Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. c3 e6 7. Bc4 Nge7 8. a3
O-O 9. O-O a6 10. b4 Qc7 11. Ba2 d6 12. f4 Bd7 13. Qc2 Nxd4 14. Qf2 Ndc6 15.
Rd1 Nc8 16. a4 Nxb4 17. cxb4 Bxa1 18. Nd2 Bg7 19. Nc4 Bxa4 20. Rd2 b5 21. Nb2
Rb8 22. Nd3 Qe7 23. e5 dxe5 24. Bc5 Nd6 25. fxe5 Ne4 26. Qe3 Nxc5 27. Nxc5 Qa7
28. Rd7 Qb6 29. Qf3 Bc2 30. Rd6 Qb7 *
Position (FEN): 1r3rk1/1q3pbp/p2Rp1p1/1pN1P3/1P6/5Q2/B1b3PP/6K1 w - - 7 31
White to move.
Themes:  Middlegame  
Puzzle rating: 1271
Best move: Nxb7