Over strong 2♣ usually respond 2♦
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Exclusion
To ask for aces with a void, use Exclusion
It’s the Shape, Stupid
Upgrade your hand when shape fits you well
Another Day at the Office
When opponents stay low, contest the partscore
Some Hands Are too Strong
About opening three with AKQ on top
Mystification and Clarification
Double of 3NT asks for a spade lead
