West led the heart ace, and for want of anything better continued with the king.
He was given some help when West led the club ace.
Looking at the four hands it is easy to see that West should lead the heart ace.
West led the heart ace and continued with the queen.
West led the diamond ace and continued with the jack.
He received some help when West led the diamond ace and continued with the six.
West led the heart ace and gave South some help by shifting to the club nine.
If West simply led the diamond ace he could escape for down two.
Since the opening club lead was sure to run into at least one void, West should certainly have led the heart ace.
But West led the diamond ace followed by the queen.