In his book on chess organization and rules, International Arbiter Kenneth Harkness wrote that it is frequently asked if an en passant capture must be made if it is the only legal move.
I sin bog om skakorganisationer og regler skrev den internationale skakdommer Kenneth Harkness, at der ofte spørges, om et slag en passant skal udføres, hvis det er eneste mulighed for at undvige pat.