| fen:rnb1kbnr/ppp1pppp/8/3qP3/8/8/PPPP1PPP/RNBQKBNR:
figcaption After 1.e4 d5 2.e5 Qxd5 (anticipating 2.exd5 which isn't played)
+p.
+ When the king is under check, a legal orthodox move must be played.
+ Some weird situations would occur otherwise, like on the following diagram.
+ If we allow self-(re)captures then the king would take on h2 and escape to
+ the third rank.
+
+figure.diagram-container
+ .diagram
+ | fen:7k/8/8/3QR3/3P4/4P3/r6P/q6K:
+ figcaption 1.Kxh2 by anticipation isn't allowed: white is checkmated.
+
h3 End of the game
p.
a(href="http://www.hexenspiel.de/engl/synchronous-chess/") Synchronous chess
| , modified to allow en-passant captures
| and disable the "exchange of captures" stage.
- a(href="http://www.pion.ch/echecs/variante.php?jeu=synchro") Another description
- | (in French).
+ a(href="http://www.pion.ch/echecs/variante.php?jeu=synchro")
+ | Another description
+ | .