From the inside jacket: Books available on the endgame are generally dry reference works, but TACTICAL CHESS ENDINGS deals with a hitherto unexplored aspect of the subject. Tactics occur most frequently in the middle-game, but often the smooth positional flow of an endgame can be interrupted by the appearance of an unexpected tactic. In practice, however, players are not alert to such possibilities and frequently miss their chances.
John Denis Martin Nunn is an English chess grandmaster, a three-time world champion in chess problem solving, a chess writer and publisher, and a mathematician. He is one of England's strongest chess players and once was in the world's top ten.