user-1: From FIDE Laws of Chess:

FIDE Laws of Chess cover over-the-board play.

So, which rules cover Internet chess play?

user9025: Each individual site will have their own rules, although many of them will be the same.
I haven't played online in years, so I can't list specifics, but I know the rating systems are different from site to site. 

-1: <p>From FIDE Laws of Chess:</p>

<blockquote>
  <p>FIDE Laws of Chess cover over-the-board play.</p>
</blockquote>

<p>So, which rules cover Internet chess play?</p>
 9025: <p>Each individual site will have their own rules, although many of them will be the same.</p>

<p>I haven't played online in years, so I can't list specifics, but I know the rating systems are different from site to site. </p>
