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
Mount Blackwood Mount Blackwood Mount Blackwood is a mountain located within the boundaries of the Mackay Regional Council in Central Queensland, Australia and has an elevation of 639m. It is covered in dense tropical rainforest and is home to the Mount Blackwood Holly ("Graptophyllum ilicifolium"), a species of shrub endemic to the area. It also has the Pioneer Valley close to the region. Also nearby mountains are Mt Jukes, Mt Ossa and Mt Brampton. Mount Blackwood is used for commercial television transmission, such as ABC Queensland, and other communications in the Mackay district. It is also used for transmission of VHF Automatic