Squeezing the Gambits: the Benko, Budapest, Albin and Blumenfeld • by Kiril Georgiev (2010)

This is an outstanding opening book and it could also be viewed as a case study based textbook on strategy and positional play. It is written for the player who opens with 1.d4 and who wants a principled and practical way of meeting four gambits: the Benko, the Budapest Defence, the Albin and the Blumenfeld.