smerriman, on 2022-March-02, 18:45, said:
While I don't understand anyone that bid 3NT over 3♣ (3♦ seems clearcut), I wouldn't be too comfortable with a 4♣ raise. Won't that guarantee a near bottom every time partner has no slam interest? (Or in fact any time we're not making slam, whether they have interest / we bid it or not).
4C guarantees a bottom only if partner have bid their C for the pleasure of « hearing their voice », while they should have bid 3NT w/o leakage, eg 5422 hands with average strength, or even 5431 with a sg honor.
If partner bothers mentioning their C, to me, it means doubts over 3NT, ie:
- either a red shortage, which in that case is worrying since those blank aces are not completely adequate stoppers (they’ll find the lead!), and are more appropriate for suit play
- or slam interest, and my hand with all those A and a super Kx in partner’s other suit cries for action
So I’d definitely not be inconfortable with a 4C raise.
If partner is minimum, in the GF context, they can bid 5C (and I’ll have to resist the temptation!), if in between, they can cue and not take control later on, so we are not necessarily bound to bid slam and I’ve already avoided some doomed 3NT for safer 5m or 4M in 52 fits.
FWIW, I play a game forcing 2NT rebid for 5431 hands (among others), so 3C guarantees a 55 (or a concentrated 54 with slam interest). 4C is even easier in this context but I’d bid it even if it showes 4+.