To bid or not to bid -- the perennial dilemma in competitive auctions. The easy answer to the question lies in the correct use of the Law of Total Tricks. The LAW has been part of bridge literature since the 1950s but it was in this book that Larry Cohen brought it to the attention of the majority of bridge players. Still the most lucid explanation of the LAW ever published this is a book that every bridge player needs to own to read to re-read and to study in order to improve their results.