303 Tactical Chess Puzzles - Mensa Author:Fred Wilson, Bruce Alberston It's the mental gymnasium where you can do a winning chess workout! Based on the authors' belief that the only way to improve is to study tactics, each intriguing example hones your skills so you can move up to the next level. Organized into beginners, Intermediate, and Tournament levels of play, each gets 100 puzzles, with additional material ... more »on defense and defeating computer chess machines.« less