pescetom, on 2025-December-03, 03:13, said:
So in the diamonds variant:
1H 2C
2D 2S
3H ?
Has Opener fixed trumps, and if not which bids by Responder will now do so?
Sure, although 4H is an valid option.
As it is, after 3H, responder has no way to make a move toward slam, except 4NT,
all other bids can be constructed as natural / shape showing.
The beauty of setting trumps (bypassing diamond) is, that you avoid this,
and quite often it is said, that 74 hands can be treated as single suited.
A 3H bid is also leaving the door open to play 3NT, in case the hands dont
mesh well, I mean for all I know, responder would bid the same with 6-4 in the
blacks, and we certainly would bid the same with 6-4 in the reds.
And 3H also does not show any add. strength, and responder could still have a
min game forcing hand as well.
Obv., if p finds a raise to 3D you are better placed to find the possibly better
slam.