Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Steinitz_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. Nxd4 Bd7 6. O-O Nxd4 7. Bxd7+ Qxd7
8. Qxd4 c5 9. Qc4 b5 10. Qe2 Nf6 11. Rd1 Be7 12. e5 Qe6 13. Qxb5+ Nd7 14. exd6
Bxd6 15. Bd2 O-O 16. Re1 Qf5 17. Nc3 Ne5 18. Rac1 Qg6 19. Ne4 *
Position (FEN): r4rk1/p4ppp/3b2q1/1Qp1n3/4N3/8/PPPB1PPP/2R1R1K1 b - - 9 19
Black to move.
Themes: Pin Middlegame  
Puzzle rating: 1211
Best move: Nf3+