Botvinnik Semi-Slav, The (Pedersen)
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BlACK'S 13TH MOVE ALTERNATNES 69<br />
16 ... ttJxf6. Black's position appears<br />
rather loose but White cannot keep his<br />
d-pawn and with its fall White's initiative<br />
decreases significantly, while on<br />
the other hand Black will coordinate<br />
rapidly. A few lines:<br />
a) 17 'ii'e2 .txdS 18 ':dllfi>f8 19<br />
0-0 (19 'ii'e3 ':hS 20 'ii'xcS+ 'ilie7 leads<br />
nowhere) 19 ... ttJxe4 20 .txe4 'ii'gS!<br />
21 f4 'ii'hS 22 .tf3 .txf3 23 ':xf3 c3!?<br />
24 bxc3 bxc3, Razuvaev-Yusupov,<br />
USSR Ch (Moscow) 1983, and now<br />
2S':f2 'it'xe2 261he2 l:tb8 27 l:tcl =.<br />
b) 17 'ii'a4+ lfi>e7! 18 ttJxcS .txd5<br />
19 0-0-0 as 20 l:thel f8 21 .txd5<br />
exdS 22 'ii'c6 l:tc8 23 ':xdS ':xc6 24<br />
':xd8+ cJ;g7 was fine for Black in<br />
Nesis-Kuuskrnaa, corr 1983.<br />
c) 17 ttJxcS .txdS 18 0-0 (18 .txdS<br />
'it'xdS 19 'ii'xdS ttJxdS 20 l:tcl l:tc8 21<br />
':xc4 ttJb6 22 l:tc 1 ttJa4 23 ttJd3<br />
':xcl+ 24 ttJxcl ttJxb2 112-112 Azmaiparashvili-Dolmatov,<br />
USSR Ch 1986)<br />
18 ... .txg2 19 'it>xg2 'ii'b6! (stronger<br />
than the previously played 19 ... l:tc8)<br />
20 'it'a4+? (after 20 'ii'f3, 20 ... l:tc8 21<br />
ttJe4 ttJxe4 22 'ii'xe4 'ii'c6 is equal,<br />
while Black can also try the more ambitious<br />
20 ... ':d8!? 21 ttJe4 ~e7 -<br />
Dvoretsky) 20 ... cJ;e7 21 ttJa6 ttJdS! +<br />
Shneider-Dvoretsky, Frunze 1983.<br />
16 ... ttJxf6<br />
16 ... bxc3?! 17 dxe6 .txg2 18 exd7+<br />
'ii'xd7 19 l:tel+ ~d8 20 bxc3 is dangerous<br />
for Black.<br />
17 'it'c1<br />
17 'ii'a4+ ~f8 18 ttJe2 exdS 19 ttJf4<br />
ttJh5 20 ttJxh5 l:txh5 + Yobava-v.Popov,<br />
St Petersburg 1998.<br />
17 ... l:th51S ttJe2 exdS 19 ttJf4 l:te5<br />
20 b3 'fiIe7 21 bxc4 dxc4 22 .txb7<br />
'ilixb7 23 'fiIxc4 ttJe4<br />
Black has strong counterplay, Tisdall-Ardiansyah,<br />
Jakarta 1997.<br />
02)<br />
15 'it'd2 (D)<br />
Contrary to 15 .tg2, this move has<br />
several purposes. Above all, of course,<br />
it attacks the rook. When Black takes<br />
on f6 with the queen or the rook, the<br />
black knight is deprived of its ideal<br />
square. By covering the el-aS diagonal,<br />
White is also ready to capture the<br />
bS-pawn or play ttJe4 without having<br />
to worry about ... 'ii'a5+, and, additionally,<br />
White can now castle queenside.<br />
Black's two main continuations are<br />
now:<br />
D21: 15 ... l:txf6 70<br />
D22: 15 ... 'it'xf6 71<br />
However, since these obstruct the<br />
knight Black has also experimented<br />
with:
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