Byzantine Blackwood convention notrump has been made, a bid of five notrump asks for additional high card "features". A king or doubleton king-queen not already shown in response to four notrump counts as one feature; a guarded king-queen combination not already shown count as two features. The responses are: 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
F. E. J. Fry F. E. J. Fry Frederick Ernest Joseph Fry (April 17, 1908 – May 22, 1989), commonly known as F. E. J. Fry, was a Canadian ichthyologist and aquatic ecologist. He is known for his early research in physiological ecology and population dynamics in fishes. In the late 1940s, he became the first scientist to model how environmental factors affect the activity of fish. He was a 1959 Guggenheim Fellow, and served as president of several organizations including the American Society of Limnology and Oceanography (1951) American Fisheries Society (1966) and American Institute of Fishery Research Biologists (1972). Fry was born