Rescue Bids

Some players, especially those who use Weak Notrumps, have certain rescue bids, or "runout" bids, available when their opening 1NT bid is doubled by the enemy. One such method is:

Redouble shows a one-suited hand. Opener must bid 2C, when responder can pass or correct
2C shows clubs and another suit
2D shows diamonds and a major suit
2H shows both majors