[blml] Protect with 2 HCP?

[Steve Willner]

> From: "Hirsch Davis" <hirsch9000 at verizon.net>
> The first sentence of the intro to L16 defines a set.

If you like.  In particular, it authorizes use of all information in 
that set.

>  it seems clear that the phrase "other extraneous" in the 
> second sentence means something not belonging to the set

It doesn't say _all_, and it does say _may_.  In other words, as regards 
information not in your set, look elsewhere in TFLB.

> With regard to improving L16 do you mean that as a defender, I should be 
> allowed make a remark such as "look at that unsupported king of diamonds in 
> Dummy, partner"? The phrase conveys information about cards that are fully 
> visible, so by your definition it would become AI. 

This is a perfect example of my point.  As you say, the information is 
AI, so look elsewhere.  For this example, L73B1, L12A1, and L12C2 would 
be the ones to look at.  The resulting score might or might not be the 
same as attempting to use L16.

Of course if an effect of the remark is to convey something about the 
loudmouth's own hand, _that_ piece is covered by L16.