Robert Todd September 21, 2015 Defense (128) Defense - Opening Leads: Rule of 10 or 12 (3rd or 5th Best Leads) Robert Todd September 21, 2015 Defense Hi AllThis week we look at some alternative agreements about opening leads -- 3rd and 5th best leads. We examine the Rule of 10/12 that is used when playing these kind of leads. DOWNLOAD THIS LESSON: WORD PDF