MI - information to which the NOS is entitled
N/S vul, dealer N, who holds:
N opens 2 , which shows a weak two in diamonds or one of a variety of strong hands. E overcalls 3 and W closes the auction with 3NT.
The conversation should now proceed:
E: before you lead, my partner should have alerted 3 .
W: I disagree: Director, please.
As director, how do you go about ensuring that N has all the information to which he is entitled in selecting his opening lead, but nothing to which he is not entitled?
I invite you to frame your questions to E/W (and please say if any would take place away from the table), and I will tell you the answers you will get (some of which will be within my knowledge; others I may have to make up in the interests of the exercise). For starters I can tell you that there is nothing about a defence to this opening on the system card.