Challenge yourself at home with word and number puzzles 50 classic Mephisto crosswords for a tough but fair mental challenge. The Mephisto crossword appears weekly in The Sunday Times and is one of the greatest challenges for cryptic crossword enthusiasts - for the crossword grid has no black squares in it. This collecton of Mephisto crosswords contains 50 of the most interesting and challenging crosswords and provides much challenging entertainment to cryptic crossword aficionados.