Blackwood convention when, after hearing his partner's response, the player who bid 4NT wants to stop in 5NT — as this is a forcing bid asking for Kings. A common agreement is that the first non-suit asks responder to bid 5NT. Whenever the first non-suit is a "queen ask", then the next non-suit asks to bid 5NT. This has to be planned in advance as if there is no such space partners have to bid a usually unmakeable slam contract. Blackwood convention In the partnership card game contract bridge, the Blackwood convention is a popular bidding convention that was developed by Easley
HMS Blackwood (F78) HMS Blackwood (F78) HMS "Blackwood" was the name ship of her class (also known as the Type 14-class frigate) of second-rate anti-submarine frigates built for the Royal Navy in the 1950s. The "Blackwood" class displaced at standard load and at deep load. They had an overall length of , a beam of and a draught of . The ships were powered by one English Electric geared steam turbine that drove the single propeller shaft, using steam provided by two Babcock & Wilcox boilers. The turbine developed a total of and gave a maximum speed of . The "Blackwood"s had a