how to play chess endgames book

WEAKNESSES 131
To conclude, here is another especially impressive
example:
6.23
J.Hajtun - L.Szabo
Hungarian Ch (Budapest) 1955
Rozentalis opens a second front on the queenside
and, slowly but surely, penetrates in that
sector:
1 ~a3!! ~xa3?! 2 bxa3 !td8 3 !tb2 !tc7 4
!tbS !tdd7 S@f2 g6 6 @e3@g77 !tt'bl @f78
l!!cS @e79 .l'.!bbS !txcS?
Playing into White's hands. 9 ...@d8 was indicated.
10 dxcS!
Making the d4-square available to his king.
10 ... @dS ll a6
Now Black's ramparts are finally hreached.
11 ...@cS
11...bxa612lla5 d4+ 13 cxd4c314c6c215
!tc5 +-.
12 !tb6!! .i.g8
12 ... axb6 13 a7 +-.
13 m6 l!!d814@d4 bxa6 15 l!!d6 1-0
F) The Exploitability of a
Weakness
A weakness that cannot be exploited is not a
weakness.
In the following diagram, White even benefits
in a certain sense from his doubled and isolated
pawns, since Black can only make progress by
exchanging pawns.
1 !tb7 11a5 2 l!!c7 @g7 3 !tb7 !tdS 4 !tc7
@f8 S nb7 @e8 6 l!!a7 l!!d7 7 !ta8+ <;;e7 8
!tal @f6 9 !taS !tdS 10 !ta7 es 11 fxeS+
!txeS 12 !ta6+ @fS 13 !ta3 !tdS 14 !ta4 gS
15 hxgS <;;>xgS 16 !tb4 !td3 17 l!!bS+ rs 18
l!!b41/z-1/z
Sometimes apparently weak doubled pawns
can even prove to be very powerful if the blockade
cannot be maintained.
B
6.24
V.lvanchuk -V.Anand
Linares (I) 1992
l ••• hS!
This undermines the white structure and so
weakens the blockading forces.
211gl hxg4 3 fxg4