Unusual 2NT Examples

Board 2
East Deals
N-S Vul
♠A 10 9 8 6 5 4 3
♥A 9 2
♦J 2
♣—
♠7
♥J 10
♦A K 8 7 3
♣K Q 10 9 6
N
WE
S
♠J 2
♥Q 6 3
♦10 5
♣J 8 5 4 3 2
♠K Q
♥K 8 7 5 4
♦Q 9 6 4
♣A 7

WestNorthEastSouth
  Pass1♥
2NT!14♠5♣2Pass
PassPass  
  1. After South bids I♥, West can bid 2NT for the minors.
  2. Does East sacrifice after North bids 4♠? Vulnerability is good.

5♣ by East