波蘭梅花叫牌制(Polish Club)
以下內容，1C~2S開叫為Polish Club之架構，2N以上並非Polish Club的開叫方式。叫牌內容包含Polish Club以及其他變化形。
Polish Club 2005 Brief remarked by Chang-Biau Yang (楊昌彪)
Polish Club 2005 Full remarked by
Chang-Biau Yang (楊昌彪)
簡易二蓋一叫牌制(2/1, Simplified
Two over One)
以下內容，楊昌彪教授整理。 二蓋一叫牌制 (1/2,
Two over One)
(1) Inverted minor (低花反序)
(2) New minor forcing (新低花迫叫)
(3) Support double & support
redouble (支持賭倍與支持反賭倍)
(4) 4th suit game forcing (第四門新花迫成局)
(5) Forcing 1N (to 1H/1S) (迫叫1N)
(6) Jacoby 2N (傑可貝王牌四張支持)
(7) Bergen raise (柏根王牌四張支持)
(8) Splinter: 4+card support with
at least one honor (斯普林特單缺))
(9) Lebensohl
(雷本索)
(10) DONT (Disturbing Opponents'
No Trump，干擾敵方無王)
(11) RKC 1430 (Roman Key Card問A)