Stretch your brain with puzzles from Mensa, every day of the year. Test your mental mettle every day with a word puzzle, number problem, logic challenge, or other cranial conundrum that's so tough, it's sanctioned by Mensa, the internationally famous high IQ society. This is puzzle solving taken to the extreme. Deduce the secret codes in Spymaster. Fill in the Pangrams. Locate the hidden Treasures. Plus tricky twists on Sudoku, next level word searches, and games like Percent Puzzler: A number is increased by 20% and then the resulting number is decreased by 20%. The result is 10 less than the original number. What was the original number? (250.) Stumped? No worries answers are on the reverse of each page. Printed on responsibly sourced paper and 100% recyclable.