lmilne, on 2015-April-23, 09:24, said:
I must say when I saw this hand I didn't even consider double.
We are vulnerable versus not and you are willing to take the chance of +300 or +500? We have a vulnerable game on ice and fair play for a vulnerable slam! I also think that we if we have +800 against 4♥ (giving them little more than 6 heart tricks, so we take every trick in side suits) we are highly likely to have +1430 in spades.
I don't know whether it's best to go low with 4♠, invite with 5♥, or keycard, but I sure as hell ain't doubling. I really don't get it.
The point is to understand how the double is played by most experienced players these days.
It is NOT showing trump tricks against 4
♥. It doesn't deny trump tricks, but it is not about having them. It is not a penalty double.
There are various ways of describing this double, and the one I like the best is 'transferable values', meaning that we have cards that will be useful on offence if opener has shape and useful on defence if he has a flat hand.
Our hand certainly fits that description, which means that double is an action that we should at least consider. It doesn't mean that it is the action we should take...we need to take the analysis a little further...we need to consider the other alternatives available to us and compare relative merit.
We seem to have 3 possible approaches, altho one of them could be pursued in a number of ways.
We can see this as a slam hand. We can use keycard (altho I think it foolish to do so since knowing how many keycards partner has doesn't let us count tricks), or cue 5
♥ or jump to slam.
However, I think we can all see that slam won't always make. Qxxxx xx AKx Kxx makes for a borderline slam even if the heart lead isn't ruffed, and Qxxxx xxx AKx Kxx is basically hopeless on a heart lead.
So driving to slam is not smart. We could bid 5
♥ and pass 5
♠ but that is likely the worst possible approach. I mean, what are we expecting partner to do when he has at most 1 Ace, and bad trump?
The conservative approach is to just bid 4
♠. That gives up on slam. I can think of almost no hand on which partner should be bidding over 4
♠, since he cannot know that we were not stretching to compete, with a borderline hand. He cannot logically play us for slam interest.
Thus we can see that guessing to be aggressive or to be conservative amounts to our taking unilateral action, with only a hope and a prayer that we have guessed correctly.
Now, ask yourself this: which action would we see as best if we knew that partner had a flat hand?
Which action would we see as best if we knew that partner had shape?
On the first, it would be close between defending and playing game. On the latter, it would be clear to bid, and probably good to bid slam.
Doubling in essence is asking partner which he has. If he has the flat hand, we may collect 500 against 620/650 or we may collect 800. We'd probably prefer to play 4
♠ but defending could be better.
If he has the shape hand, we almost always want to be in slam.
By doubling we go right whenever he has shape and we often survive when he doesn't. This has to be better than our making a unilateral guess now.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari
imps again
aggressive opps
please say what you would do over p's likely continuations if you double or invite.