Yes. But why does this occur? And what case, (a) or (b), is likely to be easier to guess? Why?In case (a), if West has the ace he has to decide whether or not to take it, and if he has the queen he has to decide \vhether or not to cover if the jack has been led. It is evident that West will frequently have a problem.
And in (b)? In this case, when the eight or nine is led West will have to decide if he should take his ace-if he has it. Any West who has the queen only will not be concerned with whether or not he ought to play the queen. In (a), West might hope to gain a trick by covering the jack with the queen, but in (b) it is clear that nothing can be gained by inserting the queen. So West will not think about it unless he is a very professional actor. The trick is to play your cards in such a way as to be able to guess correctly what the defenders are thinking about. Look carefully at the next pair of combinations.
In the third set of hands, if you lead the eight to the king in (a) and it wins, you can come back and lead the nine. It may look to West that you are going to play the queen if he, West, has the ace and does not play it. It may seem that you are only interested in the location of the ace.But in (b), West can see clearly that the location of the jack is important. West is more likely to play low with the ace in (b) than (a) on the second round of the suit. If West thinks on the second round of the suit when you lead the nine in (a), he
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