ArtK78, on 2011-January-19, 11:02, said:
I bid 4♥ and I do not consider it to be close.
While partner may have a diamond card, he does not rate to have one (and if his diamond card is something like Qx, the lead is coming through it, so it has no value). So my ♦A is the only stopper. Unless we have 9 running tricks, we will have to give up the lead. It is not impossible for the preempter to have an outside entry.
Meanwhile, partner made a takeout double and I have KQxx of hearts. I expect to have an 8 card heart fit, but even if I do not hearts should play OK.
If I bid 3NT and partner bid 4♥, I would ask for aces (4NT or 4♠ kickback if available). I do expect partner to have a very strong hand. With "merely" a distributional hand, he would have bid 3♥ or 4♥ over 3♦.
I disagree with most of this.
I like 3N. I'm not so much concerned with RHO having an entry because I doubt RHO has a spade big enough to beat 3N, and thats if he can get it in time, which I doubt. I am very much concerned with 5-1 breaks in hearts, or RHO getting a spade ruff.
If partner continues with 4
♥, no way am I bidding RKC 4N because I will probably get passed! 4
♠ is possible, but I could probably concoct a hand that I would want this to be natural and its ambiguous enough that I would want to avoid it, unless it keycard (and I play this). I think 5
♦ is right, but I doubt I'm getting the information that I need so I could see myself shooting 6
♥.