Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Steinitz_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. h3 Bd7 5. O-O a6 6. Ba4 b5 7. Bb3 Na5 8. d4
Nxb3 9. axb3 exd4 10. Nxd4 g6 11. Bf4 Bg7 12. Re1 Ne7 13. e5 d5 14. e6 fxe6 15.
Nxe6 Bxe6 16. Rxe6 O-O *
Position (FEN): r2q1rk1/2p1n1bp/p3R1p1/1p1p4/5B2/1P5P/1PP2PP1/RN1Q2K1 w - - 1 17
White to move.
Themes:  Middlegame  
Puzzle rating: 1912
Best move: Bg5