
<p><img src="Problem-Encoding.gif" width="344" height="67"></p>

<ul>
    <li><em>Main line</em>: the correct solution is on the main
        line.</li>
    <li><em>uliGo</em>: wrong moves are identified with TR or WV
        (Wrong Variation). This is the way chosen by <a
        href="http://www.uligo.com/">uliGo</a>. </li>
    <li><em>Goproblems</em>: the last move of a correct sequence
        has a comment with the word RIGHT. This is the way chosen
        by <a href="http://www.goproblems.com/">gopr