Botvinnik Semi-Slav, The (Pedersen)
100 THE BOTVINNIK SEMI-SLAV This is the most accurate. After 13 ... cS White can of course transpose to the main line, Chapters 2-4, with 14 dS 0-0-0 IS 0-0 b4, but with 14 dxcS! .i.xcS IS 0-0 is a good alternative: lS ... 0-0-0 16 'ii'e2 gives White a favourable version of Line B22, while lS ... .i.xg2 16 ~xg2 'ii'c6+ 17 f3 0-0-0 18 'ii'e2.i.d4 19 lDe4 lDcs 20 lDxcs 'ii'xcs 21 h4 was much better for White in I.Sokolov-Djukic, Yugoslavia 1991. 140-0 (D) 15 dxe5! ':'xd116 ':'axdl Illescas preferred to recapture with the other rook, viz. 16 ':'fxd1!: a) 16 ... .i.cS 17lDe4 .i.d4 18lDd6+ ~c7 19lDxf7 ':'f8 20 lDd6 .i.xeS 21 .i.e3 'ii'a6 22 lDe4 .i.c8 23 .i.cs ± Vilela-Frey, Havana 1985. b) 16 ... b4 17 lDe4 cS 18 a3! (18 lDd6+ ..txd6 19 ':'xd6 'ii'bS 20 .i.xb7 + 'ii'xb7 21 ':'ad1 'ii'bS 22 .i.e3
MOVE-ORDERS AND VARIOUS DEVIATIONS 101 was clearly better for White in Shabalov-Zamora, Philadelphia 1998. 18 i.f4 c3!? Black attempts to create counterplay by activating his bishop on the a6-fl diagonal but the move has the obvious drawback that it opens lines for White against Black's own king. However, the alternative 18 .. J~h5 is not much better: 19 ltd4 c5 (or 19 .. Jbe5?! 20 i.xe5 'it'xe5 21 ltfd1) 20 ltxc4 i.d5 (20 ... i.a6? 21 ltxc5+ i.xc5 22 ltc1 ± Ermolinsky-Machulsky, USSR 1982) 21 .l:.c2 c4 22 liJd2 c3 23 bxc3 bxc3 24 ltfc1 i.b4 25 liJb1 i.xg2 26 ~xg2 'it'd5+ 27 f3 ±. 19 bxc3 i.a6! 19 ... bxc3 20 liJg5 i.a6 21 liJxf7 i.xfl 22 i.xfl is very good for White. 20 cxb4 i.xb4 21 a3! i.xa3 22 .l:.fel i.d3! 23 liJd6+ i.xd6 24 exd6 ~d7 2SlteS 25 .l:.al!? 'it'b6 26 i.e3 c5 27 .l:.ec1 .l:.c8 28 l:.a3 i.b5 29 ltac3 ~xd6 30 h4 is given by Yermolinsky and Shabalov, and looks more ambitious. I would definitely prefer White. Black cannot hold the c5-pawn and creating counterplay with ... a5 requires some preparation. Meanwhile White has walked his h-pawn closer to promotion. 2S ... i.bS 26 .l:.c1 'it'a4 27 .l:.ecS White has a bind and an edge, Yermolinsky-Kaidanov, USA Ch 1993. 822) 14 ... cS It is important to note that if Black wishes to play the main line after 11 g3, he will reach this position, i.e. after 11 ... i.b7 12 i.g2 'iVb6 13 exf6 0-0-0 140-0 c5. The question is now whether 15 dxc5 represents a greater problem than 15 d5, which transposes to Chapters 2-4. 15 dxcS liJxcs 15 ... i.xc5 16 'it'e2 .l:.dg8 17 i.xb7+ 'ii'xb7 18 liJe4 'ii'd5 19 .l:.fd1 i.d4 20 ltxd4 'ii'xd4 21 ltd 1 'ii'e5 22 'ii'f3! gave White a promising attack in the game Yuferov-Timoshchenko, USSR 1981. 16 'iVe2 i..xg217 ~xg2 i.h6! (D) w 18h4 18 i.xh6 .l:.xh6 19 a4 (19 'ii'f3!?) 19 ... b4 20liJe4 liJxe4 21 'ii'xe4 'ii'b7 22 'ii'xb7+ 'iitxb7 23 l:ac1 l:d4 24 .l:.fd1 ltxd1 25 .l:.xd1 'iitc6 leads to an unclear ending according to Tal. This is one of those endings where, despite being a pawn up, White must take great care owing to Black's queenside pawns. 18 ... i..xgS 19 hxgS 'ili'c6+ 20 f3 .l:.hS!
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100 THE BOTVINNIK SEMI-SLAV<br />
This is the most accurate. After<br />
13 ... cS White can of course transpose<br />
to the main line, Chapters 2-4, with 14<br />
dS 0-0-0 IS 0-0 b4, but with 14 dxcS!<br />
.i.xcS IS 0-0 is a good alternative:<br />
lS ... 0-0-0 16 'ii'e2 gives White a favourable<br />
version of Line B22, while<br />
lS ... .i.xg2 16 ~xg2 'ii'c6+ 17 f3 0-0-0<br />
18 'ii'e2.i.d4 19 lDe4 lDcs 20 lDxcs<br />
'ii'xcs 21 h4 was much better for<br />
White in I.Sokolov-Djukic, Yugoslavia<br />
1991.<br />
140-0 (D)<br />
15 dxe5! ':'xd116 ':'axdl<br />
Illescas preferred to recapture with<br />
the other rook, viz. 16 ':'fxd1!:<br />
a) 16 ... .i.cS 17lDe4 .i.d4 18lDd6+<br />
~c7 19lDxf7 ':'f8 20 lDd6 .i.xeS 21<br />
.i.e3 'ii'a6 22 lDe4 .i.c8 23 .i.cs ± Vilela-Frey,<br />
Havana 1985.<br />
b) 16 ... b4 17 lDe4 cS 18 a3! (18<br />
lDd6+ ..txd6 19 ':'xd6 'ii'bS 20 .i.xb7 +<br />
'ii'xb7 21 ':'ad1 'ii'bS 22 .i.e3
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