What is the strongest continuation for Black?

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thokkubabu (1660) vs. john2001plus (1867)

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

(black to move) 1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nf6 5. Nc3 Bb4 6. Be2 Ne4 7. Qa4+ Nc6 8. Bd2 Nxd2 9. cxd5 Bxc3 10. dxc6 b5 11. Qxb5 Nf3+ 12. Kf1 Nd2+ 13. Ke1 Qxd4 14. Qd3 Ne4+ 15. bxc3 Qxf2+ 16. Kd1 Bf5 17. Kc1 Qf4+ 18. Kb2 Rb8+ 19. Ka3 Qe5 20. Qd4 Qa5+ 21. Qa4 Qxc3+

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