In the middle of the hand, If you "must" lead the 3 from K93, I call this a 'descriptive' lead; if you are allowed to lead either the 3 or the 9, depending on whether you want the suit continued, I call this an 'attitude' lead.
Among experts, which would you say is the more common approach, attitude or descriptive?
(And does it matter if the contract is against a suit, or NT?)
A: I don’t know about the terminology, but I would just say that leading a highish spot card (10,9,8,7) to a trick mid-hand is “Top of Nothing.” That is how partner will interpret it, any way. What you actually have is up to you and the message you wish to send.
If you'd like to learn more about BOSTON (Bottom of Something - Top of Nothing) take Larry's QUIZ!
To read Larry's article about defensive carding click here.
There's also lots more information on this subject in Larry's Book Opening Leads.