Sacking the Citadel: The History, Theory and Practice of the Classic Bishop Sacrifice - Jon EdwardsSacking the Citadel: The History, Theory and Practice of the Classic Bishop Sacrifice Jon Edwards Paperback, 400 pages Four hundred years ago, an Italian chess master, Gioachino Greco, discovered an extraordinary bishop sacrifice on h7 that often leads to checkmate or a significant material advantage. More amazing still, he recorded the idea! This book chronicles the history of that idea, what many have come to call the Classic Bishop sacrifice, from