Packed with more than a hundred color illustrations and a wide variety of puzzles and brainteasers, Taking Sudoku Seriously uses this popular craze as the start

A lively and engaging look at logic puzzles and their role in mathematics, philosophy, and recreation Logic puzzles were first introduced to the public by Lewis

"Born the child of a poor farmer in Missouri, William Stoner is urged by his parents to study new agriculture techniques at the state university. Digging instea

200 New Difficult Puzzles -- They Are Not Going to Be Easy But You Are Ready Su Doku, "the crossword without words," comes with a warning: it is seriously addic

Puzzlesmiths of all skill levels will find original logic puzzles that will flex the brain, challenge assumptions, and entertain for hours. In addition to offer