Botvinnik Semi-Slav, The (Pedersen)
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THE MAIN LINE: 17 a3 21<br />
the open c-file) 24 ... Jtd6 (24 ... tLlxb3?<br />
25'if'c2! +-) 25'if'a2! a6 (25 ... :tdh5 is<br />
a tougher defence, but White is clearly<br />
better in the rook ending following 26<br />
tLlc5+ lhc5 27 llxc5 i.xc5 28 'if'xa5<br />
'if'xa5 29 lha5 Jtxe3 30 fxe3 - Anikaev)<br />
26 Jtc5 ..txc5 27 1:txc5 .:txc5 28<br />
tLlxc5+ 'if'xc5 29'if'xa5 'iixa5 30.:txa5<br />
'it'b6 31 lle5!, and compared to the<br />
previous bracket, White's pawnstructure<br />
is here much better, and he<br />
was able to win comfortably in Anikaev-Sveshnikov,<br />
Volgodonsk 1981.<br />
b3) 22 ... c3 23 'ji'xb5 llxb5 24<br />
tLlxc3! (24 bxc3 b3! is fine for Black)<br />
24 ... bxc3 25 llxc3 'it'd7 26 lla6 tLld8<br />
27 llxa7+ ~e8 28 ':c8 ± Rashkovsky-Timoshchenko,<br />
USSR Ch 1981.<br />
b4) 22 ... tLle5! (D), as introduced<br />
by Tal, is the best defence and the<br />
cause of White's neglect of this line<br />
lately.<br />
w<br />
<strong>The</strong> knight is obviously more active<br />
on e5, and it also avoids the danger of<br />
being caught in trouble on the semiopen<br />
a-file. White has now tried:<br />
b41) 23 i.xa7?! ~b7! 24 Jte3 (24<br />
tLlb6 c3! is very good for Black)<br />
24 ... lld3! and Black is clearly better.<br />
For example:<br />
b41l) 25 tLlb6!? ':xe3! 26 'ji'xe3<br />
Jtc5 27 'ji'e4+ 'it'xb6.<br />
b412) 25 f41lxh2! 26 ~xh2 ':xe3<br />
27 'ji'dllld3 28 'ji'hl + tLlf3+ 29 ~g2<br />
'ji'd5 with a strong attack, Koopmans<br />
Van der Muysenberg, corr. 1992.<br />
b413) 25 lIn Jtd6 26 f4 tLlg4 27<br />
'ji'xg41lxe3 28 :Udl 'ji'c6! and again<br />
Black's attacking chances are to be<br />
preferred, Goldenberg-Meleghegyi,<br />
corr. 1986.<br />
b42) 23 b3 c3 24 tLlxc3 bxc3 25<br />
llxc3+ ~b8 26 'ji'c2 (26 Jtxa7+ ~b7<br />
27 'if'e4 'if'b4! 28 'if'c2 Jtd6 is much<br />
better for Black according to Kasparov,<br />
with the following easy-to-miss<br />
trap in mind: 29 .:ta4? tLlf3+ 30 ':xf3<br />
'ji'el+ 31 ~g2 .:txh2+!) 26 ... Jtd6 27<br />
..txa7+ ~b7 28 b4 tLlc6 29 Jte3 Jte5<br />
30 1:txc6 Jtxal 31 .:tc7+ ~b8 = Kasparov-Tal,<br />
Moscow tt 1983.<br />
19 ... Jtxd5<br />
19 ... llxd5 20 .:tfel! c3 21 bxc3<br />
llxg5 22 cxb4+ ~d8 23 'ji'd4+ ':d5 24<br />
'ji'xa7 tLlc6 25 'ji'b6+ 'ii'xb6 26 tLlxb6<br />
± Dvoirys-Sveshnikov, Sochi 1983.<br />
20 .:tec1 tLlc6<br />
I must confess to not having properly<br />
analysed this before now, and<br />
looking at it afresh, it dawns on me<br />
that something has gone wrong for<br />
Black if his best is to use two tempi<br />
( ... tLlc6-b8-c6) on exchanging White's<br />
d-pawn for his own c-pawn. However,<br />
the alternatives are even worse, and
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