Botvinnik Semi-Slav, The (Pedersen)
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BLACK'S 13TH MOVE ALTERNATNES 63<br />
which there will be substantial pressure<br />
against the d5-pawn. White must<br />
be careful not to lose this pawn without<br />
compensation, while Black's main<br />
worry is that his position will fall apart<br />
with the disappearance of the b5-pawn.<br />
<strong>The</strong> line was quite popular in the<br />
first half of the 1990s with several<br />
very strong players, e.g. Kramnik,<br />
Ivanchuk and Dreev, adopting it, but<br />
has since then almost disappeared.<br />
However, a revival may be in order.<br />
14.tg2<br />
This is the established main line,<br />
but there have been a few (unsuccessful)<br />
attempts to punish Black's previous<br />
move immediately:<br />
a) 14 .txc4 bxc4 and now White<br />
has the option of going for an attack or<br />
re-establishing material equality:<br />
al) 15 .txf6 'iVxf6 16 'iVa4+ ~d8<br />
170-0-0 e5 18 f4 (18 d6? .txhl 19<br />
'ifa5+ litd7 20 'ifc7+ ~e6 21 d7 'ifd8<br />
and Black survives with a clear material<br />
advantage, but playing for longterm<br />
compensation with 18 'ifxc4 is<br />
probably preferable) 18 ... exf4 19 d6<br />
.txhl 20 'ifa5+ litd7 21 'ifc7+ ~e6 22<br />
d7, Shabalov-Miiller, Pula 1989, and<br />
now 22 ... 'ife5! 23 d8'if l:xd8 24 'ifxd8<br />
.tf3 25 l:d7 litf5 26 l:xf7+ 'ittg6 27<br />
l:xfB 'ife 1 + gives Black a decisive advantage<br />
- Shabalov.<br />
a2) 15 'ifa4+ ~d7 16 .txf6 ~xa4<br />
17 ~xa4 l:h6 (17 ... .txd5 18 .txh8<br />
.txhl 19 .tf6 is better for White due<br />
to Black's weak c-pawns) 18 .tg5<br />
l:g6 19 h4 exd5 20 0-0-0 (20 O-O!?)<br />
20 ... .tc6 21 l:hel + 1:te6 22 ~c3 d4 23<br />
~e2 ~d7 24 ~f4 1:td6 25 ~h3 .tf3 26<br />
l:d2 .tg4 27 ~gl l:a6 =1= Iasnikowski<br />
Bany, Polanica Zdroj 1988.<br />
b) 14 dxe6 (D) and then:<br />
bl) 14 ....txhl 15 'ifxd8+ 1:txd8 16<br />
.txf6 +-.<br />
b2) 14 ...'iVxdl+ 15 l:xdl.txhI16<br />
.txf6 1:th6 17 ~xb5 fxe6 (17 ... l:xf6?<br />
18~c7+~e719l:d7#) 18~c7+'litf7<br />
19 .tg5 1:txh2 20 ~xa8 .txa8 21<br />
.txc4 ±.<br />
b3) 14 ....tg7 with a further branch:<br />
b31) 15 1:tgl 'ifb6! 16 'ife2 'ifxe6<br />
17 ~xb5! 'iVxe2+ 18 .txe2 ~e4! 19<br />
0-0-0 (19 .tf4 is worth considering,<br />
but not 19 ~c7+? litf8 and now 20<br />
.tf4 l:d8 with counterplay, or 20 ~xa8<br />
~xg5! 21 ~c7 .txb222l:dl l:xh223<br />
1:td8+ 'lite7 24 l:b8 .td4 =1= Lobron)<br />
19 ... ~xg5 20 ~d6+ 'litf8 21 ~xb7<br />
1:txh2 =+= Lobron-Kramnik, Dortmund<br />
1993 .<br />
b32) Lobron favours the preliminary<br />
queen exchange 15 'ifxd8+!<br />
1:txd8, and only then 16 1:tgl, and I<br />
agree. With the queens off, White has
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