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 g6 6. d4 exd4 7. cxd4 a6 8. Bxc6
Bxc6 9. d5 Bb5 10. Re1 Bg7 11. Nc3 Ne7 12. a4 Bd7 13. b4 *
Position (FEN): r2qk2r/1ppbnpbp/p2p2p1/3P4/PP2P3/2N2N2/5PPP/R1BQR1K1 b kq - 0 13
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1047
Best move: Bxc3