The Middle Game in Chess by Euwe
Euwe, Max / Kramer, Haije / Cozens, W. H. In chess, the middle game presents the writer as well as the player with the most formidable problems. Its theory is particularly difficult to formulate with the result that it has, as Dr. Euwe explains, received inadequate treatment in chess literature. Indeed, this work was first conceived during the Second World War and has required many years of intensive study by the former World Champion and his collaborator, Mr. H. Kramer, the Dutch int...