Thread: White 21
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Old 2014-02-18, 00:06   #2
cheesehead
 
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"Richard B. Woods"
Aug 2002
Wisconsin USA

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[QUOTE=cheesehead;367181]Now, the response to 21 Nf6+ could be simply 21 ... Kd8[/QUOTE]I mentioned that because now the followup 22 Nd7 is no longer a threat, thus Black need not necessarily capture with 21 ... Bxf6.

Similarly, after 21 Nc5, Black is not necessarily forced to respond with 21 ... Bc8 or Ra8 because of the possible d7 fork, but could play 21 ... Bb7.

Candidate moves for us now include not only [B]21 Nf6+[/B] and [B]21 Nd6+[/B] but also:

[B]21 Ndf2[/B] with the idea of bringing this knight into action at g4 or e4 (not to mention connecting our rooks!). This, however, removes a queen-side defender, so has to be analyzed carefully. [B] 21 ... bxc3 22 bxc3 Rb3[/B]. Since we haven't yet moved our N/e4, our c-pawn is not [I]en prise[/I], so we could answer Black's invasion with [b]23 Rfb1[/b].

If 23 ... Rxb1 24 Rxb1 and suddenly it is we, rather than they, with prospects on the b-file.

If 23 ... Rb8 (not 23 ... Rb7 24 Rxb7 Bxb7 25 Nd6+) 24 Rxb8 Nxb8 25 Rb1 it is also we who have b-file threats.
E.g., 25 ... Nbc6 26 Rb6 Bc8 27 Nd6+ Kd7 (not ... Kd8 28 Bxc6 Nxc6 29 Rxc6) 28 Nxc8 Rxc8 (not ... Nxc8 29 Rxc6 or ... Kxc8 29 Bxc6) 29 Ne4 (threatening 30 Nd6 forking two pawns as well as the rook) Nd8 30 Ra6 Nec6 31 Nd6 Rc7 32 Bxc6+ Rxc6 33 Rxa5.

(to be continued)
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