Chess puzzle (Advantage)
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. Be3 Qxb2 7. Nbd2 Qxc3 8. Rc1
Qb4 9. dxc5 Nge7 10. Bd3 Ng6 11. O-O Ngxe5 12. Nxe5 Nxe5 13. Rb1 Qa5 14. Bb5+
Bd7 15. a4 Nc6 16. Qc2 a6 17. Nb3 Qc7 18. Be2 Nb4 19. Qd2 a5 20. Rfc1 Bxa4 21.
Bf4 Qd7 *
Position (FEN): r3kb1r/1p1q1ppp/4p3/p1Pp4/bn3B2/1N6/3QBPPP/1RR3K1 w kq - 2 22
White to move.
Themes:  Middlegame  
Puzzle rating: 1741
Best move: Nxa5