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General 2/1 Style Which do you think is better, and prefer?

#21 User is offline   bucky 

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Posted 2010-November-04, 19:14

View Postmtvesuvius, on 2010-November-04, 17:13, said:

I'll have to dig up Fred's writeup about playing 2N as Natural and Forcing. That seems like a really good idea, and having 1M-Cheapest J/S as the GF raise works pretty well it seems.

It depends on the rest of your system preferences. For pairs that use 1♠-3♣ as Bergen raise, this works great -- they only need to adopt a simple change of using 3♦ and 3♥ as Bergen raises. But if they use 3♣ for something else (one popular treatment is to show invitational hand with clubs and no spade support), they would have to find another bid for forcing raise.
 
 
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#22 User is offline   Zelandakh 

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Posted 2010-November-04, 20:40

View Postbucky, on 2010-November-04, 19:10, said:

Except that geocities web site has closed...

It is now here. Fred's notes for 2/1 structure are available on BBO. At least they are there for the downloaded client version, not sure about the new Flash window as I can never find links to anything there.
(-: Zel :-)
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#23 User is offline   bucky 

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Posted 2010-November-05, 11:53

View PostZelandakh, on 2010-November-04, 20:40, said:

It is now here. Fred's notes for 2/1 structure are available on BBO. At least they are there for the downloaded client version, not sure about the new Flash window as I can never find links to anything there.

Thank you.
 
 
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#24 User is offline   fromageGB 

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Posted 2010-November-07, 15:43

In principle, a 2/1 guarantees a 5 card suit. However ...

I think you need a bid to show a 16+ count that has no 5 card suit to make a genuine 2/1, and for me this is 2♣. So 2♣ is either a 13+ 5+ card suit, ar a 16+ without necessarily having clubs, and 2♦ finds out what it is.
A 2♦ response to 1M has to be a 5+ card suit.

I think it makes it much easier when you know the length of the suit.

Simple hands like the quoted ♠Kx ♥AKQ10 ♦AQ10 ♣xxxx go 1♠ 2♣ 2♦ 2♥ (showing 16+ with exactly 4 hearts) and the quoted ♠K42 ♥9752 ♦AKJ ♣QJ4 goes 1♠ 3♣ to show 13-15 with 3 card support.

This is in the context of a Bergen raise environment where the 4 card major raises are 3M-1 and 3M-2, and 2M+1 is a 4 card support GF shortage inquiry (Jacoby), so we use 2M+2 for a 13-15 3 card support, with 16+ 3 card support going into the 2♣ 16+ options.
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