The purpose of this book is to provide you with the 300 positions essential to becoming a strong tournament player. You want an approach to learning that gives yout he maximum results in the minimum amount of time. The major portion of all practical chess knowledge is represented in this little book of 188 pages. And yes, this is a pocket book - a 'vade mecum' - meant to be carried with you in many contexts. It can be productively studied in almost any situation. Even a few minutes with a single position often pay dividends, and revisiting the same position frequently will make sue it become a part of your "active" playing knowledge.