Complex sentence: Nezhmetdinov won a number of games against world champions such as Tal, against whom he had a lifetime plus score, and Spassky, and also had success against other world-class grandmasters such as Bronstein, Polugaevsky, and Geller.
Split into simpler sentences: Nezhmetdinov won a number of games against world champions such as Tal, against whom he had a lifetime plus score, and Spassky. He also had success against other world-class grandmasters such as Bronstein, Polugaevsky, and Geller.