Botvinnik Semi-Slav, The (Pedersen)
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104 THE BOTVINNIK SEMI-SLA V<br />
continuation 16 ... 0-0-0 17 .l:.b 1 is covered<br />
in Chapter 4, while 16 ... e5 leads<br />
to the same kind of problems with<br />
White dominating the hl-a8 diagonal<br />
after 17 .l:.bl 'ifa6 18 .l:hb7! 'ifxb7 19<br />
d6, although perhaps this is not that<br />
clear; Babula-Lukacs, Zalakaros 1998<br />
continued 19 ... 'ifc8 20 f4 e4! 21 .l:r.el<br />
.l:r.b8 22 ~xe4 ~d8 23 'iWd5 with a totally<br />
unclear position; White collects<br />
lots of pawns for the rook while still<br />
maintaining an attack) 17 dxe6 fxe6<br />
18 'iWbl!? 0-0-0 (18 ... ~xg2 19 'ifg6+<br />
~d8 20 ~xg2 'ifc6+ 21 f3 .l:r.b8 22<br />
.l:r.f2 gives White an edge according to<br />
Se.Ivanov) 19 ~xb7+ 'iWxb7 20 .l:r.el<br />
~h6 21 'iWxb7+ ~xb7 22 f4 with compensation,<br />
Sakaev-Se.Ivanov, Russia<br />
1995.<br />
15 0-0 b4 16 tiJa4<br />
For 16 :rbI, see Chapter 4.<br />
16 ... 'iWb5<br />
<strong>The</strong> two alternatives, 16 ... 'ifa6 and<br />
16 ... 'ifd6, were examined in Chapter 3.<br />
17 dxe6<br />
17 a3 is the Main Line (Chapter 2).<br />
<strong>The</strong> text-move is also very interesting,<br />
but there is not much new to report<br />
here since Savchenko's spectacular<br />
21.. . .l:.d4! turned the general perception<br />
in Black's favour.<br />
17 ... ~xg218 ~xg2<br />
18 e7?! is a familiar interpolation<br />
but it is not good here: 18 ... ~xfl 19<br />
exd8'if+ 'iitxd8 20 'iitxfl 'ifc6! 21 'iitgl<br />
~d6 22 f4 .l:r.e8 23 'iitf2 'iitc7 and Black<br />
was very active in Ubilava-Timoshchenko,<br />
USSR Ch 1981.<br />
18 .. :i¥c6+ 19 f3 'iWxe6 20 'iWc2<br />
Defending the second rank without<br />
weakening the kingside; the game<br />
Haba-Shabalov, Oberwart 1992 continued<br />
20 h4 ~h6 21 'ifcl ~xg5 22<br />
'ifxg5 .l:r.hg8 23 'iff4 'ifc6 24 b3 c3 and<br />
Black was better due to his reasonable<br />
attacking chances and the out-of-play<br />
knight on a4 .<br />
20 ... tiJe5 21.l:r.ael.l:.d4! (D)<br />
21...'iWh3+ probably also holds up<br />
well, but this is the most energetic.<br />
<strong>The</strong> rook serves multiple purposes<br />
from d4, including defending c4, intending<br />
to bring the queen behind it,<br />
and in some lines sacrificing itself in<br />
order to demolish White's kingside<br />
shelter.<br />
22 h4 ~d6 23 .l:.e2 (D)<br />
White logically attempts to double<br />
rooks on the e-file. Other approaches<br />
have failed:<br />
a) 23 ~e3?! is natural, but one<br />
point of Black's 21st move is revealed<br />
after 23 ... :rdxh4! 24 gxh4 .l:r.xh4 25<br />
~gl tiJd3! 26 'iWg2 ~h2+ 27 'ifxh2<br />
.l:.xh2 28 ~xh2 tiJxel 29 .l:.xel 'ifxf6
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