Contract bridge awards a bonus for holding a certain combination of high cards), although some are common between the two. A larger bonus is awarded if the declaring side makes a small slam or grand slam, a contract of 12 or 13 tricks respectively. If the declaring side is not vulnerable, a small slam gets 500 points, and a grand slam 1000 points. If the declaring side is vulnerable, a small slam is 750 points and a grand slam is 1,500. In rubber bridge, the rubber finishes when a partnership has won two games, but the partnership receiving the most "overall" points
History of contract bridge clubs or spades); and there were slam bonuses. Despite the popularity of whist, this game, and variants of it, "bridge" and "bridge-whist", became popular in the United States and the UK in the 1890s. In 1904 auction bridge, known for a time as "royal auction bridge", was developed where the players bid in a competitive auction to decide the contract and declarer. The object became to make at least as many tricks as were contracted for and penalties were introduced for failing to do so. The modern game of contract bridge was the result of innovations to the scoring of