Blackwood convention Blackwood convention In the partnership card game contract bridge, the Blackwood convention is a popular bidding convention that was developed by Easley Blackwood. It is used to explore the partnership's possession of aces, kings and in some variants, the queen of trumps, to judge more precisely whether slam is likely to be a good contract. Two versions of Blackwood are common: "standard" Blackwood, developed by Easley in 1933, and "Roman Key Card" Blackwood ("RKC" or "RKCB"), named for the Italian team which invented it. Standard Blackwood enables one partner to count partnership aces and kings in general. Key card variants
Tactic (method) Tactic (method) A tactic (from the Ancient Greek "taktike" meaning "art of arrangement") is a conceptual action aiming at the achievement of a goal. This action can be implemented as one or more specific tasks. The term is commonly used in business, protest and military contexts, as well as in chess, sports or other competitive activities. Strategy is a set of choices used to achieve an overall objective whereas tactics are the specific actions used when applying those strategic choices. In military usage, a military tactic is used by a military unit of no larger than a division to implement