Sam Loyd's mathematical puzzles are legendary: In his unique style, he manages to wrap the trickiest puzzles into imaginative stories. Together with the charm of the original illustrations, the toughest nuts become a delight. Following the great success of 'Mathematical Puzzles and Games', new brain teasers are now available for clever minds and those who aspire to be. A challenge for intellect and imagination - and if necessary, the solution section provides assistance.