1NT opposite 6-card major, 11-12 pts

1NT opposite 6-card major, 11-12 pts

N
W   E
 
S
♠ 9 5
♥ Q J 10 6 3 2
♦ A J
♣ K 10 6

Dealer:

West

W N E S
1NT Pass 2♦ Pass
2♥ Pass 3♥ Pass
?

With invitational points and a 6-card heart suit, East starts with 2♦ to get opener to bid 2♥. She then bids 3♥ to show 6+ hearts and a doubt about game.

Opener now has all the information needed to choose the final contract:

Minimum points => pass, to play in 3♥

Maximum points => 4♥