i****e
发帖数: 642 | 1 这是一副BBO实战6NT。
AKJ9x
x
AKJTx
Kx
8x
AKxx
98
AJxxx
南先开叫，对方没有干扰:
1C 1S
1NT 2D
2H 3D
3NT 6NT
首攻HJ。这样HQ应该在东，但这没什么关系。关键是其余的三个Q在哪呢？如何获得最
好的机会? | b***y
发帖数: 2804 | 2 并不是一个很好的满贯。没有很好的配合，联手31点就比较吃力。先打方块试试吧，这
上面拿到5墩的可能最大。 | i****e
发帖数: 642 | 3 The same as my choice. D9 holds the trick, and both opps follow small. What
is next?
【在 b***y 的大作中提到】
: 并不是一个很好的满贯。没有很好的配合，联手31点就比较吃力。先打方块试试吧，这
: 上面拿到5墩的可能最大。
| b***y
发帖数: 2804 | 4 Very unlikely that RHO is ducking DQ. But even with 5 diamond tricks, I only
have 11 top tricks. As I said, this is not a great slam, although hardly
the worst I've seen.
I think S9 makes spade suit more attractive for developing the additional
trick. Options are:
1) Finesse SJ, if lost then later finesse S9. 75% chance.
2) Finesse SJ, if lost then later play AK for drop. In addition to LHO
holding SQ, it also works if S are 3-3, or ten-doubleton. Somewhere around
77%.
3) Cash AK, then 3rd spade. Works if 3-3, or any Qx, Tx, or stiff Q or 10.
Around 70%.
So option 2 is best. In addition to higher percentage, it also has a big
advantage over the other two options: if after AK, remaining spade is not
good, you can still fall back to club finesse. In both options 1 and 3, if
you lose you may be down immediately without being able to try clubs.
But to do that, we need to play to SJ immediately. If we continue diamonds,
we will be stuck in dummy.
In summary, sequence is: D9 (holds), then spade to SJ. Say it loses and
heart back, win in hand (pitch a spade), diamond to D10, hopefully cash
remaining diamonds, then cash SAK. If S10 doesn't drop, then: if LHO has S10
, play CK then CJ finesse; if S10 is with RHO, play CK then CA (show-up
squeeze).
What is next?
【在 i****e 的大作中提到】
: The same as my choice. D9 holds the trick, and both opps follow small. What
: is next?
| i****e
发帖数: 642 | 5 Nice analysis. I think your plan is better than what I did, although I made
it due to stupid defense mistake :)
I continued D, with east discarding a H. So there were only 4 D tricks. I
cashed one more D, discarding H in hand, while east discarded another H.
Then I went to similar approach as your plan 3, trying to drop any of ST or
SQ, or 3-3, but found east holding QT fifth (he did not pitch any on D!).
Now it seemed to me the only chance was C3-3 and Q onside. But west won CQ,
but returned C (a mistake but not very stupid). It was 3-3, so I should be
one down, but west discarded H, keeping his useless D. You could see any
stupid mistake at BBO.
only
【在 b***y 的大作中提到】
: Very unlikely that RHO is ducking DQ. But even with 5 diamond tricks, I only
: have 11 top tricks. As I said, this is not a great slam, although hardly
: the worst I've seen.
: I think S9 makes spade suit more attractive for developing the additional
: trick. Options are:
: 1) Finesse SJ, if lost then later finesse S9. 75% chance.
: 2) Finesse SJ, if lost then later play AK for drop. In addition to LHO
: holding SQ, it also works if S are 3-3, or ten-doubleton. Somewhere around
: 77%.
: 3) Cash AK, then 3rd spade. Works if 3-3, or any Qx, Tx, or stiff Q or 10.
| b***y
发帖数: 2804 | 6 You mean, East un-guarded hearts to keep the useless 5th spade, and West un-
guarded hearts to keep the useless diamonds (after you already showed no
entry to dummy to cash the diamonds), so your 3rd heart became good? You
must give credits to both opponents for making this 6NT.
【在 i****e 的大作中提到】
: Nice analysis. I think your plan is better than what I did, although I made
: it due to stupid defense mistake :)
: I continued D, with east discarding a H. So there were only 4 D tricks. I
: cashed one more D, discarding H in hand, while east discarded another H.
: Then I went to similar approach as your plan 3, trying to drop any of ST or
: SQ, or 3-3, but found east holding QT fifth (he did not pitch any on D!).
: Now it seemed to me the only chance was C3-3 and Q onside. But west won CQ,
: but returned C (a mistake but not very stupid). It was 3-3, so I should be
: one down, but west discarded H, keeping his useless D. You could see any
: stupid mistake at BBO.
| i****e
发帖数: 642 | 7 Yes, that was what happened :) I did not expect to make it if CQ is off.
East unguarded hearts before I tested spades (keeping both useless spades
and clubs). But that could mislead declarer.
West's mistake in the end can only be described as stupid.
un-
【在 b***y 的大作中提到】
: You mean, East un-guarded hearts to keep the useless 5th spade, and West un-
: guarded hearts to keep the useless diamonds (after you already showed no
: entry to dummy to cash the diamonds), so your 3rd heart became good? You
: must give credits to both opponents for making this 6NT.
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