Oh. Given the context, I can see how it's possessive. I admit I missed that particular comment in the other thread. Granted, I didn't read that other thread in depth until I started wondering why you had a problem with brian_d_foy. I think you can see that without the stated context, your .sig could be interpreted as a grammatically incorrect flame against Mr. Foy.
I'll admit to not following chess, either.
Given the self-deprecating context of your sig (apologies for mis-reading it), I'll update my re-format.
s**lil*; $*=join'',sort split q**; s;.*;grr; &&s+(.(.)).+$2$1+; $; =
qq-$_-;s,.*,ahc,;$,.=chop for split q,,,reverse;print for($,,$;,$*,$/)