VM1973, on 2011-August-03, 09:33, said:
♠K10x
♠KJ10xx
♦A10x
♣xx
♠Kxx
♥KJxxx
♦Axx
♣AQ
(opponents pass throughout)
1♥-1♠
1NT-4NT (quantitative) ?
VM - No, not exactly. Both the hands you give are outside the range I would use for 1
♥ 1
♠ 1NT.
The first is almost subminimum for a 1
♥ open, and we like to have 12 hcp. On this, I would stretch it, but if playing 8/9-11 5 card 2
♥ open (as I used to), I would prefer that. However when it is a choice between a 6-10 weak 2
♥ which can be 5 card, or a 1
♥, I think 1
♥ is more descriptive. BUT , the 1NT rebid is 12-16 and I would not rebid 1NT on this hand. 2
♠ would be my preference rebid after a natural 1
♠ (though personally I play KI inversion).
The second is too good for 1NT, and I would bid 2
♣ gazzilli, or if not playing that, 2NT natural (17-18) as most round here would.
12-16 is a common NT rebid range here, and we split the range into 12-14 and 15/16 after the subsequent 2
♣ checkback. This is easily handled, as a hand that wanted to invite if opener had 14 or a good 13 would not bid 2
♣ but a natural 2NT. Opener would pass this if minimum, but if going to game would bid 3
♠ with 3 of them.
Really this treatment is just normal acol with 5 card majors, as anyone would play. The strength of the 1NT open is not relevant if you open a major. I play 2/1 in the same way.
So, to continue to your last question, there is never a need for a 1
♥-1
♠ 1NT-4NT quantitive invitation. A hand that wanted to do that would bid (as Semeai says) 2
♣, and over the 3 point range reply make a slam suggestion.
The 1
♥-1
♠ 1NT-4NT sequnce can't exist in a partnership that would not bid 1
♠ with very strong hands, but in a scratch partnership I would take it as ace asking in spades.