dummy has

...............................K3

...............................J94

...............................A76

...............................AKQ52

YH, under dummy

Q10

K83

9542

J983

The opponents bid uncontested, starting on your left (dummy):

1C* - 1H*

1NT* - 2D*

3C - 3D

3S - 4D

5D - 5NT*

6C* - 7D

1C = natural or balanced outside the NT range

1H = 4+ spades

1NT = "18-19" balanced, good 17s can be upgarded, bad 20s (no 5-card

suit, poor controls) can be downgraded

2D = game forcing enquiry

3C = 5 or 6 clubs, not 3 spades (and not 4 hearts or 4 diamonds, of

course)

3D = natural

3S = Hx (usually Kx)

4D/5D = natural (5D denies a heart control but is suitable for play in

diamonds, 4NT would be regressive)

5NT = grand slam force

6C = 1 of the top 3 honours

You lead a trump to partner's 10 and declarer's Jack.

Declarer thinks for a while and plays a spade, and your card is?

Now, it's obvious when given this as a defensive problem on a forum

that you should play the queen, so my questions are:

1. Why is the queen the right card?

2. Would you find this at the table?