Deal 15
 
  3NT



 
 WEST  NORTH  EAST  SOUTH
1NT
pass3NTpasspass
pass

The bidding has been as shown.
The contract is 3NT and it is your lead.

When you have made your choice click NEXT .
♠ K 8 7 3
Q 10 7 3
7 5
♣ 6 3 2



 


 

 
Deal 15
 
  3NT
♠ 10 6 4
6 4 2
K 9 4 2
♣ A K J
  Lead the 3, fourth highest in an attacking suit.

Sometimes it comes down to just this kind of choice.
Do you lead fourth down from ♠ K 8 7 3 or from Q 10 7 3.

The presence of the 10 bolsters the suit enough to give it the edge.

The suits could be arranged something like shown at left.
With a ♠ lead the presence of the ♠10 in dummy allows declarer to make a second ♠ trick, which happens to be declarer's ninth trick.

But when you lead the 3 it does not promote a winner for declarer, and left to his own devices, he cannot establish the ♠ winner.

 Deal 16 
♠ K 8 7 3
Q 10 7 3
7 5
♣ 6 3 2
♠ Q 9 2
K 8 5
A 8 6
♣ 10 9 7 5
  ♠ A J 5
A J 9
Q J 10 3
♣ Q 8 4