Botvinnik Semi-Slav, The (Pedersen)
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WHITE GAMBITS: 9 exf6!? 133<br />
White has to react to the attack against<br />
what is currently his most powerful<br />
piece, namely the eS-knight. Here is a<br />
short survey of the alternatives:<br />
a) 1l ... ..td6? 12 ttJe4 ..tb4+ 13<br />
~f1 'fie7 14 a3 J.aS 15 ..thS ± Petursson-Isler,<br />
Bern 1992.<br />
b) ll.....tb4 12 ..to ..tb7 13 0-0<br />
.ixc3 14 bxc3 a6 IS 'ue1 'ug8 16 ..thS<br />
'ug7 17 ttJg4 'fie7 18 'fid2 ±. <strong>The</strong> h6-<br />
pawn is under attack, and Black reacted<br />
naturally to this with 18 .. J:tgS,<br />
attacking the bishop on hS, but was<br />
met by the blow 19 l::txe6! 'it'xe6 20<br />
'ue1 in Dietze-SchOn, Bundesliga<br />
198617.<br />
c) 1l.....tg7 12 a4 b4 13 ttJe4 'fIe7<br />
140-00-0 IS f4 ':d8 16 ..txc4 f5 17<br />
ttJcS ':d6 18 'ii'b3 ~h7 19 ':ae1 with<br />
strong pressure, Moskalenko-Shabalov,<br />
USSR 1988.<br />
d) 1l...h3 12 ..thS! (Black has to be<br />
very careful when and where to open<br />
the g-file; in this case it only helps<br />
White's attack) 12 ... hxg2 13 ,Ug1 'uh7<br />
14 ..to ..tb7 IS ttJxbS ..tb4+ 16 ~e2<br />
'ii'e7 17 ':xg2 ~f8 18 'it'c2 'uh8 19<br />
'it'e4 with a substantial advantage to<br />
White, Ivanisevic-N.<strong>Pedersen</strong>, Zagan<br />
jr Wch 1997.<br />
e) 11.. . ..tb7 12..tO a6 13 0-0 (13<br />
a4 ttJd7 14 ttJxd7 rJi>xd7 transposes to<br />
Line C2) 13 ... ttJd7 14 ..txc6 ..txc6 IS<br />
ttJxc6 ..td6 16 f4 'it'fS 17 'flo ttJf6 18<br />
a4 with a slight advantage to White,<br />
Fiister-Egri, Hungary 1945.<br />
12 ttJxc6<br />
<strong>The</strong> only critical approach. Continuing<br />
in sacrificial style with 120-0<br />
ttJxeS 13 dxeS 'fixeS 14 ..tf3 ..tb7 IS<br />
'ue1 is dubious since Black defends<br />
well with lS ...'fid616 ttJxbS 'ilkxdl17<br />
'uexd 1 cxbS 18 ..txb7 'ub8 19 ..tc6+<br />
~e7, as in the game Ree-Hamann,<br />
Netanya 1968.<br />
12 ....ib7 13 ..tf3 a6! (D)<br />
w<br />
<strong>The</strong> key element in Black's defence.<br />
<strong>The</strong> bS-pawn is defended, thereby stabilizing<br />
the queenside. Black can then<br />
continue the completion of his development<br />
with ... J.g7 and ... 0-0, while<br />
ttJe4 by White at any stage can be met<br />
safely by ... 'fIf4 or ... 'fIfS.<br />
14 0-0 J.g7 15 a4 b4 16 ttJe4 'ilkf4<br />
17 'ilkc1 'fic7<br />
Black only needs to avoid playing<br />
17 ... 'fIxc1? 18 ttJd6+ ~f8 19 'uaxc1<br />
..txc6 20 ..txc6 'ua7 21 'uxc4 ±.<br />
18 'it'xc4 ..txc6 19 ':ac1 ':c8!<br />
Simple and strong. 19 ... 0-020 'fIxc6<br />
'ilkxc6 21 'uxc6 (Barlov-Karaklajic,<br />
Yugoslavia 1987) 21...,Ua7 is good<br />
enough for an equal position but nothing<br />
more.<br />
20 'ilkxb4!? ..tf8 21 'fic3
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