Correct contract bridge / by E.V. Shepard ; including the official Laws of contract bridge adopted by the Whist Club, New York, and by all the leading clubs in America.

XXI
THE CLUB CONVENTION
THERE is a natural hiatus in ordinary contracting, due to holdings poorly shown by bids of
one, either in a suit or no-trump, but failing to fully
meet the more exacting requirements of opening
two-bids. Various special bids have been introduced
to fill this gap, such as the short suit convention, the
no-trump approach, and numerous "minor suit conventions;" the best of the latter conventions is
termed "the club convention" or more often, "the
Vanderbilt convention." Just because followers of
some other system of bidding may not need to employ this convention does not mean that they will
not be asked by some partners to play it, and in any
event a player should be able to understand what
opposing declarations mean, even if he and his partner have no intention of using the convention.
The no-trump approach possesses the advantage
of utilizing only a single ambiguous declaration
(The opening bid of 2-No Trumps may denote either
three or all four suits guarded). The club convention necessitates several changes from normal contracting: i-No Trump must not be used if an unguarded ace is held or if any suit lies wholly unguarded (the Q X is considered sufficient, as well as
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