On Apr 28, 12:38 pm, Andrew <agump...@[EMAIL PROTECTED]
> wrote:
> On Apr 28, 8:41 am, David Babcock <d...@[EMAIL PROTECTED]
> wrote:
>
> > What is standard practice and/or your preferred agreement on these
> > questions, assuming that you open 1S as dealer (matchpoints, both
> > vul), your LHO bids 2S Michaels, and pard doubles to show a desire to
> > defend against at least one possible enemy suit:
>
> The source of all problems in subsequent auctions is the definition of
> the initial double. When double is defined as you describe, if neither
> opponent can penalize (and a trump stack is usually required to
> penalize safely), then subsequent auctions often become a guessing
> game.
>
> Marshall Miles has proposed a better agreement.
>
> Double shows a balanced hand with no fit and general values such as:
> xx, QJxx, QJxx, Axx. Double invites opener to penalize with a moderate
> trump holding of his own, like Hxx.
>
> Double denies a hand that can only penalize one strain like this: xx,
> KQTxx, AJTxx, x since if it does, partner could not safely double 3C
> holding Qxx of clubs. With a hand like the second example, pass on the
> first round and then double 3H if the opponents try to play 3H.
> Similarly, with a hand that can double anything the opponents play,
> pass on the first round and double on the second.
>
> Using this method, occasionally you miss a chance for a number when
> partner has a 4-card stack in the oppo's minor opposite your
> singleton, but in exchange, you get to penalize holding Axx opposite
> Qxx in trumps (which occurs more often). Perhaps more im****tantly:
> * It is far easier for opener to judge when to double
> * Subsequent auctions are much easier, since responder's shape is
> more narrowly defined.
>
> > 1. If advancer bids 3H, or 3C pass/correct which overcaller p*****,
> > is this forcing on pard in passout seat?
>
> Standard is yes, the double creates a forcing auction. Marshall Miles
> thinks it should not be. The problem with double creating a forcing
> auction, is it prevents responder from doubling on many promising
> defensive hands in the 9-11 range. If double is forcing, then
> responder must have the values to sup****t 3NT or a 4-level contract,
> or risk getting to high when your side fails to penalize. a 10-count
> like this: xx, KTxx, AQJx, xxx can not really afford to double if it
> forces your side to 3S or 3NT (if pard can not double 3C, and he will
> be afraid to double unless he holds 4 trumps).
>
> > 2. If overcaller converts the pass/correct bid to 3D and pard p*****,
> > is this forcing on you?
>
> Again, yes, standard says double created a forcing auction.
>
> > 3. Does double of advancer's 3H by you show an interest in defending,
> > or extra values? If the former, how do you show extra values, or do
> > you ignore those for the moment (dicey if the answer to (1) is "no")?
>
> > Your hand is AJxxx AK xx AKxx . What is your call over advancer's
> > 3H?
>
> In any method, opener's double is penalty. Responder invited you to
> penalize when he doubled 2S. However, as you realize, if responder's
> double of 2S could have been made with an insufficient heart holding
> like x or xx, then doubling 3H now would be foolish.
>
> Using Marshall's methods, opener can safely double for penalty.
> Partner has at least three hearts, no spade fit and a balanced hand.
> His shape will be 2-3-4-4, 2-3-5-3, 2-3-3-5, 3-3-3-4, or he will hold
> 4 hearts. If you have a slam, you should do very well against 3HX.
>
> Playing standard methods, it is more difficult. If partner might hold:
> Qx, Jx, AQxxx, QJxxx the penalty against 3H will be insufficient.
> Anything you do is a guess.
>
> Andrew
Without commenting on whether 'new Miles' (pass then double is
cooperative, a la Manfield) is better than 'old Miles' (pass then
double is business - see How to Win at Duplicate Bridge, admittedly
now 50 years old), I must at least raise the question about whether
doubling when the opponents have not disclosed the unbid minor is
wise.
I almost wonder whether or not double show show interest in doubling
either of their minors, thus implying heart shortness (opener could be
at best 5=2=3=3 or 2=5=3=3). In this way, if responder has a 5+ minor
and the opps have a fit in the other minor, he has the distributional
security of knowing of a fit opposite.
In that case, if opener p***** and the opps pull to the other major
and opener doubles, that becomes a business double, but if opener
doubles 2nt and then doubles 3h, it is an optional / takeout double
since the initial doubled denied the ability to penalize hearts
unilaterally.
Henrysun909
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