Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Steinitz_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. O-O Bd7 5. c3 a6 6. Ba4 b5 7. Bb3 Nf6 8. d3
Be7 9. Bg5 O-O 10. Nbd2 h6 11. Be3 Na5 12. h3 Nxb3 13. Qxb3 Be6 14. Qc2 Qd7 15.
b4 Bxh3 16. Nh4 Qg4 17. g3 Bxf1 18. Rxf1 g5 *
Position (FEN): r4rk1/2p1bp2/p2p1n1p/1p2p1p1/1P2P1qN/2PPB1P1/P1QN1P2/5RK1 w - - 0 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1469
Best move: Nf5