This is consistent with Black's plan based on prepared analysis, but it leads to immediate and significant loss of material here. If, instead, 9. ... Nd5, then 10. Bxd5, c6xd5, 11. Qxd5 and the d4-pawn falls soon after. Black would be left with a 2-pawn deficit, a backwards and isolated d7-pawn, and nothing to show for it.
10. exf6
Black resigned, a piece down with nothing to show for it. If ... Bxf6, then 11. Bb3, 0-0, 12. c4 and White's KB re-enters the game quickly. 1 - 0
