move. Almost all of Black's moves lead to checkmate , for example 7. ... Nc6 8. Bxf7 Ke7 9. Qe6#. 7. ... Qd7 loses the rook to 8. Qxb7 followed by 9. Qxa8. Notice that Qe7 saves the rook with this combination: 8. Qxb7 Qb4+ forcing the queen exchange saving the