Black to play and mate in 8

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Analysis of Speedyplot (1909) vs. john2001plus (1883)

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

(black to move) 1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. dxc5 Bxc5 6. Nb3 Bb6 7. Bd3 Nc6 8. Nf3 Nf6 9. O-O O-O 10. Bg5 h6 11. Bh4 g5 12. Bg3 Ne4 13. Bxe4 dxe4 14. Ne5 Qf6 15. Nxc6 bxc6 16. Qe2 Re8 17. Qc4 a5 18. c3 Ba6 19. Qa4 Bb5 20. Qa3 Bxf1 21. Kxf1 e3 22. Kg1 exf2+ 23. Kf1 Qe6 24. Nd4 Bxd4 25. Qf8+ Kxf8 26. Bd6+ Kg8 27. g4 Qe2+ 28. Kg2 f1=Q+ 29. Kg3 Bf2#

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Pawn promotion:
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Click here for 25. Bxf2.