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 641st GolfingSuccess 🇬🇷 646 118 28ms 2 Jan 2025 641st edsrzf 🇳🇿 646 118 10ms 25 Aug 2025 643rd tayloia 🇬🇧 646 135 10ms 12 Jan 2025 644th SirBogman 🇺🇸 645 277 58ms 21 Jan 2025 645th Shanethegamer 🇺🇸 642 97 260ms 24 May 2025 646th MeWhenI 🇻🇦 641 33 66ms 6 Jan 2025 647th KrausRaus 🇺🇸 641 136 10ms 3 Jan 2025 648th DialFrost 🇸🇬 639 101 137ms 3 Jan 2025 649th ZakkkkAttackkkk 🇵🇭 639 102 17ms 6 Jan 2025 650th HumanoidCPU 636 132 422ms 8 Nov 2025 651st Protothor 636 137 10ms 11 Jun 2025 652nd dokutan 635 120 2ms 5 Feb 2025 653rd MostParsingVex 633 159 25ms 6 Jan 2025 654th DialFrost 🇸🇬 632 87 7ms 11 Jan 2025 655th OllieBoyne 🇬🇧 632 103 10ms 9 Jan 2025 656th The3gs 632 161 173ms 25 Jan 2025 657th MeWhenI 🇻🇦 629 80 1,062ms 6 Jan 2025 658th HahUK 629 173 262ms 10 Nov 2025 659th BREMAUCY 🇫🇷 629 284 14ms 6 Aug 2025 660th kirjavascript 628 162 168ms 18 Mar 2025 661st CaedenHarper 🇨🇦 627 134 562ms 7 Oct 2025 661st kmathis22 627 134 503ms 31 Oct 2025 663rd ikskuh 627 139 10ms 27 Jun 2025 663rd alexsave 627 139 10ms 7 Oct 2025 665th Shanethegamer 🇺🇸 624 114 428ms 6 Jan 2025 666th Shanethegamer 🇺🇸 624 138 7ms 5 Jan 2025 667th grey0ut 623 79 287ms 9 Jan 2025 668th MostParsingVex 623 100 141ms 7 Jan 2025 669th szymex73 🇵🇱 623 107 2ms 17 Jan 2025 669th Efgeen 🇸🇪 623 107 4ms 17 Nov 2025 671st KasperKivimaeki 🇫🇮 623 114 367ms 5 Jan 2025 672nd two-bad 🇬🇧 623 140 9ms 22 Feb 2025 673rd DialFrost 🇸🇬 622 135 448ms 24 Sep 2025 674th prestosilver 🇺🇸 621 136 340ms 9 days ago 675th Mabeloid 🇳🇴 620 105 10ms 7 Jan 2025 676th Mandrzejy 🇵🇱 620 135 422ms 5 Jan 2025 677th the-zammers 619 167 152ms 2 Feb 2025 678th jerrandolph 618 176 270ms 23 Sep 2025 679th firewoods1978 617 108 1ms 9 Jan 2025 679th Maashau 617 108 5ms 29 Nov 2025 681st pardouin 🇫🇷 613 161 90ms 25 Apr 2025 682nd dokutan 611 151 3ms 29 Apr 2025 683rd HaxSam 610 143 9ms 27 Jun 2025 684th jared-hughes 609 107 15ms 7 Jan 2025 685th edsrzf 🇳🇿 609 178 339ms 2 Mar 2025 686th tatzyr 🇯🇵 608 81 232ms 5 Mar 2025 687th bac0id 607 138 426ms 10 Jan 2025 688th Herbert00709 🇵🇱 606 110 5ms 5 Jan 2025 689th Jacob385 604 139 435ms 28 Oct 2025 690th emgordon154 603 143 34ms 3 Jan 2025 691st MostParsingVex 603 153 15ms 5 Jan 2025 692nd dokutan 603 166 3ms 4 Feb 2025 693rd arcpolaris 602 118 410ms 10 Jan 2025 693rd snoozingnewt 🇨🇦 602 118 410ms 2 Nov 2025 695th juliansiebert 🇩🇪 601 82 307ms 1 Mar 2025 696th aksyristos 601 145 9ms 11 Jan 2025 697th snoozingnewt 🇨🇦 601 181 286ms 2 Nov 2025 698th c0d3-4-F00d 🇩🇪 600 111 2ms 9 Jan 2025 698th wansacis 🇩🇪 600 111 2ms 30 Jan 2025 698th prestosilver 🇺🇸 600 111 2ms 18 Nov 2025 701st denballakh 598 109 14ms 13 Jan 2025 702nd luuumine 🇫🇷 598 140 63ms 19 days ago 703rd Shanethegamer 🇺🇸 597 108 137ms 8 Jan 2025 703rd pardouin 🇫🇷 597 108 134ms 29 Jul 2025 705th madex 🇩🇪 595 112 2ms 4 Jan 2025 705th Mandrzejy 🇵🇱 595 112 1ms 5 Jan 2025 707th dbut2 🇦🇺 595 183 275ms 14 Jan 2025 708th Maximizer02 594 145 9ms 10 Jan 2025 709th xyangst 593 147 10ms 14 Feb 2025 710th sean-niemann 🇺🇸 592 109 175ms 22 Oct 2025 711th FlorianCassayre 🇫🇷 592 110 11ms 14 Jan 2025 711th wobblybits 592 110 15ms 19 Aug 2025 713th msbranicky 592 169 5ms 1 Jun 2025 714th Yewzir 🇧🇪 592 208 2,667ms 14 Nov 2025 715th emgordon154 591 120 7ms 12 Jan 2025 716th rbobillot 591 345 424ms 13 Jan 2025 717th Jay2k1 590 63 5ms 6 Nov 2025 718th Yewzir 🇧🇪 590 142 423ms 6 Jan 2025 719th iczelia 🇩🇪 589 61 51ms 21 Sep 2025 720th ikskuh 589 209 1,658ms 27 Jun 2025 First Prev 641–720 of 975 Next Last