Mega Hard Crossword Puzzles Large Print Edition (with 70 puzzles to do!)Paperback, 1 December 2017

If you're going to solve the puzzles in this book, then you better be prepared to face certain difficulties. The puzzles are hard to solve because they require a lot more thinking and planning. It is recommended that you solve the clues that you know first before moving on to the ones new to you. This way, the solved clues would add up to aid you. Good luck!