Re: bidding a grand slam

Dave Flower wrote:
On Jul 31, 5:45?am, MadDragon <preemptlo...@xxxxxxxxx> wrote:
the 2 holdings are ::

Dealer:

AKxx
AQJxx
AK
Ax

Partner:

xx
Kxxx
Qxx
xxxx

How do u reach this 7H playing std 2/1..?...I know by playing
precision it can be reached easily.
The normal treatment would be : 2C*-2D*-2H-2S* ..now how do u proceed ?

Would all providers of sequences leading to 7H provide sequences that
stop in 6H opposite:

x x
K x x x
x x x
Q x x x

Dave Flower


2C (P) 2D (P)
2H (P) 3NT (P)
5D (P) 5H (P)
5S (P) 6D (P)
?

The 3NT bid by responder is the closest to this quote:

"After the opening bid of two clubs and the waiting response
of two diamonds, if opener jumps to three of a major suit he
announces that his completely solid suit will be trumps
regardless of responder's holding."

SH: I don't think there is another systemically assigned
meaning for responder to the bid of 3NT, so it could be read
as confirming the trump suit as solid (responder infers that
the 2H bid will show 2 of the top three honors, AQxxxx) so
that hearts have been promoted to a solid suit. It should
show more values than the fast 4H bid.

...."When responder has no first round controls but does have
some second round controls, he rebids three notrump to convey
that message."

SH: So I think opener with the information that the 3NT bid
by responder shows a second round control and that it is
usually used in conjunction with a solid suit can reasonably
figure that responder has the K of hearts, and a little more,
which optimistically might be the K of clubs, or, the D queen.

I think that when the strength is more evenly distributed, then
splinter bids are valuable. But I don't see much reason for the
2C opener to tell responder about his singletons, how that would
convey enough information for responder to contribute brightly.

So the jump to 5D should serve as an asking bid, opener is the
one who needs tools, and showing a singleton gives information.

5D (P) 5H (P)

5H, the first step shows no control, a denial.

The books says further:

"A third round control can be sought in situations where either
an _Asking_ _Bid_ has already denied a first or second round
control, or when responder's bidding has systemically denied a
first or second round control [SH: Not the case in my example].

This use of the _Asking_ _Bid_ or repeated _Asking_ _Bid_ is
answered as follows:

1) The first step denies a third round control.

2) The second step shows third round control in the form
of a doubleton.

3) The third step shows third round control in the form
of a queen."

5D (P) 5H (P)
5S (P) 6D (P)
?

So the 5D is opener's jump asking bid,
and 5H is a one step total denial, then
5S I "think" a second asking bid in diamonds,
and 6D, or three steps show at least Qxx of diamonds.

But I don't see any way of answering raija's objection
that you can't know with grand slam sureness about the
doubleton spade. Responder can have a little more value such
as the diamond jack: xxx Kxxx QJxx xx and a doubleton club,
and the grand slam fails on the duplicated club value. Perhaps
it is more likely with ??(?) Kxxx QJxx ??(?) that responder's
doubleton is in spades judging from opener holding 4 spades, but
that isn't a good enough gamble, leaving the next bid ? = 6H.

So that is my best effort and I had to be quite creative and
it doesn't answer all the questions. I would like to know how
Precision finds the grand slam. The asking bids would surely
have to be started more economically.

Regards,
Stephen






.

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