Gerber is a contract bridge convention devised by Dr. William Konigsberger and Win Nye from Switzerland who published it in 1936; John Gerber of Texas introduced it to North America in 1938 where it was named after him. It is similar to Blackwood but uses 4{clubs} instead of 4NT as an `asking bid` to inquire about the number of aces held by part.....
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http://en.wikipedia.org/wiki/Gerber_convention
(from the article `bridge`) This was devised in 1938 by John Gerber of Houston, Texas. An unnecessary bid of four clubs, when the bid could not possibly have a natural meaning ...
Found on
http://www.britannica.com/eb/a-z/g/23
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