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+p.boxed.
+ Rook and bishop can fusion to become a queen, if the queen disappeared.
+
+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, hence the variant name.
+
+figure.diagram-container
+ .diagram.diag12
+ | fen:1R6/1pr2k2/p1p1p2p/3p3p/2nP3P/1NP3P1/PPK1P3/2R3B1:
+ .diagram.diag22
+ | fen:1R6/1pr2k2/p1p1p2p/3p3p/2nP3P/1NP3P1/PPK1P3/6Q1:
+ figcaption Left: before Rxg1=Q. Right: after the move.
+
+h3 Source
+
+p
+ | This variant is
+ a(href="https://www.chessvariants.com/play/erf/CoronatC.html") mentioned here
+ | .