Byzantine Blackwood convention Byzantine Blackwood convention Byzantine Blackwood is a bidding in the game of bridge. Devised by Jack Marx, it is a complex version of the (by which a four notrump (4NT) asks about 's holdings). Its premise is that both aces and kings may safely be shown in response to a Blackwood-type 4NT enquiry; provided that such kings are in well-defined "key" or "half-key" suits, there being no more than two such suits. The name was chosen to express the idea that Byzantine Blackwood is a development from Roman Blackwood, by analogy with the Byzantine Empire and the Roman Empire; rather
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