4.0

As an intermediate player I liked the book, I think 15% of the patterns from the book were unknown or unclear in my mind and now they are stored there, it is an achievement to think you understand them all, I mean you are always searching for something new and chess books present to you 20-30 tiring pages for one pattern, Mr Silman made it simple. I also enjoyed the fact that you do not need a chess board for these teachings.