2NT is 20-21 ; we allow a 5-cd major (almost always 5332), a 7-cd minor (7222), a singleton minor, or a stiff major A or K.
Our methods here :
- 3♣ is regular Stayman. Opener will bid his 4/5-cd major if he has one, 3♦ with none, and 3NT with both. (we can retransfer thereafter).
Over 3♦, a 3M bid will show 4M+5M' (asking opener a 3-cd fit in M'). - 3♦ is a GF transfer for ♥. If opener has 1/2♥ he will bid 3NT, with a fit he will complete the transfer or super-accept by showing a control.
I don't claim that our methods are pretty good, actually I would love to run simulations for these kinds of hands, since yarboroughs are the main weakness of this system.
Anyway, in this situation, what would you do ? What if it begins 2♣ - 2♦ - 2NT ? (22-23)