"...Made my head hurt! -- Isaac Newton...Doesn't bug me! -- Grace Hopper...Rang my chimes! -- Alexander Graham BellThese innovative, witty, and utterly outrageous brainbusters engage reasoning power while honing problem-solving skills. Beginning with easier puzzles, then getting progressively harder, this tantalizing collection will increase brain power with each puzzle conquered. Also included is a special Solutions section that gives a detailed answer to each brainbuster."