I have used this book for practically anything with regards to that wonderful game called Chess: skittles, replays of famous games, chess opening repertoire (though dated), preparation for tournaments, and merely to amuse myself on a dull stretch of time. This book has actually improved my games. It is a very instructive compendium of master games, annotated by a GM himself. It contains the immortal games of the master, pre-1940. Like Anderssen's Evergreen game, Lasker's beautiful 2-Bishop sac against Bird, or Nimzovitch's immortal Zugzwang, or the highly exhilirating period pieces by Alekhine. Man, this is like Chess's Greatest Hits before the 40s. Though, it could be a bit ancient for those above master strength, it is a thoroughly enjoyable book, wherein one can pick a strategy or two. This book is arranged by openings, and does always try to include very tactical games, solid positional gems and with some delicious chess trivia minutiae. With all its masterful annotations, this book, at this price, is a steal. I wish some GM could come up with a book like this, with the games from 60s to the 90s. A must own, believe me...