Deal 19 ♠  
 
 
♣  
 
 WEST  NORTH  EAST  SOUTH
1NT
pass2pass BID 
 
 

You open 1NT and partner responds 2.
What do you bid?
  ♠ 10 5
K Q 10 4
A K 7
♣ K Q 9 8
 

 
Deal 19 ♠  
 
 
♣  
 
 WEST  NORTH  EAST  SOUTH
1NT
pass2pass3
pass4♣pass BID 
 

Just hold it a minute and DO NOT say 2.
True, when partner transfers, you almost always just obey and complete the transfer. This is the one time when you don't. You had a 17 point 1NT opener with 4 s and a doubleton. As soon as partner told you to bid s your hand became worth 18 points because of the good trump support and the doubleton. So you inform partner of this by making the "super-accept" bid of 3. In other words, you complete the transfer with a jump.

Partner's eyes get big (but you aren't allowed to notice that) and he bids 4♣.

What do you bid?
  ♠ 10 5
K Q 10 4
A K 7
♣ K Q 9 8
 

 
Deal 19 ♠ K Q 9 4
A J 9 7 3
8 3
♣ A 6
 
 WEST  NORTH  EAST  SOUTH
1NT
pass2pass3
pass4♣pass4
pass6all pass

Partner's ♣ bid was not a suit, you already have an agreed suit, s. The ♣ bid was showing you first round control in ♣s, and is a slam try by partner.

You continue the search for slam by showing your first round control, you bid 4.

That was all partner needed to hear, he jumps straight to 6.


 Deal 20 
  ♠ 10 5
K Q 10 4
A K 7
♣ K Q 9 8