Nebraska Jump Bid is a popular convention used in contract bridge. It is a bid made by the responder after the opener's suit is known. This bid asks the opener to bid his/her second suit if it is different from the first one. The Nebraska Jump Bid is typically used to show a strong hand with a long suit in the second bid suit. This convention allows the responder to explore potential game or slam possibilities in the second suit. There are two types of Nebraska Jump Bids commonly used: 1. Weak Jump Bids: This type of jump bid is made with a weaker hand and a long suit in the second bid suit. The responder's aim is to inform the opener about the second suit's length and strength. 2. Strong Jump Bids: This type of jump bid is made with a stronger hand and a long suit in the second bid suit. The responder's intention is to convey the strength and distribution of the hand, providing useful information to the opener for accurate further bidding. As an example, if the opening bid is 1♣, and the responder holds a strong hand with a long suit in diamonds, they can make a Nebraska Jump Bid of 4♦, indicating a strong hand and encouraging the opener to bid diamonds if possible. In summary, Nebraska Jump Bid is a valuable convention in contract bridge that allows the responder to explore potential game or slam possibilities by indicating a strong hand and a long suit in the second bid suit. It helps the partnership communicate effectively and find the best contract for their combined hands.