The responder after a weak or ambiguous rebid by the opener.
Weak rebids show a 1st zone hand (12-14HCP). They include : The repetition of the opening suit at level 2 , 1 NT and the simple support of the responder's suit at the lowest level. The bid of a new suit at an 'economic' level is ambiguous, as the H
♥ count could be anything from 12 to 19HCP...
- With less than 8HCP: The responder will pass or support the opener at the minimum level
- With 8 to 11HCP A game may be on : The responder will make a non forcing bid describing his strength and distribution ( Jump support, repetition of his suit or 2NT with 11HCP)
- With 12+HCP game at least : forcing bid to look for the best game (3rd of 4th suit forcing, 2♣ 'Roudi'....)
The responder knows exactly the maximum HCP count of his camp. Without the values for game, he must stop ASAP..