When you're looking for a challenging yet highly effective way of improving your problem solving skills, go for a book of crossword puzzles. Crossword puzzles are loaded with clues that will lead you to the right answers. However, you are limited in choice of answers because one block affects everything else. How will you proceed? Your problem solving skills are needed!
![Super Cool Crosswords: Crossword Puzzle A Day [Paperback]](/itemImage/2/6/6/5/2_5033267.jpg "Super Cool Crosswords: Crossword Puzzle A Day [Paperback]")