CREATE TABLE table_67040 ("Year" FLOAT, "Chassis" TEXT, "Engine ( s ) " TEXT, "Tyres" TEXT, "Points" TEXT)

What tyres have 1 point and an ensign n177 chassis?
SELECT "Tyres" FROM table_67040 WHERE "Points" = '1' AND "Chassis" = 'ensign n177'
SELECT "Tyres" FROM "table_67040" WHERE "Chassis" = 'ensign n177' AND "Points" = '1'