whereagles, on 2014-July-09, 16:35, said:
inquiry, on 2014-July-08, 07:49, said:
There are problems with Misiry, but I think underbidding might not be one of them.
Over 4♦ you will most often stop with this East hand. Here is why.
If opener has two losing diamonds, he will bid 4♥ ending the auction opposite this East.
If opener doesn't need any kind of spade control he will rebid 4♥ as a warning as well, and opposite this east hand, this ends the auction
IF opener only needs the ♠Ace, he will bid 4♠ (cheapest bid not in anchor suit), and East will know the "non-material spade king" is useless and you get to 5♥ like the people in the original post.
It is difficult for West to visualize East having what he needs to bid this slam... a third spade and a two diamond would be disaster. IT is easier for East to figure out he has what West needs. Having the weaker hand in control is sort of how this works, as it is easier for him to begin to visualize what might work. That is the point.
I'm not sure I follow all this, but I do agree there can be cases where leaving the weak hand in control works better. After all, it was the strong hand that told its story, not the weak one.
Maybe I find some time to study the matter.
Let's see if we can make it easier to follow (probably not). The 4
♦ bid denies a diamond control (in theory... there is a miserable lie where on some hands where you are going slammking anyway, you might deny controls when you have absolute control... see the notes.. but I have never had one of those hands yet). Over 4
♦ then, you can see why opener, with two (or three) quick diamond losers would try to signoff. So 4
♦ will result in you stopping in 4
♥ anytime opener has two small diamonds (or three, which is his max -- of course with east holding the club king, partner can't have three small diamonds).
Now then, if opener is not off two quick diamonds, he is going to participate with the slam try responder made. UNLESS, he doesn't need a spade control. Why is this? :Let's say opener had something like....
♠void
♥AJxxxx
♦AK
♣AQJxx over 4
♦ he would still bid 4
♥. Does this mean you will miss slams? No. If responder had
♥K (or Q) and
♣K and opener showed three losers, he still knows that there is a slam. The signoff when a control is not needed in the other off suit is just a warning not to count on a control in that other "off-suit". OF course, responder is not obligated to accept the signoff. Why, with heart king and long, and club king opposite such a signoff, it is still possible to bid the grand when you diagnosis the missing heart queen.
If opener needed only the
♠A (has a singleton spade, or has a losing diamond and no spade ace -- even if holding two spades) he would show that. Responder, without the spade ace would know to signoff at the five level. Imagine openers hand was, for instance the same hand but with Kx of spades rather than Ax. With Kx (or even xx because he knows he is off a diamond already so needs the spade ace) he will rebid 4
♠ = only spade ACE works in spades.
So what all this means is that over 4
♦ you get to 4
♥ anytime: opener has two losing diamonds, anytime opener has no need for any kind of spade control. You get to six hearts SOMETIMES when opener needs the
♠K, and you get to 5
♥ anytime opener needs the
♠Ace. Note, he can not be off two spades and a diamond since you have the
♣K and he has only 3 losers.
Now, as responder this is the trade-off at your second bid. Do you want to risk the five level if opener needs only the spade ACE but possibly get to six if he
♠K and end up in four hearts on most other hands. I think for me, the answer is yes. Not that 6
♥ will be laydown or even bid on all hands where the spade king is "needed".. If opener is missing an anchor queen or two anchor kings the slam may not be that good. If you had the
♠K and a sure cover card in one of the anchor suits, over the 5
♣ bid showing the spade king is needed, you would be able to bid the slam.so to show a "non-material
♠K express doubt about bidding the slam, and clearly shows onesure cover card (which here opener will know has to be the
♣K and a distributional 2nd round control of spades. On some hands, of course, responder might have two sure covers and distributional spade control but in that case responder would bid grand slam. Here opener will know responders hand. Responder will have the
♣K (only certain cover he can have) and a fit one or the other anchor suit, and two small spades. So opener will bid the pass/correct 6
♣.
A more challenging hand is if opener is missing some anchor suit stuff.. a hand like
♠Ax [hd]AQJxx
♦A
♣AQxxx. Here the opener will know over 5
♦ (non-material king of spades) that responder has one of the
♥K and
♣K. Here I think opener would be leary of bidding the slam, as the slam requires to pick up the missing anchor honor. Should opener signoff in 5
♥ and responder bid slam anyway, opener will figure he has both missing kings and bid the grand (but really if responder had both kings and a fit, he would have bid grand over 5
♣).
3♣ is weak diamond preempt or a strong two suiter (5-5 or better) with four or less "losers". This is a three loser hand
3♦ pass.correct. It is possible East might have bid 4♦ as well, but here he didn't.
3NT = shows three loser hand with hearts and clubs two suiter.
Over 3NT, East has two potential covers!! The club king is a sure one, so five level is relatively safe. The doubleton spade is a possible "non-material king" taking care of a second round loser in that suit. So he can "explore" briefly slam possibility with a 4♦ denial cue-bid, denying a control in diamonds.
Over 4♦, West knows that partner's keycards are working (but partner might have, for instance five clubs, and is hoping opener is missing the club queen, so that responders hypothetical fifth club covers for a missing club queen, so he can't jump to slam). Opener's "cheapest" non-anchor suit (here four spades) would say only the spade ACE was working. Here he needs the spade king, so he can bid 4NT to show spade king works and he is missing one anchor queen, or he can bid 5C to show the spade king is working and he is not missing an anchor queen. So here he clearly bids 5C -- he needs any kind of spade control (ace or king) and that opener holds both queens in his two anchor suits.
Over 5♣, it is possible that opener has something like ♠xx ♥AKQxx ♦void ♣AQxxxx so responder can't just bid slam (off two spades), so he bids 5♦ which shows a non-material "spade" control, meaning a doubleton here (could even be three small). This is all opener needs to bid the slam. 6♣ is pass/correct, responder places the slam in hearts.
To show how this works I attached an old PDF draft version of the full misiry method which explains the nonmaterial cue-bid methods and why 5♦ cue-bid shows non-material spade control (basically, opener said any cover would work, so he can't have two diamonds, and you already denied a diamond control so no non-material diamond control can be useful, so the only thing of possible value is non-material control in spades).