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
Douglas Blackwood which bore his name. He remained chairman of the publishing house until 1983. His biographer, Trevor Royle noted that Blackwood, being shy, could appear remote or aloof, although he was considered "a kindly man who wore his learning lightly". He was most comfortable in military company and never courted literary or political society. He had little literary pretension - when a reviewer asked if he had known George Orwell at Eton - he was six years his junior there and at St Cyprian's - Blackwood replied, "Oh, Blair, yes I remember him, he had a motor-bicycle." However Blackwood's dismissive comment