 Winstonm, on 2021-August-23, 18:47, said:
Winstonm, on 2021-August-23, 18:47, said:
It's hard to answer without knowing what south bids.  So far, we have 2D-3D-3H-P?
                                                                                                           	4D
4D would confirm hearts and should show first-round control because of the limited range of opening.  
 
I would think Keycard over 4D would be the right bid. Response would show 2 and a void.  East can bid grand.
Sorry, hands in full are as shown:
It would be nice to know that 3
♥ was a forcing bid. I'd have thought invitational in which case game might not even be reached on some hands. However, I'm no expert. 
A raise to 4
♦ over 3
♥ by East gives West the freedom to show his void and the path to 7
♥.
I'm struggling to think of a GF bid apart from 4N and that seems ugly. Hence, I believe your 3
♥ bid is the only solution.
Many thanks