Think outside the box! Knot or Not, Petunia's Pickle, Mole City and the Mad Maze of Dr. M Beginning with the cover game of Put a Spin on It--an ingenious test of thinking about connections--here are 19 fascinating puzzles that flex the mind. Take the network challenge and tackle the bridges of K?nigsberg. Arrange a perfect seating plan for a party of friends and strangers. Navigate the cave maze, and use a chess board to attempt the three-hundred-year-old...