--- /dev/null
+<p>
+ If a side lacks a queen, then a special fusion move is allowed by
+ "capturing" a rook with a bishop (and conversely). The result of the
+ capture is a queen.
+</p>
+
+<p class="author">
+ Variant mentioned
+ <a href="https://www.chessvariants.com/play/erf/CoronatC.html">here</a>.
+</p>