?? ( black to play and win ) 17... b4 ?? [17... Qxa2+ 18. Kxa2
Ra6+ 19. Ba5 Rxa5+ 20. Kb1 Ra1#] 18. a4 Bd7 19. e5 Bxa4 20.
Bc1 [20. bxa4 Qxa4 21. Ne1 Ra6 22. Bc6+ Nxc6 23. Bc3 bxc3 24.
exd6+ Kd7 25. Qg4+ Kxd6 26. Qe6+ fxe6 27. h3 Qa1#] 20... O-O
[20... Nd5 21. Bb2 Nc3+ 22. Bxc3 bxc3 23. exd6+ Kf8 24. Qe7+
Kg8 25. Ng5 Bxb3 ( I hadn't noticed that this stopped the mate on
f7 when playing move 20 ) 26. Qe8+ Bf8 27. Qxf8+ Kxf8 28. Nxh7+
Rxh7 29. cxb3 Rxb3+ 30. Kc1 Qa3+ 31. Kc2 Qb2#] 21. Nd2 Bb5 22.
Bb2 Nf5 23. Nc4 Bxc4 24. dxc4 ( Draw agreed after tea: I had only
15 minutes to make move 40. I did think white might be better ( 2B
+ central control ) although ...Nd4 can't be met by Bxd4. To make
use of the Pg6 I'd have to exchange at least queens +/- BB/RR ) 1/2
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