[straube]

If one opens 1D with 10-15 unbalanced or 14-16 balanced and the bidding goes 1D-1H, 1S-1N

what point range should 1N show? Does the bottom of that range allow opener to raise to 2N with safety? With how many hcps should opener raise?

[spotlight7]

straube, on 2019-March-25, 15:08, said:

If one opens 1D with 10-15 unbalanced or 14-16 balanced and the bidding goes 1D-1H, 1S-1N

what point range should 1N show? Does the bottom of that range allow opener to raise to 2N with safety? With how many hcps should opener raise?

KS uses a weak NT and they use 5-8 for a 1N reply. Their

1N rebid shows 15-17 so you can adjust your range to 6-9.

[straube]

spotlight7, on 2019-March-25, 15:29, said:

KS uses a weak NT and they use 5-8 for a 1N reply. Their

1N rebid shows 15-17 so you can adjust your range to 6-9.

Thanks. Sounds like they respond 2N with 10-11 and they don't raise a 1N response?

[Kungsgeten]

Does "10-15 unbalanced" mean unbalanced with diamonds as the primary suit (or at least one of the suits) or could it be other things as well (like clubs + major)?

My suggestion would be that 1D-1H; 1S either promise the unbalanced hand, or the balanced hand. It seems hard if it could be both, precisely because of the problem you post. I've not played weak NT in a "naturalish" context though, so perhaps its doable. My suggestion would be:

1D-1H;
1NT = 14-16, could have four spades.
Suit = Unbalanced.

Perhaps you'd also want a "14-16 raise" and an unbalanced raise, but I'm not sure.

[straube]

Kungsgeten, on 2019-March-26, 06:38, said:

Does "10-15 unbalanced" mean unbalanced with diamonds as the primary suit (or at least one of the suits) or could it be other things as well (like clubs + major)?

It denies a 6-cd minor. Any shortness is possible.

Kungsgeten, on 2019-March-26, 06:38, said:

My suggestion would be that 1D-1H; 1S either promise the unbalanced hand, or the balanced hand. It seems hard if it could be both, precisely because of the problem you post. I've not played weak NT in a "naturalish" context though, so perhaps its doable. My suggestion would be:

1D-1H;
1NT = 14-16, could have four spades.
Suit = Unbalanced.

Perhaps you'd also want a "14-16 raise" and an unbalanced raise, but I'm not sure.

I don't have difficulty differentiating raises of a major.
I'd thought about requiring the 14-16 balanced to rebid 1N. It makes sense but it would require a rewrite that I'd rather not do.

I think my main question at this point is after 1D-1H, 1S-1N if opener should raise with (say) 16 hcps. Yuck but maybe it's necessary.

[etha]

you cld write a bit of deal code and test the outcomes I guess.