Pard didnt lead
♦. I wonder if he has a holding like AQ....
Since declarer has 17-19, pard must have a few HCP outside of
♦.
Lest assume they are the
♣ Q J.
If you take the ace, and give pard his 2
♦ tricks, and declarer plays you for 4 hearts while holding AQx in hand he can make, by discarding 2
♣ on the QJ o f
♠ (he holds Q J x x as indicated from the NT bid). The
♠ king is needed as an entry to finesse hearts.
If you duck, the spade K can't be used as an entry to finesse
♥
And if trumps aren't pulled you can play a third round of
♠ killing a discard.
I don't see how the 2
♦ can be discarded. So it seems that ducking is safe.
Of course at the table I win the ace and lead back a
♦.
1♣*-1♦-X**-1♠
1N***-2♦-2N-P
3♥-P-4♥-AP