What is the best continuation for White?

ICC tourney 1350 (12 3), Internet Chess Club
Analysis of john2001plus (1605) vs. tangent (1931)

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

(white to move) 1. Nf3 g6 2. d4 Bg7 3. c4 f5 4. e4 fxe4 5. Ng5 c5 6. dxc5 Nf6 7. Nc3 Qa5 8. Bd2 Qxc5 9. Ngxe4 Qe5 10. Bd3 O-O 11. O-O Nc6 12. Re1 Qc7 13. Rc1 b6 14. Nd5 Qb8 15. Nexf6+ exf6 16. Bf4 Ne5 17. Ne7+ Kh8 18. Nxg6+ hxg6 19. Bxg6 Bh6 20. Rxe5 fxe5 21. Bxh6 Rg8 22. Qh5 Rg7 23. Bxg7+ Kxg7 24. Qh7+ Kf6 25. Qf7+ Kg5 26. h4+ Kxh4 27. Qf5

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