1♣/1♦ – (1♠) – x
|
|
Dealer:
West
| W | N | E | S |
| 1♦ | 1♠ | Double |
When opponents bid 1♠ over opener's 1♣ or 1♦, a double shows a 4-card heart suit and 6+ points.
It doesn't show the other minor.
Note that responder may have to double with a 5-card heart suit if they have less than 10 points.