It would be helpful to know what leads they play.
There is a chance of an elimination if RHO has
♠Kx and
♦Ax, or any hand with a singleton ace of diamonds. Win
♥K and play
♠A.
If trumps break but the king doesn't fall, play a heart to the queen, ruff a club, and play
♥A. If they don't break, ruff the last heart in hand and exit with a spade. That works when RHO is something like 2227 - the best he can do is exit with a low diamond, but we cross in trumps and lead a diamond to dummy's remaining honour.
If spades are 0=3, play a second spade, win the return, draw the last trump, ruff a club, and cash the top hearts ending in hand. Then play a diamond. That works when RHO is 1=2, 2=1 or 2=2 in the red suits. Note that we can't afford to ruff the fourth heart immediately, because we will run out of trumps and go down when
♦A is onside.
I can't see a way to cater for East's 3415, but it seems unlikely on the bidding anyway.
Edit: This fails when their shapes are 2164=1516 - LHO ruffs the second heart and plays a diamond to the king and ace, then RHO exits with a club. Against that layout, I have to win the first heart in hand and ruff a club immediately. Maybe I should ask about their leads and defence to 1
♣.
This post has been edited by gnasher: 2013-January-19, 04:19