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Bridge Conventions (List)Gerber 4C asks for key cards. There are 5 key cards - the four aces and the king of the last bid suit Partner responds:
4D= 0/4 key cards
4H = 1/5 key cards
4S = 2 key cards
4NT = 3 key cards
Key Card Gerber
A bidding convention is an agreement between two players on a different meaning of a bid in the card game bridge. These agreements are made so that partners can more quickly determine which contract, with both their cards, they can win together. Often, conventions are forged together into one, which is then called a bidding system.
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