BBS 31-1 開叫 3NT 史蒂曼特約發展

https://4rdp.blogspot.com/2022/01/bbs-31-1-3nt.html

 發展通則：答叫者再叫品 4NT 為黑木特約，答叫花色為滿貫邀請

3NT   ---   4C     --- 4#      ---   ---                 4NT                 5-6NT                 (#)	束叫 黑木特約 點力同直接答叫 5-6NT 牌型不明 邀請滿貫，所叫花色為牌組，通常牌型為高花四張，低花五張                   也可能示叫
3NT   ---   4C     --- 4D     ---   4H/S  ---                 5C/D	? 低花牌組
3NT   ---   4C     --- 4D     ---   5C/D  --- 5#	示叫
3NT   ---   4C     --- 4H/S  ---   5H/S  ---	王牌邀請

BBS 31-1 (STAYMAN.3NT  A 1.01)