I disagree on #3's minimum score, as seen by my comments in my answer:
I noted this when you first posted it. I tried to account for it by adding 2 chars to the posts that had omitted \z and /s. However, I didn't get it right in all cases.
Although, the PGA questions were well specified, it is always possible to miss a boundary condition like this. I should have modified the question to either make this requirement explicit or to specify that it wasn't required.