1NT opposite 5-card major, 13+ pts

1NT opposite 5-card major, 13+ pts

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

Dealer:

West

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

With game points and a 5-card heart suit, East starts with 2♦ to get opener to bid 2♥. She then bids 3NT to show exactly five hearts and 13+ points.

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

Doubleton hearts => pass, to play in 3NT

3+ hearts => 4♥