You are declarer(West) what you would play at trick one
Contract = 3NT
lead = ♣4
- ♠ AJ6
- ♥ K1043
- ♦ 54
- ♣ KJ96
Answer is ♣9
We can assume that North has begun with four clubs headed by an honour. If he has both outstanding honours then we can make four tricks in the suit if we start with the ♣9. North could have something like ♣Q1054
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