Difficult Crossword Puzzles For Brain Tickling

5 Benefits Of Doing A Difficult Crossword Puzzle 1. You can fight boredom with this mind stimulating activity. 2. Your hand-eye coordination will stay sharp by filling in the grid. 3. Your reasoning and problem solving abilities will increase. 4. Your vocabulary will increase and your spelling will improve. 5. You will learn information about historical facts and people.