What is the best continuation for Black?

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MiffyTotoro (1439) vs. john2001plus (1840)

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

(black to move) 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. f3 d5 5. Bg5 c5 6. cxd5 Qxd5 7. Bxf6 gxf6 8. Qa4+ Nc6 9. dxc5 Bxc3+ 10. bxc3 Qxc5 11. Qb3 Na5 12. Qc2 Bd7 13. Rd1 Nc4 14. Qd3 O-O-O 15. e4 Bb5 16. Qe2 Ne3 17. Rxd8+ Rxd8 18. Qxb5 Nc2+ 19. Ke2 Qe3#

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