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
Law of total tricks contract. It is of most value in competitive bidding situations where the HCP are divided roughly equally between the partnerships. LoTT is said to be most accurate when the HCP are fairly evenly divided between the two sides and the bidding is competitive. Experts apply adjustment factors to improve accuracy. Payne and Amsbury's "Bridge: TNT and Competitive Bidding" (1981) may have been the first major book on the topic. In the introduction, the authors acknowledge Jean-René Vernes as the first writer to investigate TNT (Total Number of Tricks) Theory. Page 19 includes a key table that may not have been