Bocchi-Duboin 2006

1NT(strong)

(Same for reopen)

We:non-Vulnerable

DBL=*4+© + 4+ª

*5¨ + 4cd MAJOR

2§=5§ + 4cd MAJOR

2¨=*6© or 6ª

*Strong 2-suit,M+m

2©=5+© + 4+minor

2ª=5+ª + 4+minor

2NT=§ + ¨

3§¨©ª=Preempt

We:Vulnerable

DBL=13+HcP,Takeout

2§=4+© + 4+ª

2¨=*6© or 6ª

*Strong 2-suit,M+m

2©=5+© + 4+minor

2ª=5+ª + 4+minor

2NT=§ + ¨

3§¨©ª=Preempt