The Calendar hole will go live in approximately 13 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 480th NickTheEASDude 🇺🇸 793 106 2ms 8 Jan 2025 482nd BREMAUCY 🇫🇷 791 38 3ms 9 Jan 2025 483rd esmaycat 786 107 2ms 13 Jan 2025 484th sean-niemann 🇺🇸 785 107 500ms 29 Sep 2025 485th ShiraJoseph 🇺🇸 785 111 9ms 5 Jan 2025 486th inventshah 784 85 2ms 26 Mar 2025 486th TeodorDyakov 🇧🇬 784 85 2ms 27 Sep 2025 488th alemelis 783 60 357ms 15 Jul 2025 489th edsrzf 🇳🇿 783 110 6ms 8 Jan 2025 490th GolfingSuccess 🇬🇷 782 107 454ms 3 Jan 2025 491st DialFrost 🇸🇬 782 124 2,928ms 12 Jan 2025 492nd Yax42 🇫🇷 780 91 427ms 6 Jan 2025 493rd edsrzf 🇳🇿 778 100 97ms 25 Aug 2025 494th zakariamouhid 778 112 9ms 8 Jan 2025 494th gnlow 🇰🇷 778 112 9ms 11 Feb 2025 496th rucin93 🇵🇱 777 83 128ms 6 Jan 2025 497th MeWhenI 🇻🇦 776 129 5ms 6 Jan 2025 498th KatieLG 🇬🇧 775 71 410ms 7 Jan 2025 499th roguh 🇬🇹 775 84 25ms 9 Jul 2025 500th Mukundan314 775 86 2ms 28 Apr 2025 501st tailorspy 775 108 430ms 10 Jan 2025 502nd KasperKivimaeki 🇫🇮 773 22 14ms 15 Aug 2025 503rd SirBogman 🇺🇸 772 108 1,343ms 23 Jan 2025 504th CaedenHarper 🇨🇦 772 113 9ms 31 Aug 2025 505th KatieLG 🇬🇧 771 39 2ms 7 Jan 2025 506th MeWhenI 🇻🇦 771 92 392ms 6 Jan 2025 506th DialFrost 🇸🇬 771 92 3ms 25 Aug 2025 508th ejini6969 769 43 40ms 14 Jun 2025 509th tatzyr 🇯🇵 769 191 15ms 6 Apr 2025 510th ovs-code 🇩🇪 767 86 73ms 5 Jan 2025 510th edsrzf 🇳🇿 767 86 70ms 12 Jul 2025 512th annaproxy 767 116 24ms 29 Aug 2025 513th Shanethegamer 🇺🇸 766 94 107ms 6 Jan 2025 514th Yax42 🇫🇷 765 114 11ms 13 Nov 2025 515th error256 765 133 150ms 3 May 2025 516th namelessiw 764 110 445ms 3 Oct 2025 516th MeWhenI 🇻🇦 764 110 582ms 7 Nov 2025 518th error256 763 66 1,016ms 7 Jan 2025 519th AdrienHache 🇫🇷 763 93 403ms 6 Jan 2025 520th stefangimmillaro 759 45 18ms 6 Jan 2025 521st edsrzf 🇳🇿 756 28 77ms 2 Nov 2025 522nd CLOStrophobic 🇮🇹 756 158 41ms 13 Feb 2025 523rd MostParsingVex 754 111 494ms 7 Jan 2025 524th UnderKoen 🇳🇱 753 144 12ms 21 May 2025 525th snoozingnewt 🇨🇦 752 40 2ms 2 Nov 2025 526th smclaughlin-cf 752 116 9ms 21 Feb 2025 527th GolfingSuccess 🇬🇷 750 272 1,514ms 11 Feb 2025 528th duckyluuk 🇳🇱 749 108 38ms 4 Jan 2025 529th rucin93 🇵🇱 748 89 2ms 2 Jan 2025 529th Alex-x90 🇺🇸 748 89 4ms 4 Jan 2025 531st Cube14yt 745 117 9ms 13 Nov 2025 532nd Vexxter9 🇳🇱 744 113 2ms 14 Jan 2025 533rd error256 743 113 530ms 24 Sep 2025 534th stefangimmillaro 741 105 102ms 3 Jan 2025 535th qwertyuiop3 🇷🇺 741 113 512ms 15 May 2025 536th anter69 🇭🇺 740 68 1,003ms 13 Mar 2025 537th kkoenig 740 147 269ms 7 Sep 2025 538th MarcMush 🇫🇷 734 64 442ms 29 Jan 2025 539th snoozingnewt 🇨🇦 734 124 105ms 20 Nov 2025 540th XenThe 🇬🇧 733 119 9ms 23 days ago 541st qwertyuiop3 🇷🇺 732 91 1ms 15 May 2025 542nd rucin93 🇵🇱 731 88 108ms 18 Feb 2025 543rd Salutations45 731 97 10ms 6 Jan 2025 544th emgordon154 730 29 131ms 11 Sep 2025 545th SirBogman 🇺🇸 730 49 33ms 9 Jan 2025 546th SirBogman 🇺🇸 728 115 60ms 16 Jan 2025 547th edsrzf 🇳🇿 727 99 96ms 13 Jun 2025 548th JOrE20 🇺🇸 727 120 9ms 7 Nov 2025 549th sean-niemann 🇺🇸 726 98 442ms 24 Jan 2025 550th Kacarott 🇦🇺 725 91 72ms 6 Jan 2025 551st MostParsingVex 724 92 4ms 7 Jan 2025 551st Lv0Sys 🇵🇱 724 92 4ms 8 days ago 553rd Shanethegamer 🇺🇸 723 98 3ms 6 Jan 2025 554th CarsonChr 🇺🇸 721 121 9ms 5 Jan 2025 554th didion0 🇺🇸 721 121 9ms 24 Feb 2025 554th SebassNoob 721 121 9ms 8 Aug 2025 557th frankgraziano 721 128 6ms 23 Aug 2025 558th j2e2 🇪🇸 716 103 4ms 6 Feb 2025 559th iliazeus 715 122 9ms 23 days ago 560th CLOStrophobic 🇮🇹 715 144 136ms 28 May 2025 First Prev 481–560 of 970 Next Last