CREATE TABLE table_name_15 (tyres VARCHAR2, points VARCHAR2, chassis VARCHAR2)

What tyres have 1 point and an ensign n177 chassis?
SELECT tyres FROM table_name_15 WHERE points = "1" AND chassis = "ensign n177"
SELECT "tyres" FROM "table_name_15" WHERE "1" = "points" AND "chassis" = "ensign n177"