Bridge Quiz 21-1
Quiz 20 - Quiz Page - Next - Quiz 22

West
A K 9
♥ Q J 2
♦ A 6 5 3
♣ J 10 3
  East
J 4
♥ K 8 6
♦ K Q 9 4 2
♣ K Q 4

W N E S
1♦ - 2NT  
3NT - Pass -

Although you clearly have a trump fit in diamonds always try to avoid raising a minor suit (♣ or ) if you can.
In this case you have a perfect response : 2NT, it promises 13-15 points and a balanced hand. Next

Why ?
Because playing in NT will give you a much better score.
On this deal :
5♦ making 11 trick = 100 + 300 = 400
3NT making 11 tricks = 160 + 300 = 460