[rduran1216]

spots in the spade suit or trump suit may be off i didn't take a sheet.

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You lead a trump

♦ 9,2,3,10
♥3,7,Q,K
♦8,K,6,5
♥2,4,A,5
♥8,J, 6,9
♦4,7,♣2,♦A

Now comes

♣7,9,J,Q

What do you do now?

[CSGibson]

it seems to me that partner has a spade card. He got the lead twice and failed each time to lead a spade through the 3 small holding, which usually means that he can stand a spade lead from my side. Thus I lead a small spade to partner's presumed K (in case he has Kx), and take 4 black suit tricks.

[gnasher]

We need partner to have a black king. There are three reasons for thinking this is in spades:
- With ♣K, he might have played it on this trick, to save me a problem.
- With spades headed by 1098 or J98, he might have switched to a spade after the first heart.
- He played 3-8-4 in trumps. When he played the 3, it probably wasn't clear what suit he wanted to signal for - at that point, spades could have been declarer's long suit. When he played the 8, we both knew that the choice was between spades and clubs.

Hence I play him for ♠K.