What is the best move for Black?

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Analysis of Caissarius (1775) vs. soitgoes317 (1859)

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

(black to move) 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. f4 c5 7. d5 e6 8. Nf3 exd5 9. exd5 Re8+ 10. Be2 Bf5 11. O-O Ne4 12. Nxe4 Bxe4 13. Bd3 Na6 14. Bxe4 Rxe4 15. Qc2 Qe7 16. a3 Re8 17. Bd2 b5 18. cxb5 Nc7 19. Ng5 Re2 20. Rae1 Nxd5 21. Rxe2 Qxe2 22. Re1 Qxb5

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Pawn promotion:
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	- Knight

Click here for 22.. Qxe1+