</span></h3>
      </div>

      <h4 id="signature" class="signature">
      <span class="modifier_kind">
        <span class="modifier">abstract </span>
        <span class="kind">class</span>
      </span>
      <span class="symbol">
        <span class="name">Board</span><span class="tparams">[<span name="B">B &lt;: <a href="" class="extype" name="ostinato.core.Board">Board</a>[<span class="extype" name="ostinato.core.Board.B">B</span>, <span class="extype" name="ostinato.core.Board.A">A</span>, <span cl