On May 2, 11:30 am, Andr=E9 Steffens <andre.steff...@[EMAIL PROTECTED]
> wrote:
> J6
> KQT7
> AQ72
> A93
>
> 5
> J6532
> KT5
> KQ86
>
> MP-pairs all green, South deals
> 2H* (pass) 4H (4S)
>
> 2H: Muiderberg: 5 card major, undisclosed 4+ card in a minor, <11
> points
> 4H: to play, can be very variable in strength
>
> 4S is only down one, so bidding 5H is the winning action. However, who
> beteween North and South is the one that should bid it?
>
> -The singleton spade is essential, but in my view the preemptor does
> not mingle further in the auction unless partner asks him to.
>
> -Being North, I would have doubled because of my doubleton spades.
>
> I fed the hand to Jack 4.0 (former world champion computer bridge) and
> to my surprise Jack made the North hand bid 5 H!
>
> Who explains it?
I concur with Henry Lockwood, you have 11,5 RP (my points) initially
while your partner 7,5 RP. Now, if your partner is holding a singleton
spade your hand is now worth 12,5 RP. Basically you have to initially
discard the value of your spade doubleton in view of adding 2 points
for partner's spade singleton (also doubtful since opener can have
2=3D5=3D2=3D4 or 2=3D5=3D4=3D2 or 3=3D5=3D1=3D4 or 3=3D5=3D4=3D1) and
gettin=
g this way to 12,5
RP, your partner does not discard the value of his heart jack despite
holding a nine card fit since the jack in this case is not winning on
a finesse (also unknown to you). Therefore your partner****p is holding
20 RP or 11 tricks but whether you should bid 5H is doubtful, it is
difficult to measure the likelihood of making 11 tricks when both
responder's and opener's hands have such a wide range ( 2H has
obviously a wide range as does the semi-preemptive 4H raise).
Cheers
Boris
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