Five-suit bridge called "Castle Bridge", in which the fifth suit of Castles looked like a Rook chess piece and was colored green. This pack reused the diamond courts for the new suit. The manual that came with this deck did not use Marseille's rules but Ammiel F. Decker's 1933 rules. Ultimately, the complexity of adding a new suit to the game led to it falling out of popularity by the summer of 1938. The rules are similar to regular contract bridge but the new fifth suit is ranked higher than spades but lower than no-trump in bidding. Decks usually came with one
Forty-fives must bid a minimum of fifteen points and five more points than the previous highest bidder, or pass. An exception to this rule is the dealer, who can appropriate (match) the highest bid and force the other players to either raise his bid or pass. Bidding continues to circulate around the table until all players have "passed" (i.e. the same player can bid, be raised, and raise again in turn). When bidding has concluded the highest bidder declares which suit will be trumps. He then takes the hand dealt face down in the centre of the table and chooses his