Pre-alertThank you partnerGood luck partnerExcellent partnerConvention card

Defensive Lead-signal-discardOffensive 1C, various featuresOffensive - balanced handsOffensive - 1-2 seatOffensive - 3-4 seat

 

Bocchi-Duboin

1§-DBL

 

Pass=Weak or trap

RDBL=5+¨

1¨=Trans -> ©

1©=Trans -> ª

1ª=Trans -> 1NT

2§=Natural