What is the best move for White?

ICC tourney 1217 (12 3), Internet Chess Club
Analysis of darvid (1461) vs. yoshi (1690)

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

(white to move) 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. d4 g4 6. Ng5 f5 7. e4 h6 8. Nh3 gxh3 9. Qh5+ Kf8 10. e5 hxg2 11. Bxg2 Be7 12. c3 Bg5 13. Nd2 Nc6 14. O-O Be3+ 15. Kh1 Qg5 16. Qf3 Bxd2 17. Bxd2 Qxd2 18. Rae1 Bd7 19. e6 Be8 20. Qxf5+ Kg7 21. Be4 Nce7 22. Qf8#

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Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight