Black to play and win.

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john2001plus (1769) vs. tuoheng (1692)

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

(black to move) 1. Nf3 Nc6 2. d4 d5 3. c4 e6 4. Nc3 Nf6 5. Bg5 Be7 6. e3 O-O 7. Bd3 h6 8. Bh4 Nb4 9. Be2 a5 10. a3 Nc6 11. O-O Bd7 12. Rc1 Rc8 13. Bxf6 Bxf6 14. cxd5 exd5 15. Nxd5 Be6 16. Nxf6+ Qxf6 17. Nd2 Rfd8 18. Ne4 Qg6 19. Nc5 Bh3 20. Bf3 Ne5 21. Be4 f5 22. Qb3+ Kh8 23. Ne6 fxe4 24. Nf4 Nf3+ 25. Kh1 Bxg2+ 26. Nxg2 Qh5 27. h4 Qg4 28. Nf4 Qxh4+ 29. Kg2 Qh2#

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Options:
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Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight