Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Bird_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Bd6 6. d3 Qh4 7. g3 Qh3 8.
Qf3 h5 9. Qg2 Qg4 10. f4 h4 11. e5 hxg3 12. Qxg3 Qxg3+ 13. hxg3 Be7 14. Nd2 Nh6
15. Nf3 c5 16. Bd2 b6 17. a4 Bb7 18. a5 Ng4 19. axb6 Bxf3 *
Position (FEN): r3k2r/p2pbpp1/1P6/1Bp1P3/3p1Pn1/3P1bP1/1PPB4/R4RK1 w kq - 0 20
White to move.
Themes:  Middlegame  
Puzzle rating: 1018
Best move: Rxf3