Your Kingdom for My Horse

Knowing when and what to exchange in chess--trading chessmen in a series of closely related moves, typically sequential--is an essential skill. This book, written by the hugely popular chess writer Andrew Soltis, is the only one that will help you up your game. He explains if you should exchange your bishop for a knight, which pair of bishops to exchange, when it's important to keep rooks on the board, and when to refuse any trade.