Botvinnik Semi-Slav, The (Pedersen)
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82 THE BOTVINNIK SEMI-SLAV<br />
w<br />
B<br />
untested, 14 ... c5 leads to an inferior<br />
position for Black: 15 .tg2 cxd4 16<br />
.txd4 .tc5 17 O-O! lDxf6 18 .txc5<br />
.l:txdl 19 .l:taxdl and White had more<br />
than adequate compensation in Savchenko-Novikov,<br />
Sibenik 1989, especially<br />
as Black cannot re-deploy his<br />
bishop with 19 ... .tb7? due to 20.tb4<br />
'iWb6 21 :'d6!) 15 f4 c5! 16 fxe5 cxd4<br />
17 .txd4 .tb7 18 .l:tgl .l:txh2 19 .te2<br />
'iWc7!. A critical position has arisen, in<br />
which Black seems to have enough<br />
counterplay; Black's last move prepares<br />
... .tc5, which if played immediately<br />
would have been met by .txc5!.<br />
Now it is not easy for White to break<br />
the pin on the d-file. After 20 .l:tcl,<br />
which occurred in Komljenovi6-Kaidanov,<br />
Andorra 1991, according to<br />
Kaidanov Black should first safeguard<br />
the b-pawn with 20 ... a6! and after 21<br />
b4! Black's bishop should enter via<br />
another route, viz. 21.. . .th6 22 .l:tc2<br />
i.e3 23 .txe3 .l:txdl + followed by<br />
... 'iWxe5 with unclear play.<br />
b) 14 i.g2lDc5 150-0 lDb3 16 'ii'f3<br />
(D) and then:<br />
bl) 16 ... lDxd4?! has not been given<br />
proper attention but is good for White.<br />
17 'ii'e4 i.b7 (17 ... 'iWb6 18 :'adl c5 19<br />
i.e3 i.b7 20 'ii'xb7+ 'ii'xb7 21 .txb7+<br />
~xb7 22lDxb5 is good for White) 18<br />
.l:tadl 'ii'b6 (18 ... .l:td7, intending ... c5,<br />
allows a promising queen sacrifice: 19<br />
.l:txd4 c5 20 .l:txd7 .txe4 21 :'fdl<br />
.txg2 22 'ittxg2 'iWb6 23 .l:txf7 'iWc6+<br />
24 f3 ±) 19 .te3 .tc5 20 'tWe5 .l:td7?!<br />
(20 ... lDb3 might be a better try, even<br />
though 21lDe4 .txe3 22 fxe3 'iWxe3+<br />
23 ~hllooks very strong for White)<br />
21 .l:td2 .l:thd8 22l:Hdl, when Black is<br />
more or less in zugzwang and in Borisenko-Gusev,<br />
USSR 1950 felt obliged<br />
to try 22 ... lDf3+ 23 .txf3 .txe3, when<br />
White has a promising choice between<br />
24 'ii'xe3 'ii'xe3 25 .l:txd7 'ilf'xf3 26<br />
.l:txd8+ rl;c7 27 .l:tld7+ ~b6 28 .l:tb8<br />
and the game continuation 24 .l:txd7<br />
i.xf2+ 25 ~g2 .l:txd7 26 :'xd7 ~xd7<br />
27~h5.<br />
b2) 16 ... i.b7 17 .l:tadl and now:<br />
b21) 17 ... b4 18lDe4 bxa3 19 bxa3<br />
i.xa3 20 i.e3 (better than 20 h4 .tb4<br />
21 i.e3 'iWb5 22 lDc5 a5! 23 lDxb7
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