ISBN in Ruby in chars.Cheevos Holes Recent Holes Langs Medals Misc All Holes12 Days of Christmas24 Game99 Bottles of BeerAbundant NumbersAbundant Numbers (Long)Arabic to RomanArithmetic NumbersArrowsAscending PrimesASCII TablebrainfuckCatalan NumbersCatalan’s ConstantChristmas TreesCollatzCSS ColorsCubesDay of WeekDFA SimulatorDiamondsDivisorsEmirp NumbersEmirp Numbers (Long)EmojifyEvil NumbersEvil Numbers (Long)Factorial FactorisationFarey SequenceFibonacciFizz BuzzFoo Fizz Buzz BarForsyth–Edwards NotationFractionsGame of LifeGijswijt’s SequenceHappy NumbersHappy Numbers (Long)HexdumpIntersectionInventory SequenceISBNJacobi SymbolKolakoski ConstantKolakoski SequenceLeap YearsLevenshtein DistanceLeyland Numbersln 2Look and SayLucky NumbersLucky TicketsMahjongMazeMedal TallyMorse DecoderMorse EncoderMusical ChordsN QueensNiven NumbersNiven Numbers (Long)Number SpiralOdious NumbersOdious Numbers (Long)Ordinal NumbersPangram GrepPascal’s TrianglePernicious NumbersPernicious Numbers (Long)PokerPrime NumbersPrime Numbers (Long)Proximity GridQR DecoderQuineRecamánRepeating DecimalsReverse Polish NotationRijndael S-boxRock-paper-scissors-Spock-lizardRoman to ArabicRule 110Seven SegmentSI UnitsSierpiński TriangleSmith NumbersSpelling NumbersStar Wars Opening CrawlSudokuSudoku v2Ten-pin BowlingTime DistanceTongue-twistersUnited StatesVampire NumbersVan Eck SequenceZodiac Signsγλπτφ√2𝑒 All Languages><>AssemblyAWKBashBASICBerrybrainfuckCC#C++ClojureCOBOLCoconutCrystalDDartElixirF#FactorForthFortranGoGolfScriptHaskellHexagonyJJanetJavaJavaScriptJuliaKLispLuaNimOCamlPascalPerlPHPPowerShellPrologPythonRRakuRockstarRubyRustsedSQLSwiftTclTeXVVimLWrenZig Bytes CharsScoringBytes CharsLanguageAll ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Clojure COBOL Coconut Crystal D Dart Elixir F# Factor Forth Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript Julia K Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust sed SQL Swift Tcl TeX V VimL Wren ZigHoleAll 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 brainfuck 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 Intersection Inventory Sequence ISBN Jacobi Symbol Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers Pangram Grep Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku v2 Ten-pin Bowling Time Distance Tongue-twisters United States Vampire Numbers Van Eck Sequence Zodiac Signs γ λ π τ φ √2 𝑒#GolferLangPointsCharsTime1st Lydxn 🇨🇦Ruby1,0004721 Aug 20222nd primo-ppcg 🇹🇭Ruby940504 May 20223rd sisyphus-ppcg 🇦🇺Ruby8875311 Jan 20224th JayXon 🇺🇸Ruby8555525 Feb 20225th MeWhenI 🇻🇦Ruby7975924 Aug 20225th xsot 🇸🇬Ruby7975914 Oct 20237th anter69 🇭🇺Ruby7836012 Feb 20248th SirBogman 🇺🇸Ruby7706121 May 20228th Shanethegamer 🇺🇸Ruby7706127 May 20228th canissimia 🇦🇶Ruby7706118 Jul 20228th Steffan153 🇫🇮Ruby770612 Mar 202312th ovs-code 🇩🇪Ruby746639 May 202312th nwellnhof 🇩🇪Ruby7466318 Jul 202314th GrayJoKing 🇦🇺Ruby7346410 Feb 202214th xiBread 🇺🇸Ruby734645 Dec 202216th janlelisRuby7016711 Jan 202217th akshatj27 🇦🇶Ruby6916810 Jan 202217th Natanaelel 🇸🇪Ruby6916821 Jun 202217th stefangimmillaroRuby6916819 Dec 202217th Haksell 🇦🇶Ruby6916823 Feb 202321st 4hg 🇺🇸Ruby6816930 Nov 202221st Andriamanitra 🇫🇮Ruby6816917 Apr 202323rd Waffle3zRuby6357412 Jan 202223rd olleicua 🇺🇸Ruby6357416 Feb 202425th jared-hughesRuby627759 Sep 202226th jstanley0Ruby610775 Feb 202227th aaronze 🇦🇺Ruby5888021 Sep 202328th galloj 🇨🇿Ruby566839 Sep 202229th KatieLG 🇬🇧Ruby500949 Oct 202230th adoxographyRuby4859720 Jan 202230th alexjurkiewicz 🇦🇺Ruby485977 Jul 202232nd mosegontarRuby3381396 Jul 202233rd KatieLG-Transpiler 🇬🇧Ruby2371983 Jul 202234th madex 🇩🇪Ruby1014666 Mar 20241–34 of 34