Sudoku is a name for a type of number-based puzzle. Solving a Sudoku puzzle requires logic that will improve your brain power and reasoning skills. Sudoku puzzles originated in Japan. The Japanese language does inot lend itself to crossword puzzles because thelanguage uses complex characters to form words rather than an alphabet. Su means "number" in Japanese language. Doku means "bachelor" or "single". Sudoku can be translated loosely as "single number". Now Sudoku puzzles are creating a worldwide phenomenon. This book includs solutions of the puzzles in the end.