3N or 4M

[1eyedjack]

[hv=sn=human&s=SAQ53H76DQ7CAJT98&wn=Robot&w=SK982H42D8542CK62&nn=Robot&n=SHKQJT985DAJT96CQ&en=Robot&e=SJT764HA3DK3C7543&d=e&v=n&b=2&a=P1C(Minor%20suit%20opening%20--%203+%20%21C%3B%2011-21%20HCP%3B)P1H(One%20over%20one%20--%204+%20%21H%3B%206+%20total%20points)P1S(3+%20%21C%3B%203-%20%21H%3B%204+%20%21S%3B%2011+%20HCP%3B%2012-18%20tota)P2D!(Fourth%20suit%20forcing%20--%204+%20%21H%3B%2013+%20total%20points)P2N(Stopper%20in%20D%20--%203+%20%21C%3B%202-%20%21H%3B%204+%20%21S%3B%2011-)P3N(4+%20%21H%3B%2013+%20total%20points)PPP&p=H4HKHAH6C7C8CKCQS2D6STSQ&c=11]400|300[/hv]

 

MP, Robodupe, Ver 33

 

This was mirrored at several tables, for a good score to N/S

 

At my table, rightly or wrongly I chose 3C over 4th suit. Responder rebid Diamonds (natural), I bid 3N and responder retreated to 4H, for an inferior score.

 

Notwithstanding the result, I do not think that South's 2N over 4th suit should deflect North from a suit strain.

[Bbradley62]

... rightly or wrongly I chose 3C over 4th suit...

I'd even think that if South bids 2N showing a stopper in diamonds, this increases the likelihood that we belong in a suit because we're likely to have a problem in a black suit. I think you bid correctly, and agree with you that North should bid 3♦ over both 2N and 3♣.

[cloa513]

[hv=sn=human&s=SAQ53H76DQ7CAJT98&wn=Robot&w=SK982H42D8542CK62&nn=Robot&n=SHKQJT985DAJT96CQ&en=Robot&e=SJT764HA3DK3C7543&d=e&v=n&b=2&a=P1C(Minor%20suit%20opening%20--%203+%20%21C%3B%2011-21%20HCP%3B)P1H(One%20over%20one%20--%204+%20%21H%3B%206+%20total%20points)P1S(3+%20%21C%3B%203-%20%21H%3B%204+%20%21S%3B%2011+%20HCP%3B%2012-18%20tota)P2D!(Fourth%20suit%20forcing%20--%204+%20%21H%3B%2013+%20total%20points)P2N(Stopper%20in%20D%20--%203+%20%21C%3B%202-%20%21H%3B%204+%20%21S%3B%2011-)P3N(4+%20%21H%3B%2013+%20total%20points)PPP&p=H4HKHAH6C7C8CKCQS2D6STSQ&c=11]400|300[/hv]

 

MP, Robodupe, Ver 33

 

This was mirrored at several tables, for a good score to N/S

 

At my table, rightly or wrongly I chose 3C over 4th suit. Responder rebid Diamonds (natural), I bid 3N and responder retreated to 4H, for an inferior score.

 

Notwithstanding the result, I do not think that South's 2N over 4th suit should deflect North from a suit strain.

The contract could have been a straight out disaster assuming a sensible lead if South had less cover over spades and clubs and KQ diamonds leading to 4 spade losers and ace of heart.

[lycier]

Good topic with sincere attitude.

 

On the surface it is about 4th suit ,in essence it is about the current Gib system issue.

In my heart I never think the current Gib can dealt with this similar kind of problems well - it needs new bidding system with many of modern bidding approach,for example,walsh ,xyz and MTWS,etc.

In fact the current system had been out of fashion,its idea had been behind the times

[1eyedjack]

In fact the current system had been out of fashion,its idea had been behind the times

GIB system may or may not be old fashioned, but I do not think that this was a sensible auction in any decade.

 

Never mind whether or not 3N makes, or even scores better than a suit (this being MP), once South shows a Diamond guard North should have some slam interest. Investigating slam with a Spade void would require some delicacy, and that I think is one area where GIB is system deficient, but there are more important priorities.

[Bbradley62]

There was a recent thread mentioning GIB making different decisions based on form of scoring. I wonder whether North would make a different final decision at IMPs than at MP.