As West, you hold:
9763
Q9852
A7
K5.
With the auction shown, what is your opening lead?
5
9
The first trick goes as shown. Before you turn it over (you should always process the first trick!!!), what do you know?
Partner might have the A or K.
Declarer started with either AKJ or AKJ4.
Declarer started with AKJ.
Other
At trick 2, declarer leads a low diamond. You play...
Low
Ace
The K wins in dummy (partner playing the 8) and declarer continues at trick 3 with the 10 as shown.
Now what?
K
5
Your K wins. Now what?