World Champions at their Best (2) - The Lasker Years, by IM Jeremy Silman.
Jeremy continues his historical trek, moving on to the games of the man whose reign as World Champion lasted longer than any other -- an amazing 27 years. Emanuel Lasker was a polymath, in addition to his chess, he was an accomplished mathematician and philosopher who was also a personal friend of Albert Einstein. Lasker believed that chess was a struggle, and was probably the first champion to take a psychological approach to chess. His games reflect this attitude as he was willing to take tremendous risks, and even intentionally make inferior moves, in order to create uncomfortable positions for his opponents. 50 Challenges with historical background of each player and match.