Set the clock. Every one of these puzzles is timed, to add to the difficulty...and to the fun and satisfaction of solving them. A children's version was so popular that now there's one for adults. Get ready to work out the brain, because it's a race to the finish line as the minutes tick away on these timed puzzles. Even those who have a clue to the answers will find that the time limit makes everything deliciously challenging. Take a 50/50 shot at...