What are the best chances to make this tight game ?
I suggested a dummy reversal/crossruff, trying to score A of clubs and 3 club ruffs in hand, 3H + A of spades and 2 diamond ruffs, but not sure about this.
This should work with clubs 44 or 53 with 3 clubs in east (if he ruffs the 4th club high, either J or 9 of trumps is promoted).
This also depends on hearts splitting.
I think this is better than playing low to the trump return, when the diamond return will force dummy, guaranteeing 2 trump tricks to the defense and communication problems for declarer.
I'd like to hear more from all you about the alternative lines vs this one,
TY
Mauro

Help

Uncontested bidding to 4♠.
♦Ace lead, then switch to small trump