Szabo vs L Evans, 1950 (E56) Nimzo-Indian, 4.e3, Main line with 7...Nc6, 53 moves, 1-0 petrosian way of play Szabo vs Petrosian, 1968  (E56) Nimzo-Indian, 4.e3, Main line with 7...Nc6, 36 moves, 0-1 2 games