the Book of Nelson written as a textbook on methods of finding solutions in the state space, - a major theme in research on artificial intelligence. It sets out the main theoretical results and their illustrations to understand numerous examples of solving problems - the game 15, the game TIC-TAC-Tu, the problem of the traveling salesman problem, the problem of the pyramid, theorem proving, etc.
To read the book requires little knowledge of graph theory, combinatorics and predicate calculus.
the simplicity of presentation and carefully selected tasks of different difficulties make the book useful for students and postgraduate students specializing in artificial intelligence. It will be interesting and specialist as a comprehensive review of a large number of modern works scattered in journals, conference proceedings and reports.