SokobanLevel2.xml

<sequence values="BRWDIA">
  <one file="Sokoban2" legend="BIWARD" symmetry="()"/>
  <one search="True" depthCoefficient="1.0">
    <rule in="RB" out="BR"/>
    <rule in="RWB" out="BRW"/>

    <observe value="I" from="B" to="W"/>
    <observe value="A" from="W" to="W"/>
    <observe value="B" to="BR"/>
    <observe value="W" to="BR"/>
    <observe value="R" to="BR"/>
  </one>
</sequence>

<!--
Try solving it yourself: https://www.sokobanonline.com/play/web-archive/razorflame/ionic-catalysts-xi/58022_ionic-catalysts-xi-452
-->