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Bridge Conventions (List)
A variation of 2-way Stayman invented by E. Murray The 2D response to partner's 1NT opening demands opener bid longer major suit.
Responder may then pass or bid 2NT to ask for four card suits up the line; the 2NT bid is gameforcing.
Murray 2D
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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