1NT opposite 5-card major, 11-12 pts

1NT opposite 5-card major, 11-12 pts

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

Dealer:

West

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

With invitational points and a 5-card heart suit, East starts with 2♦ to get opener to bid 2♥. She then bids 2NT to show exactly five hearts and 11-12 points.

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

Doubleton hearts, minimum points => pass, to play in 2NT

Doubleton hearts, maximum points => 3NT

3+ hearts, minimum points => 3♥

3+ hearts, maximum points => 4♥