with an opposing player 39 s citizen piece they are considered what is known as u201c en passant u201d which is used in standard chess in particular preferred embodiments citizens can be captured u201c from behind u201d on the diagonal by opposing citizens on their flanks although citizens still capture in the same fashion on the diagonals using this methodology citizens can attack other game pieces at any diagonal that does not violate the backwards rule for citizens in preferred embodiments when a player 39 s citizen advances to an opponent 39 s panel board and the row that is located farthest from the inner board institutional row it can be promoted this is referred to as a u201c power shift u201d and that piece is promoted in the following manner the player must verify if the piece is an overt square light colored universal square or covert dark colored if the citizen piece is on an overt square the citizen will be promoted to an overt institutional piece if the citizen piece is on a covert square the citizen will be promoted to a covert institutional piece if the citizen piece is on a universal square the citizen can be promoted to an overt or covert institutional piece all citizens 39.