Black to play for a strong advantage

Indiana State Chess Championship, Indianapolis Indiana
Analysis of Qain, Bill (1744) vs. Coffey, John (2001)

1 2 3 4 5 6 7 8 h g f e d c b a 0

(black to move) 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. Bc2 Nb4 9. Nc3 Nxc2+ 10. Qxc2 Rc8 11. Bd2 Qa6 12. Qb3 Ne7 13. Rc1 Nf5 14. Ne2 Rxc1+ 15. Nxc1 Be7 16. Bb4 Ba4 17. Qa3 Qc4 18. Qxa4+ b5 19. Qd1 Bxb4+ 20. Nd2 Nxd4 21. Ne2 Nc2+ 22. Kf1 Qd3

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