han, on 2012-May-30, 09:04, said:
I like this thread. The arguments for the heart lead are quite convincing, but I would like to check it with a double dummy simulation. In order to get the specifications right I wonder if your partner would often bid 3C without holding a 4-card major. What do you think?
We were discussing how to run a simulation on this. Some questions are answerable and some aren't.
The auction was similar at both tables, although I think at the other table it was simply 2C-2D- 2NT - 3C Stayman - 3D no major - 3NT, so dummy had promised a 4-card major.
We play 2NT-3NT (or via 2C) as artificial, so in our auction dummy had not promised a major. But responder could have bid 3S to force 3NT rather than go through 3C and reveal something of opener's shape. That means either that he was interested in a major suit fit (including a 5-3 one if responder was, say, 1354), or that he thought 3C was less likely to be doubled for the lead than 3S. That might encourage a spade lead in theory, but the opponents didn't ask any of these questions before leading.
The style of responses to 2C might be relevant; at both tables it was the 'English' approach where 2D is any negative or a positive with no suit and 2H/2S/2NT are all natural FG. This gives less information about responder's high cards than control showing responses, or semi-negative or similar.
Also I made the vulnerability game all. The position is different NV, because some pairs are very aggressive overcallers after 2C P 2D; if you were playing us then 4th seat would virtually have denied, say, AJ8xx in spades.