The godfather of sudoku has hundreds more in the pipeline
                                
                                
                                    (Newser) -
                                    Nikoli, the Japanese publisher that turned sudoku into a blockbuster, has about 250 more where that came from, most of them unknown outside Japan. Founded by a college dropout with a horseracing habit, the company doesn't invent puzzles, it relies on its readership to submit ideas, as well as help...