The popular sudoku puzzle to print now comes in many formats, from the old pen and paper and board games to some great free Sudoku PC games which are available online as downloads. Whilst purists may prefer the old paper version, I really enjoy the electronic versions because they incorporate all the benefits and fun of the classic puzzle but with more visual compelling features and some amazing graphical representations.This past year a combination of five Sudoku puzzle books combined to out sell one of the big best selling books in the book marketplace. Almost every daily newspaper now ...