Supporting a jump shift

[fuburules3]

http://tinyurl.com/boftgh6

 

I have trouble bidding over jump shifts in real life, so I don't know the best way for GIB to bid his hand. I think that 3D should not necessarily show a real diamond suit since opener may have to manufacture a jump shift with a good hand and that GIB should be hesitant to shade his suit length here. In theory we could have ended up playing slam in a 3-3 fit (although I think with a manufactured jump shift opener could correct to 6NT).

 

Open to suggestions as to how this hand should be bid.

[Stephen Tu]

People in real life don't know how to bid over JS, GIB even worse. One major problem I think is that GIB wants 3 cd support to take a preference back to opener's first suit, which I think is a big mistake. I think the preference should be fairly non-specific, nothing better do, possibly even stiff (arguably unusual, but what is recommended in "Washington Standard", the only book I have with any detail on JS auctions), then opener should describe further (3s with 3 cd spade, 3nt with 1543/2542/some 2632, 4d with true 2-suiter, 4h with huge one suiter and 3d maybe just a fragment). Then the other responder bids can be more tightly defined (3nt with solid stoppers in blacks, limited strength, no great fit for either red; 3s = 6+ spades, 4h=3 cd LR hearts, 4d = 4+ cd support, forcing, extras).

 

I think the auction on this hand should be something like 1h-1s-3d-3h-4d-5c-5s-6d. Don't think opener supposed to jump to 7 with the possible club loser. if responder trots out RKC.

 

GIB on other auctions seems reluctant to bid 4m, perhaps poorly defined, or thinking non-forcing. I've seen it do weird things there mainly on auctions after 2c-2d-3c-? and 2c-2d-3d-? 2c-2d-3c? is a mess, I see it bid 4h with club support and 4 cd heart instead of just 4c? Also it bid 3M there all the time on 3 cds, because too strong for 3d (ch.min 2nd neg), and 3M only showing 4 (should be 5). There was thread a long time ago on this, I made some suggestions Ari said he would possibly implement but never got around to it I guess. (I guess georgi took over for Ari on GIB dev?)

[fuburules3]

People in real life don't know how to bid over JS, GIB even worse. One major problem I think is that GIB wants 3 cd support to take a preference back to opener's first suit, which I think is a big mistake. I think the preference should be fairly non-specific, nothing better do, possibly even stiff (arguably unusual, but what is recommended in "Washington Standard", the only book I have with any detail on JS auctions), then opener should describe further (3s with 3 cd spade, 3nt with 1543/2542/some 2632, 4d with true 2-suiter, 4h with huge one suiter and 3d maybe just a fragment). Then the other responder bids can be more tightly defined (3nt with solid stoppers in blacks, limited strength, no great fit for either red; 3s = 6+ spades, 4h=3 cd LR hearts, 4d = 4+ cd support, forcing, extras).

 

I think the auction on this hand should be something like 1h-1s-3d-3h-4d-5c-5s-6d. Don't think opener supposed to jump to 7 with the possible club loser. if responder trots out RKC.

 

GIB on other auctions seems reluctant to bid 4m, perhaps poorly defined, or thinking non-forcing. I've seen it do weird things there mainly on auctions after 2c-2d-3c-? and 2c-2d-3d-? 2c-2d-3c? is a mess, I see it bid 4h with club support and 4 cd heart instead of just 4c? Also it bid 3M there all the time on 3 cds, because too strong for 3d (ch.min 2nd neg), and 3M only showing 4 (should be 5). There was thread a long time ago on this, I made some suggestions Ari said he would possibly implement but never got around to it I guess. (I guess georgi took over for Ari on GIB dev?)

 

I liked this post (and a good plug for the Washington standard book as the Hardy bidding books I have don't have too much discussion on bidding after jump shifts).

 

I would be interested in hearing more thoughts on the jump to seven diamonds. I can certainly imagine there being a trump loser, but my thought was opposite 4 diamonds, at a minimum if diamonds split 2-2 7 ought to be very good (and with a black king, cold). The question is what is 5NT probing for? It specifically states that it does not promise extras, but will GIB always bid 5NT with all the keycards? If GIB will always bid 5NT with all the keycards, signing off looks much better, but if 5NT is an invitation to seven, then the very good heart suit seems like a very good feature.