xx1943, on 2012-December-30, 17:15, said:
You know your partner as conservative bidder.
Are you content with 6♠?
Do you gamble 7♠? How big is the danger, that East holds Jxxx in spades?
Do you have a tool to find out the spade quality?
左家开叫多色2♦,其含义包括弱二高花套,低花半逼叫或20-22hcp的大无将。
4nt=RKCB1430,5♠=♠AKQ
那么这时你可否满意于6♠?不满意的话,你进7吗?可是万一东家有♠Jxxx,你将会下一。有何手段去检验同伴♠套的花色质量呢?
partner overcalls 2♠;
4NT is RKCB 1403
5 ♠ shows ♠AKQ
What now?