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
Canapé (bridge) suit is held. Thus, eight-card or longer major suit fits are found right away and some otherwise difficult to bid hands are handled easily. If no major suit exists, the partnership can play in the opener's longest suit. Opening four-card majors frequently has a preemptive value because takeout doubles are less effective in cases where the opponents have not opened their longest suit. When four-card majors were popular in the United States, even the most adamant proponents of "natural" bidding opened four-card majors ahead of five-card minors on hands that presented rebid problems. The following examples apply to some canapé