The responder's impossible bid : following a 1NT first response and the opener's major two-suiter
Responder's 1NT bid on the 1st round shows less than 11HCP and no support.
Therefore, on the 2nd round, all jump bids are
impossible bids ! This means
a serious preference for the 2nd suit, with a nice support : we can go to game, and why not to slam..
- A jump bid to 3NT shows a good fit in the 2nd bid suit and a singleton in the 1st one
- A jump bid in the 1st suit shows a good fit in the 2nd suit and a high honor in the 1st one.
- A jump bid in any of the 2 other suits shows a high honor (in the named suit)