[gnasher]

At IMPs, nobody vulnerable, playing 2/1 as it is normally played in North America, what are a normal minimum and maximum for

  1♦ (1♠) 2♦
and
  1♦ (1♠) 3♦

[JLOGIC]

For me a min 3D bid would probably be something like, 0 with 6 diamonds, or maybe one redeeming feature with 5 diamonds (like QJxxx or a stiff), or possibly 4 diamonds and a weak hand with a stiff like x xxx Qxxx QJxxx (so maybe a stiff and a smattering of values, never 4 diamonds and a balanced hand for me).

A max would probably be something like a 6 count or something. I expect my partner to pass with a balanced 18-19.

A 2D bid would be something like where the 3D bid left off, ~6/7-9 with 5 diamonds, or ~5-9/10 with 4 diamonds. It's hard to quantify things in points of course.

If I was vul this would all be pretty different, I play 3D closer to a mixed raise and expect partner to bid with 18-19 bal for sure. So 2D is usually 4 diamonds, or maybe a balanced hand with 5 diamonds that is not very good, or maybe some balanced hand with good defense and like 8-9 count that doesn't look like a 3D bid or a limit raise.

I don't know that any of this is normal or not, and clubs is different than diamonds to me. I do like defining the 3D bid as "want partner to bid with 18 bal" or "want partner to pass wtih 18 bal." Of course there is some overlap and sometimes you stretch to bid it risking getting too high sometimes or too low sometimes depending on which you've defined it as, just because it looks like preempting them is the best course of action. I do not like a super wide range like 0-9 or something though which some people favor.

I would not mind playing something like 1D (1S) 3C is a mixed raise, 3D is a weak raise, and 2D is a normal raise which is usually with 4 trumps, but tbh I play strong club with all of my serious partners now so I have never made an agreement like that for a competitive auction. It does seem like we're trying to fit too many hand types into just these 2 bids though and a 3rd would be quite useful.

[mohitz]

I would also be interested in knowing how often players make a single raise on 3 cards when partner could potentially have opened on a 3 carder.

For example, suppose you hold all NV, ♠Kx ♥98xx ♦Qxxx ♣Kxx. What do you bid after partner opens 1♣ and RHO overcalls 1♥?

[Free]

mohitz, on Jul 20 2010, 10:54 AM, said:

I would also be interested in knowing how often players make a single raise on 3 cards when partner could potentially have opened on a 3 carder.

For example, suppose you hold all NV, ♠Kx ♥98xx ♦Qxxx ♣Kxx. What do you bid after partner opens 1♣ and RHO overcalls 1♥?

That's why Dbl or 1♠ shows 4+♠, and the other shows values without fit/stopper/support. I never support minors on 3 card.

For the raises, I pretty much agree with Justin. 2m is around 6-9 with 4+m, 3m is more preemptive (unless vul).

[gwnn]

mohitz, on Jul 20 2010, 09:54 AM, said:

I would also be interested in knowing how often players make a single raise on 3 cards when partner could potentially have opened on a 3 carder.

For example, suppose you hold all NV, ♠Kx ♥98xx ♦Qxxx ♣Kxx. What do you bid after partner opens 1♣ and RHO overcalls 1♥?

pass or 1NT.

[peachy]

Common way to play - in the western US anyway - is that raise to 3D is always weak (long support, less than limit raise) with or without competition and that 2D in competition is a normal single raise but not enough shape or enough trumps for a raise to the three level, and possibly also too much defense to promise a weak hand. Limit raise or GF raise goes via cuebid.

[jdonn]

Minimum for 2♦: xx Kxx Qxxx xxxx. Jlogic explain 3♦ well.