msjennifer, on 2016-July-05, 01:59, said:
We all know that 3D is a passable bid.If it is so then I can not understand how 3H a rebid in the same suit can be taken as game forcing.What is responder supposed to bid on xxx ,AQJ9876,void,xxx? In this particular hand if a game force is to be made then it should be in a new suit.Actually I don't mind bidding 4C .If partner has xx or xxx in hearts he will bid 4H.I don't mind playing in 5D with a singleton in spades and xx in D.I am certainly going to bid a game on this holding even at the cost of bypassing 3 NT.
If you play that 3H over 3D is non-forcing then there will be hands where this will work well. And there will be hands, I think far more hands, where it will work badly.
I will illustrate with a different situation. I was playing the other day with a partner who likes 2H-2S, uncontested, to be non-forcing. I opened 2H on a 1=6=4=2 hand with a strongish heart suit. He bid 2S. I duly alerted and explained that we play it as non-forcing. Upon further inquiry I explained that as I understood our agreement it was not even particularly constructive, simply to play. 2S was passed out. He had eight spades headed by the KQ. A success? As it turned out, yes. He can be held to 8 tricks but he made 9. I can, perhaps, take eight tricks in hearts (he has the diamond KT opposite my Qxxx, the J is well placed, I can lead my spade, establish a spade trick, and get to it. for five heart tricks, two diamonds and a spade, but timing may be an issue) and no way I can make 9. They can make 3C but didn't bid it.
So sure, such hands arise and it can work out, maybe with a little help. But I also get good hands with a six card spade suit and when partner opens 2H they are hard to bid if 2S is to play. I can live with various agreements, as long as I know what they are, but I have preferences. I think playing 2S as forcing when partner opens a weak 2H is better, and I think playing 3H as forcing after 1D-1H-3D is better.
And in both cases, forcing is standard.