This book of chess contains all the rules of chess with the technical and tactical considerations, and full of diagrams to illustrate the rules of chess; also, guess 25 tests of checkmate with diagrams (5 moves or less) + 25 quick chess of 20 moves or less. In order to win against the chess computers of top level, you must do many sacrifices; without that, it's almost impossible to win against them. Look at these winning chess to understand that reality The author, J.C. Grenon has won 809 chess against the chess computers of top level; 428 with the white pieces and 381 with the black pieces. At chess, the russian empire is on the wane