Trial bid : after his partner's raise, the opener names a new suit
The responder has shown support with a simple raise. The opener rebids a new suit... i.e. he is proposing to go to game.
- The opener holds an unbalanced hand
- and is looking for "something" in the named suit. The "something" could be :
- A shortage (singleton or void)
- A high honor
This bid is forcing for one round.