Peter Winkler - Mathematical Puzzles: A Connoisseur's Collection

Book Description
This collection includes more than 100 of the best (and some of the toughest)mathematical puzzles ever to appear in one volume.

You'll need a love for mathematical reasoning and a streak of determination. You won't need a professional acquaintance with mathematics; a motivated high school student has what it takes! If you're up to the challenge, there's even a chapter on Unsolved Puzzles.

"This is certainly the best collection of challenging mathematical puzzles that has appeared in the last decade." - Ronald Graham, President, Mathematical Association of America