This book contains everything you need to know to play the exciting Dilworth Variation of the Ruy Lopez from either side, though it does examine most material from Black’s point of view. What sets this monograph apart from most opening books is the thorough examination of the typical endgames which arise. Many opening books simply end a variation with a symbol indicating an advantage for one side or another, or worse yet, the omnipresent “unclear”. The Dilworth defies such a treatment, because the endgames are so complicated that only a great deal of experience can lead to correct evaluation of the positions. So almost all of the games cited in this book are presented in full.