oblem session</a></li>
</ol>

<hr>

<h2><a name="Lancement">Starting a problem session</a></h2>

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<p>A problem session is started with the <em>Problems/Solve
problems </em>menu. The options of the session are:</p>

<ul>
    <li>the problem selection mode,</li>
    <li>the random orientation or random color of the position,</li>
    <li>the ratio of previously failed problems,</li>
    <li>the way the correct or incorrect moves are encoded.</li>
</ul>

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