Rex Bridge is likely to become the contract, the valuation of the hand is again counted according to the Contract Bridge practice. A second major difference is the possibility to bid at level 8 and 9. This may seem awkward, as it would take 14 or more tricks to make a contract at level 8 or higher. Even if the declarer takes all 13 tricks, he will still incur a one trick penalty. However, the payment for a made grand slam can still outweigh several doubled penalties. How many depends on vulnerable or not. Consciously bidding higher than what the cards says
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