Chess puzzle (Advantage)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. Nc3 Nf6 5. d3 d6 6. O-O O-O 7. Be3 a6 8. a3
Na5 9. Ba2 c5 10. Nd5 Nc6 11. Nxf6+ Bxf6 12. h3 h6 13. c3 Qb6 14. b4 a5 15.
bxc5 dxc5 16. Rb1 Qa7 17. Qa4 Bd7 18. Bd5 Rab8 19. Qb5 Rfd8 20. Bxc6 *
Position (FEN): 1r1r2k1/qp1b1pp1/2B2b1p/pQp1p3/4P3/P1PPBN1P/5PP1/1R3RK1 b - - 0 20
Black to move.
Themes:  Middlegame  
Puzzle rating: 1870
Best move: Bxc6