This book suggests that tactics are the most important component of chess for the improving adult player. The author cites examples of how a computer with postional ability but no tactics would always lose to an alternative machine that was all tactics and no positional play.
Initially the book proposes some simple exercises in which the reader practices moving the chess pieces around the board. For example putting a knight on a1 and then using the lowest number of moves to move it to b1, then a1-c1, a1-d1 etc. These examples seemed so incredibly trivial that i couldn't really motivate myself to do them, although there may be some merit in them after all the author does make the point that sportsmen will often spend hours doing relatively trivial activites to hone their skills, e.g. footballers simple passing, basketballers jump shots etc.
Following this the author then discusses his approach to improving tactics. This involves doing 1,000 tactical exercises in 64 days, then the same exercises in 32 day, 16 days, 8 days , 4 days, 2 days, and 1 day. This is an interesting idea repeating the same exercises rather than going on to new ones, although obviously there is a time commitment here!!!
In conclusion I agree with the author that clearly right tactics play a fundamental role in the improvement of any chess player. However as other reviewers point out, this could all have been written on a pamphlet rather than in a book which simply has so much padding!