Chess puzzle (Advantage)
Moves: 1. e4 c5 2. d4 e6 3. Nf3 d5 4. exd5 cxd4 5. Qxd4 exd5 6. Nc3 Nf6 7. h3 Be7 8.
Bb5+ Nc6 9. Bf4 O-O 10. Bxc6 bxc6 11. O-O-O a5 12. Na4 Ne4 13. Ne5 Bf6 14. f3
Nd6 15. Qc5 Bxe5 16. Bxe5 Nc4 17. Bc3 Qg5+ 18. Kb1 Rb8 19. b3 Bd7 20. Bxa5 *
Position (FEN): 1r3rk1/3b1ppp/2p5/B1Qp2q1/N1n5/1P3P1P/P1P3P1/1K1R3R b - - 0 20
Black to move.
Themes: Pin Middlegame  
Puzzle rating: 1830
Best move: Rb5