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
Hand evaluation excess of 3 in the suit; for short suits only clear winner combinations are counted: An Acol strong 2 of a suit opening bid is made on 8 playing tricks (Landy 1998) This statistically derived method for evaluating Contract Bridge hands was developed by Zar Petkov. It attempts to account for many of the factors outlined above in a numerical way. A key differentiator between the bidding effectiveness of experts versus laymen is the use of hand visualisation during all stages of bidding. In his book "The Secrets of Winning Bridge", Jeff Rubens advises to focus on just a few