lycier Posted March 25, 2014 Report Share Posted March 25, 2014 [hv=http://www.bridgebase.com/tools/handviewer.html?sn=lycier&s=SJT95HKQT8DJCAKQ3&wn=GIB W&w=S86HJ74DQ952CJ982&nn=GIB N&n=SA74HA9652DAT6C54&en=GIB E&e=SKQ32H3DK8743CT76&d=w&v=b&b=4&a=P1H(Major%20suit%20opening%20--%205+%20%21H%3B%2011-21%20HCP%3B%2012-22%20total%20points)P2C(Forcing%20two%20over%20one%20--%20biddable%20%21C%3B%2014+)P2H(Opener%20rebids%20suit%20--%205+%20%21H%3B%2011-21%20HCP%3B%2012-22%20total%20points%3B%20forcing%20to%203N)P3H(Support%3B%20possibly%20a%20strong%20hand%20--%203+%20%21H)P4H(5+%20%21H%3B%2011+%20HCP%3B%2012-16%20total%20points)P4N(Blackwood%20%5BH%5D%20--%203+%20%21H%3B%20biddable%20%21C%3B%2020+)P5C(Zero%20or%20three%20key%20cards%20--%205+%20%21H%3B%2011+%20HCP%3B%2012-16%20total%20points)P5H(Signoff%20--%203+%20%21H%3B%20biddable%20%21C%3B%2020+%20total)P6H(Correct%20back%20-%203/4%20Key%20cards%20--%205+%20%21H%3B%2011+%20HCP%3B%2012-16%20total%20points)PPP&p=SKS5S6SAH9H3HKH4HTHJHAD3H6C6HQH7DJDQDAD4C4CTCAC2CKCJC5C7CQC8S7S2C3C9H5S3S4SQS9S8D8H8D2DTSJD5D6D7STD9H2DK]499|350[/hv] 6♥ was alerted as "Correct back - 3/4 key cards -- 5+♥,11+hcp,12-16 total points".I know GIB have been improved here,but what's the meanings of GIB's 3/4 key cards? Quote Link to comment Share on other sites More sharing options...
ahydra Posted March 25, 2014 Report Share Posted March 25, 2014 It means that GIB has 3 or 4 key cards (and so wants to be in slam). 5C was 0 or 3, it actually has 3, so raises the signoff to six. Similarly over 5D showing 1 or 4, if it actually has 4, it would raise the signoff. ahydra Quote Link to comment Share on other sites More sharing options...
georgi Posted March 25, 2014 Report Share Posted March 25, 2014 The only one weak spot here is if 4NT asking person has 0 key cards and there is 5C reply. Bidding 5M would be raised to 6M without 2 key cards, but supposedly it won't happen in careful bidding and more likely no reason to ask with zero key cards. Quote Link to comment Share on other sites More sharing options...
Bbradley62 Posted March 25, 2014 Report Share Posted March 25, 2014 I think OP was commenting that if 5♣ is explained as 0 or 3, 6♥ ought to be explained as 3, not 3 or 4. Quote Link to comment Share on other sites More sharing options...
georgi Posted March 25, 2014 Report Share Posted March 25, 2014 Point taken about explanation clearness. Will be separated in next version. Quote Link to comment Share on other sites More sharing options...
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