[sheilafran]

Please can some experts help me

My partner and I play a big club system so our opening of a major can never be more than 15 points - is it worth using Jacoby 2nt in conjunction with this system and what is the point range of Jacoby 2nt

Help is appreciated

[Free]

Yes it is useful because opener can have a lot of different shapes. He can have singletons, 5-5, balanced,... So it's useful to find this out. Also for forcing pass sequences it may be useful, since not all opponents will pass this out all the time. Showing the right kind of support is always useful.

There's one thing you should keep in mind: opener can have a hand responder needs to make slam possible. Otherwise it's probably better to just bid 4M.

[awm]

It's actually not hard to come up with hands where slam makes on very few high card points. For example:

KQxxxx
x
AQxx
xx

Axxx
xxx
Kxx
AKx

This is only 11 opposite 14 but slam is really quite good. My recommendation is to use jacoby 2NT or something similar over precision openers, and not to change the "point range" all that much. However, hands that are in the minimum game force range without many controls are sometimes better to just bid 4M. It's the control-richness of the responder hand here combined with the useful shape of opener's hand that makes slam good. Jacoby, by asking opener's shortage, is actually quite good for finding these sorts of slams.

[whereagles]

Actually, classic jacoby 2NT works way, WAY better in strong club systems than normal 2/1