Gerber convention

Ger·​ber convention | \ ˈgərbər-\

Definition of Gerber convention

: a bidding method in contract bridge that is based on the Blackwood convention and that uses a bid of four clubs instead of four no-trump as the asking bid, with responses of four diamonds to show no ace, four hearts one ace, four spades two aces, four no-trump three aces, and five clubs four aces

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History and Etymology for Gerber convention

after John Gerber, 20th century American who devised it

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