This is a book on basic chess strategy written by Dr. Max Euwe while he was World Chess Champion. Unlike so many subsequent books by Euwe, there is no co-author to this book. Euwe himself wrote this one. The topics covered are: I. Strategy and Tactics. II. Strategy: General principles. - The greatest possible field of action for the pieces. - As much choice as possible of intervening III. Strategy: Special principles. - Taking the initiative where one is strongest. - Directing the attack in general on fixed pawns. IV. Tactics: Combinations in General. - Mating combinations. - Open-field combinations.