Tough signalling problem...

[aguahombre]

To me, the suit with XXX in dummy is the OS, not the suit with QX; playing the diamond queen would be a desparado play holding the heart Ace and the QJ of clubs because it risks establishment of the Diamond Jack.

[TWO4BRIDGE]

As I said, playing OS (obvious shift) its clear, as this is the all point of obvious shift.

http://www.bridgewithdan.com/systems/ObviousShift.html

Thx for the link .

 

If I understand it correctly, WEST will SHOW tolerance for an Obv Shift ( he would like a ♣ shift ) with an "Encouraging Discouraging ♦ card " ( either upside down or standard ) on the 1st trick .

 

EAST will find the ♣ shift because it is a 3 card suit headed by at most ONE honor ( either A, K, Q, J or 10 ) in his hand .

Edited March 19, 2013 by TWO4BRIDGE

[jogs]

After the ♦A, play the ♣A no matter what West diamond played.

Now the club card from West will guide East.

[aguahombre]

After the ♦A, play the ♣A no matter what West diamond played.

Now the club card from West will guide East.

But, the guidance might come after East has already blown the contract, in addition to annoying partner who bothered to make his expert signal.

[jogs]

Exchange two cards with West and South.

 

West

 

♠ 5

♥ J74

♦ QJ642

♣ KQ84

 

Now West will play(?) the ♦Q on the opening ♦A.

It will still be right to play the ♣A on trick 2.

[aguahombre]

Exchange two cards with West and South.

 

West

 

♠ 5

♥ J74

♦ QJ642

♣ KQ84

 

Now West will play(?) the ♦Q on the opening ♦A.

It will still be right to play the ♣A on trick 2.

Actually it will break even with the correct play of a low club instead of the Ace.

 

Leading a low club gains when pard has:

--KJ(XX)

--JXXx or Qxxx plus the Heart ace or KJ

 

Leading the ace loses when Declarer has KQX or KJX and pard has a heart trick.

 

Shifting to any club loses when pard has a heart trick and the QJXXX of clubs, but doesn't lose the whole contract if pard only has QJXX.

[WGF_Flame]

Thx for the link .

 

If I understand it correctly, WEST will SHOW tolerance for an Obv Shift ( he would like a ♣ shift ) with an "Encouraging ♦ card " ( either upside down or standard ) on the 1st trick .

 

EAST will find the ♣ shift because it is a 3 card suit headed by at most ONE honor ( either A, K, Q, J or 10 ) in his hand .

discouraging diamond shows tolerance for the obvious shift.

[Adebisi]

Common is to play that A lead asks suit preference, if u hold bare A or bare AK u know suit to follow to get ruff.In this case pd should play small d.But if u lead normal K , pd knows decl has 1 diamond and have to play discg 9.Now odds that in addition to your club ace pd has power in hearts is pretty small.

[TWO4BRIDGE]

discouraging diamond shows tolerance for the obvious shift.

Thanks again ... I don't know how many times I read the reference, but I still got it wrong .... duh ( I corrected my post # 27 ).

 

Discourage = look for a shift

[bluecalm]

I see it as very simple hand.

We need to play high diamond to inform partner that we are not ruffing this suit (ie we don't want him to play K and another). That's all there is to signalling. If you start giving other meanings to low/high diamond here then you will miss very simple hands where we just ruff stuff.

I see giving preference to attitude in side suit instead of lead suit in this case as dubious at best and probably just silly.

 

2nd thing is that maybe W could consider playing Qd here seeing that there are only 2 diamonds (at most) to take anyway. This signal can only mean that W is not afraid of JTxx in dummy taking a trick and that could only be if 1 tempo is enough to establish our winners which in turn only be located in clubs.