Negative Doubles

Board 4
West Deals
N-S Vul
♠9 6
♥9 8 7 6 5
♦J 2
♣K Q 9 4
♠5 4 3
♥A 4 3 2
♦K 9 4
♣8 6 5
N
WE
S
♠A J 10
♥K 10
♦A Q 8
♣J 10 7 3 2
♠K Q 8 7 2
♥Q J
♦10 7 6 5 3
♣A
WestNorthEastSouth
PassPass1♣11♠2
Dbl3Pass1NT4All pass
  1. E opens 1♣
  2. S overcalls 1♠
  3. W has enough points for a negative double showing his ♥
  4. E has to decide whether to bid 2♣ or 1NT. 2♣ looks tough as the cards lie.
1NT by East