Classic Example

Classic Example

N
W   E
 
S
♠ 8 7
♥ K Q 8 7
♦ 10 6 3
♣ K J 10 7

Dealer:

West

W N E S
1♦ 1♠ Double

Over partner's opening 1♦ we planned to bid 1♥, but North's 1♠ overcall took away our bidding space. Instead, we can double, showing 4 cards in the unbid major.