<DIV><P style="MARGIN: 0in 0in 0pt">In chess, sacrificing material is the most dramatic way to try to seize the advantage. Most sacrifices have a forcing aim in mind, but most profound of all are positional sacrifices where the end is impossible to foresee and thus fine judgment, understanding and intuition are required. Such sacrifices are usually a mystery to average players, but acclaimed author and grandmaster Mihai Suba explains the secrets of this technique in entertaining fashion.</DIV>