Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Cozio_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. d4 exd4 5. O-O Ng6 6. Nxd4 Bc5 7. Nf5 O-O 8.
Be3 Bb6 9. Nc3 d6 10. a4 Bxf5 11. exf5 Nge5 12. Nd5 f6 13. Bxb6 axb6 14. f4 Nf7
15. Qg4 Nh6 16. Qe2 Nd4 17. Qc4 Nhxf5 18. Nxc7+ Kh8 *
Position (FEN): r2q1r1k/1pN3pp/1p1p1p2/1B3n2/P1Qn1P2/8/1PP3PP/R4RK1 w - - 1 19
White to move.
Themes:  Middlegame  
Puzzle rating: 1701
Best move: Nxa8