When to hold up a trump winner, pt. 2

Contract: 4   
Lead:  5

North

 J 8 6

 10 8 4

 K 4 5 2

 K 3 2

Bryan

 5 2

 A 9 7

 Q 10 8 3

 J 10 6 4

Me

 A 10 9 4 3

 K 5

 J 9 7 6

 9 8

South

 K Q 7

 Q J 6 3 2

 A

 A Q 7 5

I won the lead with my ace of spades and returned a spade, which South won. South then led trump from his hand. Should Bryan, holding the ace of trump, play it now, or should he perhaps hold onto it?

If he plays it now, we win three tricks but the opponents make their contract.

If he holds it up, I'll win with my king of trump and lead another spade for Bryan to ruff with his 9. Then his heart ace, held up once but played in due course, takes the setting trick.