What is the strongest continuation for Black?

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john2001plus (1938) vs. JohnT1234 (1270)

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

(white to move) 1. Nf3 d5 2. d4 e6 3. c4 c5 4. cxd5 exd5 5. Nc3 cxd4 6. Nxd4 Nf6 7. Bg5 Be7 8. e3 h6 9. Bh4 Nc6 10. Bd3 Be6 11. O-O Qd7 12. Rc1 a6 13. Nxc6 bxc6 14. Na4 Bd8 15. Qc2 O-O 16. Nc5 Qc8 17. Nxe6 Qxe6 18. Qxc6 a5 19. Qxe6 fxe6 20. Rc6 Re8 21. Bg6 Re7 22. f4 Rb8 23. b3 Rb6 24. Rc8 Rd7 25. Be1 Ra6 26. b4 axb4 27. Bxb4 Rxa2 28. Be7 Rxe7 29. Rxd8+ Ne8 30. Rb1 e5 31. Rbb8

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