingnewt 🇨🇦 472 141 4ms 2 Nov 2025 830th HumanoidCPU 472 179 347ms 2 Feb 2025 831st snoozingnewt 🇨🇦 471 196 32ms 2 Nov 2025 832nd Pale-Vessel 471 216 190ms 23 Sep 2025 833rd JunkIce 470 117 832ms 17 Jan 2025 834th snooze92 🇫🇷 469 139 11ms 5 Mar 2025 835th snoozingnewt 🇨🇦 469 253 40ms 2 Nov 2025 836th balloffur 466 143 5ms 20 days ago 837th brimstonetrader 465 140 18ms 6 Jan 2025 838th snoozingnewt 🇨🇦 465 188 27ms 2 Nov 2025 839th PyryL 🇫🇮 462 141 11ms 22 Jan 2025 840th madex 🇩🇪 459 142 18ms 4 Jan 2025 841st snoozingnewt 🇨🇦 459 155 154ms 2 Nov 2025 842nd yoshykai 459 183 415ms 10 Apr 2025 843rd HumanoidCPU 458 155 384ms 1 Feb 2025 843rd dokutan 458 155 343ms 30 Mar 2025 845th HumanoidCPU 458 220 30ms 6 Nov 2025 846th snoozingnewt 🇨🇦 456 158 106ms 2 Nov 2025 847th galloj 🇨🇿 455 143 15ms 23 Jan 2025 848th snoozingnewt 🇨🇦 453 111 851ms 2 Nov 2025 849th CheeseCake628 🇳🇴 452 144 11ms 19 May 2025 850th mhgockel 450 148 4ms 21 Jun 2025 851st TaserTheFox 🇺🇸 449 145 12ms 22 Feb 2025 852nd snoozingnewt 🇨🇦 448 187 1,048ms 2 Nov 2025 853rd osNiko 🇧🇷 444 81 59ms 5 days ago 854th nullshallot 444 111 308ms 5 Jan 2025 855th emgordon154 444 124 10ms 30 Jun 2025 856th martinorav 440 148 13ms 20 Jan 2025 856th qwjhvbxi 440 148 19ms 21 Jan 2025 858th blaztoma 🇱🇹 439 107 269ms 29 Oct 2025 859th Chinay-Domitrix 🇺🇸 435 125 3,261ms 16 Apr 2025 860th iczelia 🇩🇪 435 163 5ms 21 Sep 2025 861st ComputerKWasTaken 🇺🇸 434 150 10ms 20 Jan 2025 862nd JOrE20 🇺🇸 430 234 26ms 23 days ago 863rd atazzam 🇺🇸 428 152 11ms 16 Jan 2025 864th Andrey2001 426 153 12ms 24 Nov 2025 865th Zhenyu-Bo 412 158 10ms 1 Aug 2025 866th MeWhenI 🇻🇦 409 103 868ms 15 Sep 2025 867th snoozingnewt 🇨🇦 409 241 43ms 2 Nov 2025 868th CheeseCake628 🇳🇴 408 135 409ms 18 Oct 2025 869th CaedenHarper 🇨🇦 408 235 6ms 14 Nov 2025 870th snoozingnewt 🇨🇦 408 247 26ms 2 Nov 2025 871st vyx777 407 214 10ms 11 Jan 2025 871st non-bin 407 214 10ms 28 Jun 2025 873rd mbittner20 405 161 12ms 7 Feb 2025 874th snoozingnewt 🇨🇦 405 247 5ms 2 Nov 2025 875th HumanoidCPU 403 125 834ms 6 Nov 2025 876th KatieLG 🇬🇧 402 85 23ms 6 Jan 2025 877th KatieLG 🇬🇧 402 270 32ms 5 Jan 2025 878th dokutan 397 157 120ms 13 Nov 2025 879th KatieLG 🇬🇧 389 183 144ms 21 Nov 2025 880th KatieLG 🇬🇧 389 216 2ms 2 Oct 2025 First Prev 801–880 of 975 Next Last