lycier Posted December 5, 2013 Report Share Posted December 5, 2013 [hv=sn=lycier&s=SKQ7H9DKQ972CAJ63&wn=机器人&w=SA983HAQJ732DA3C2&nn=机器人&n=SJ54H6DJT864CQ854&en=机器人&e=ST62HKT854D5CKT97&d=w&v=o&b=28&a=1H(Major%20suit%20opening%20--%205+%20H%3B%2011-21%20HCP%3B%2012-22%20total%20points)P4H(Preemptive%20raise%20--%205+%20H%3B%208-%20HCP%3B%204+%20total%20points)4NPPP&p=DAD4D5DKSAS4S2SKHAH6H4H9H7C4HKC3]499|350[/hv] As we know,4N shows minors suits or two suited, so I am wondering why GIB pass my 4N . Quote Link to comment Share on other sites More sharing options...
Antrax Posted December 5, 2013 Report Share Posted December 5, 2013 Because GIB doesn't know it. I think it plays 4NT as natural in this auction. Quote Link to comment Share on other sites More sharing options...
ahydra Posted December 5, 2013 Report Share Posted December 5, 2013 Because GIB doesn't know it. I think it plays 4NT as natural in this auction. Clearly a very useful way to play it, as after an opening bid and raise you often hold 28 HCPs or equivalent playing strength in your own hand...! It's a pity that GIB operates on rules rather than meta-rules. A meta-rule "4NT is only natural if partner's preceding bid was a natural NT bid" or similar would cover all situations. As to the OP: mouse-over a bid first to get an explanation. If there isn't one, assume the bid will be taken as natural :) Besides, you don't really have enough for 4NT on this auction IMO. Opposite little from partner you're down at least 2 in 5mX while 4H may not even make. ahydra Quote Link to comment Share on other sites More sharing options...
georgi Posted December 6, 2013 Report Share Posted December 6, 2013 Included in v29. It captures 1-3M opening - 3-4M raises - 4NT Quote Link to comment Share on other sites More sharing options...
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