how to play chess endgames book

WEAKNESSES 117
8 ... lilc3? 9 ~xc3 bxc3 JO lilb4 ± (Karpov in
lnformator), since the c3-pawn is too far advanced
and is likely to be very weak.
9 ~xd3 @e7 10 @f2 @d6 11 ~d2 tild7 12
~c4 lil7b6 13 @e2 h5 14 @d3 @c6 15 g3 g6
(DJ
6.05
A.Karpov - U.Andersson
Skellefted 1989
l .. .'&c6?
An amazing error of judgement for an endgame
virtuoso of Andersson's stature. Presumably
he thought that, with only one weakness,
he would be able lo hold the position. In contrast,
1... bxa3 2 bxa3 '&c6 3 ~xc6 i.xc6 offered
very good drawing chances.
2 '&xc6 i.xc6 3 axb4 axb4
A single weakness is usually not much of a
problem, provided that it can be comfortably defended.
Hence the great importance of the principle
of the second weakness, which we shall
consider in Section E of this chapter. But sometimes
even a single weakness can prove fatal.
4 tilf4 lilb6 5 b3 tilfd5 6 lild3 i.bS 7 ~c2
@f88~el (DJ
Now White reaps the harvest:
16 ~xd5+ tilxdS 17 @c4 f5 18 h3 @b6 19
~xb4 lile3+ 20 @d3 tild5 21 ~d2 @b5 22 g4
tilf6 23 ~g5 tildS 24 gxh5 gxh5 25 ~d2 tilf6
26@e3 tild5+ 27 @f2 lile7 (D)
8 ... i.xd3
In view of the strong light-squared blockade
it is now hard for White to breach Black's
defences. Here too the principle of the second
weakness retains its importance. After Karpov's
next move it should definitely be drawn;
however, it remains doubtful whether he had a
significantly better continuation at this point.
28 ~g5?! lilc6