The book is the outcome of research results by the author. The author's proof theroetic approach to different concepts and constraint solvers in this field is particular attractive and well presented in the book. This framework unifies a whole lot of concepts and approaches in the field of constraint programming.
ALL the materials are well articulated and presented. As a newcomer to the field, I could understand all of the concepts step by step (but in a slow manner because you have to think and digest).
Why I did not give 5 stars to the book because there is no practical sessions for me to try out different algorithms. But the same author has written another book on using Eclipse (a freeware) to do the constraint programming. If two books can be integrated togather, this will be the best.