TRICK 2.--To many players a trump lead at this trick would
seem imperative, but if trumps are led, the adversaries obtain the
lead and must make three tricks in the club suit. The clubs must be
discarded before the adversaries obtain the lead. The king of spades
should be led, otherwise the spade suit would be blocked.
TRICK 4.--It seems like tempting fate for Z to lead his high
cards, but nothing can possibly be lost. The discards which Y takes
on these high cards offset any trump that the adversary might make.
There is everything to gain and nothing to lose.