foobar, on 2026-April-01, 10:42, said:
That's an interesting treatment. If the cheapest NT is the Q-ask, how do you sign off in 3N for example? How does this scheme work without first knowing whether there are sufficient controls to explore slam?
Also, it will be great if you can give an example with this hand assuming a 1♥ opening.
Sorry, when I write minNT, I was assuming we were at the 4 level. 3NT is natural so 4NT is the cheapest queen ask. This queen ask generally happens after controls are shown and can also come in during DCBs. In effect it's just a way of using an otherwise idle call for something that gives a tangible benefit.
My auction here is pretty unexciting and not relevant to the general discussion. West shows a max 4522 with 6 controls (1
♥ -> 2
♣ -> 2NT -> 3
♥ -> 4
♦). In the first round (at 5
♦) East knows these are
♠K,
♥A,
♦A and a red king, which is sufficient for slam. A second round (to 6
♣) would show
♠Q and
♥K, so basically everything except
♥J, but that's not enough to bid grand in my world. East won't uncover
♥J here on a single dummy auction and there's absolutely no point in using a queen ask from the East side.