awm, on 2025-September-14, 13:32, said:
I will note from David's response that in Europe, it is very popular to play that a 2NT advance of overcall shows a good 4+ card raise. This is not so common in North America (from my experience). The hand type you lose by doing this is a non-fitting balanced 13-15 or so, where you are too heavy for a 1NT advance but not strong enough to force game opposite an overcall. You can perhaps get around this by playing forcing new suit advances (not very standard but they have some following), and of course with opener's partner bidding you could also potentially include this sort of hand in double (although in North America Snapdragon is much more common), or you could just hope it doesn't come up (would be reasonable if opponents always have values for their bids, but that's not always true in the modern era).
I can't speak for all of Europe. However, I can share my own experiences:
- Overcalls are light these days. Openings and responses are also light, but not the main source for concern - that's why I like to ask my question about what partner does when given ♠AQ9xx, ♥xx, ♦xxx, ♣xxx and RHO opens 1♣. 2NT isn't safe with 13-15 opposite.
- Normally I play my changes of suit forcing, also by advancer. I find that it doesn't just help on the strong hands, it's also better for finding the right strain. As a cost, sometimes we get too high. In practice I find it much too difficult to diagnose when a pass of a free bid is best and when I should introduce my second suit or return to my first one, so I think the ability to pass partner's bid isn't all that valuable...
- ...except when third seat also bid. When we're fourth to act and the other three players have made non-pass calls I play new suits as NF. The rationale is simple and statistical: give opener 11+, partner 7+ for the overcall, responder 6+ for their action, and we can't have all that much in our own hand (and when we do, partner must have a minimum). And while it's possible that any or all of the bids were even weaker than these limits, it's a terrible parlay bet to aim for two or more of them to hold a minimum. By frequency it's just sensible to treat our hand as limited, and pay up on the big hands.
- But even granting that we hold a 13-15 balanced hand, and that partner's overcall is likely heavy enough that 2NT has reasonable protection, it's still not clear that it's a great bid. We might well choose to defend (we get another bid, responder's action was forcing, or if it was 1NT we can whack it for penalties) with our misfit and the assumed balance of strength, or resort to blast-or-pass.
Combining this, I think a natural 2NT in this auction is both rare and not a real solution to the problem. I'm happy to do without.
1
The hand type is much more relevant when responder passes, and here I play forcing changes of suit but occasionally have to blast-or-pass. Transfers would solve this at a low cost, but I (currently) don't play them.
This follows a general theme: when we have a misfit, stay low and flexible. This part is more meant for people less familiar with these raise structures than awm, but I'll spill some ink on it regardless:
Of all the calls in this scenario from pass and double through 4
♥, only six do not show a fit for me: 'pass', 'double', '1NT', '2
♦', '2
♠' and '3NT'. This is not a coincidence, but a design choice to satisfy two requirements simultaneously:
- We need a lot of raises, anticipating the contested auction. With a big fit this might be our last chance to describe the hand, so we need a lot of accurate ways to show our type of raise.
- On misfit deals we need the flexibility, and our safety level is lower (notice how the 3-card raises are also below 2♥, the 4-card raises below 3♥ etc.). I don't need multiple ways to show a potential misfit hand, instead I need the remaining bidding space after my (cheap) change of suit to find our best strain.
This second point also motivates playing forcing changes of suit while the hand is unlimited. Compress all the potential misfit hands into cheaps bid showing their shape, so that the rest of the system is free to clarify degree of fit. Transfers are even better for this purpose, permitting forcing bids that can still be quite weak.
1Now, as it is, I actually don't love 2NT as the "4(+) card invitational(+) raise". Instead I think it's better to play that 2NT sets up a forcing pass, while 2
♣ does not. This is approximately the same as putting the 3-card strong raises through 2
♣ and the more shapely ones through 2NT, but it's not quite identical. What's more, defining a bid by the continuations means there won't be confusion about when a forcing pass is (not) in effect. And lastly, the requirements automatically adjust to seating, vulnerability, and the auction thus far!