17. ... Nxf3 18. Bxf3 Bg5! 19. Qxg5 Qxg5+ ... 0-1
The solution isn't exacly sound. White did take the knight with his bishop and black was able to pin the queen.But if after 17. ... Nxf3 18. Nxf3, then it wouldn't have worked.This just proves how badly I need to work on tactics.