Start - Game of Cards
Bridge Conventions (List)Blackwood 4NT asks for controls. There are 5 controls - the four aces and the king of trump. Partner responds:
5C = 0/4 key cards
5D = 1/5 key cards
5H = 2 key cards
5S = 3 key cards
Key Card Blackwood
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.
Disclaimer