Transferring can win, but I prefer partner to be able to use his judgment when he has enough information to make a good choice. C URT Use relays. Else, we are done. If it is one of my options, I would issue a balanced hand slam try while showing a 4-card diamond suit. If I can't, I'll find out what I can and then invite slam.
E D Let's look at three different approaches.
Clearly, this is not right. AKx xxx xxxx Kxxx . Otherwise, try to keycard in hearts. That seems okay. If two keycards bid 5 and bid 6NT if partner has the K and 5NT if partner does not have the K .