What is the best continuation for Black?

Casual Game, https://itsyourturn.com
Analysis of Schulze vs. John Coffey

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

(black to move) 1. f4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe4+ Be7 5. f5 Nf6 6. Qf4 O-O 7. Nf3 d5 8. Nc3 Bd6 9. Qh4 Nb4 10. Kd1 Bxf5 11. Bg5 Bxc2+ 12. Kd2 d4 13. Qxd4 Bg6 14. Bxf6 gxf6 15. Rc1 c5 16. Qg4 Bg3+ 17. Nd4 Bf2 18. e3 cxd4 19. Qxd4 Bxe3+ 20. Kxe3 Re8+

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Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight