Unusual 2NT Examples

Board 1
East Deals
None Vul
♠A 10 6 4
♥K
♦J 10 9 3 2
♣J 9 8
♠9 7 3
♥Q 10 8 3
♦A Q 6 4
♣7 5
N
WE
S
♠K
♥J 7 2
♦8 7
♣A K Q 10 4 3 2
♠Q J 8 5 2
♥A 9 6 5 4
♦K 5
♣6

WestNorthEastSouth
  1♣12NT!2
Pass3♠3PassPass
Pass   
  1. East opens 1♣
  2. South bids 2NT for the majors
  3. North has an easy choice

3♠ by North