mikeh, on 2014-March-17, 17:27, said:
The approach of splitting 6=4 major hands still has utility even when 2♦ is gf: indeed, it can be even more useful since responder can be very strong for 2N, and now being able to distinguish strength for opener can lead to some very nice auctions.
My own preference is these days to bid 2♥ on all 6=4s because in all my partnerships 2♦ created a gf. If we belong in a heart slam, I want responder to be able to set trump at the 3-level, and if I rebid spades, then either one of us bids hearts at the 3 level, the other one can't raise without risking a pass in 4♥....one can come up with inferential cuebidding, I suppose, but that is a poor kludge most of the time. However, there are undoubtedly hands on which the old method would work well.
Indeed, in 2/1 g.f., if Responder rebids 2NT, we are much better off when Opener is 6-4 and showed his strength by bidding 6-6-4 with the minimum and 6-4-6 with extras. Your preference (always bid 2
♥) and the reasoning is one rationale. We have found another one, which converted us away from splitting 6-4's after a 2
♦ response.
At the moment we rebid 2
♠, there are hands where that rebid must be made without 6 Spades. The big problem comes when Responder isn't nice enough to rebid 2NT --- she rebids 3
♦ or 3
♣. Now, 3
♥ is a stall, not guaranteeing 4 cards and we still haven't shown 6 Spades. Conversely if we rebid 2H and Responder continues with 3m, 3
♠ is a stall not guaranteeing 6 Spades --- but at least we showed 4 hearts on the previous round.
We don't have the same problem over a 2
♣ response because 2
♠ guarantees 6 of them and continuations are natural (no stalls).