SELECT chassis FROM table_name_55 WHERE engine = "maserati straight-6" AND entrant = "officine alfieri maserati" AND points < 6
Apa sasis Officine Alfieri Maserati dengan mesin Maserati Straight-6 dan kurang dari 6 poin?
CREATE TABLE table_name_55 (chassis VARCHAR, points VARCHAR, engine VARCHAR, entrant VARCHAR)