Normally if I click a pawn it moves automatically if it only has one available move, so in dark chess to check for possible en passants it wasn't necessary to try the second stage of the move, I only needed to see that the pawn didn't automatically move. Dark chess players should be aware that this is no longer the case (my opponent has just played c6 when I falsely deduced that he must have played c5 on the previous move). We can also select a pawn even if it has no legal move!