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The array in this game must be of fairly similar total strength to standard modern Chess, as it differs in lacking a Queen usually valued at 9 Pawns, but has 9 extra short-range pieces, including Pawns. However the relative power as the game progresses depends on the promotion rule. If it is as thought most likely Courier will start to lag behind the modern game. On the other hand allowing promotion to any piece would mean that each quarter of all Pawns to be promoted could generate 3 Rooks, a good parallel to 2 Queens. Of course a variant with the Bachelor Chess rules (see small variants) of promotion to modern Queen and win by marriage would be interestingly different.