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
Atlas E/F upper stage gave the vehicle a payload capacity of to a medium Earth transfer orbit. The SGS upper stage, which consisted of two series-burning solid rocket motors, was used on twelve Atlas E/F launches, with early GPS satellites. The first eight used the SGS-1, which could place of payload into a medium Earth transfer orbit, whereas the last four used the more powerful SGS-2. The eighth launch failed. The Star was used to propel most of the other upper stages used on the Atlas E/F, however it was also used in its own right on several launches. A Star-17A was