how to play chess endgames book

ACTIVITY 37
In view of White's space advantage, Black
szives to exchange as many pieces as he can
.m.:: to hold up White's advance in the centre for
;,;s Ieng as possible, until it can be dealt with sati::--fu:torily.
IO l..f4 lZ'lxc3 11 '&xc3 lZ'ld7 12 0-0 lZ'lf6 13
:.fdl 0-0 14 a3 tZ'ldS 15 Wid2 lZ:ixf4 16 Wixf4
»si a»
Black will become active on the queenside
:Zer. unless White weakens himself by playing
17 e4 Abs
The direct 17 .. .fS?! is certainly active but
creates light-squared weaknesses that White
could highlight by 18 'li{(es ~d6 19 dS.
18 ~fl?!
Xow Black takes over the initiative. But it
seems that Black has fully adequate counter-
;!ay after the consistent 18 dS; for example,
18 ... i.cS 19 dxe6 Wie7 20 'l,1Vg5 '&xgS 21 lZ:ixgS
:"xe6 22 lZ:ixe6 .txf2+ 23 @h 1 'f!f7 24 lZ:id8 'f!e7
:S 8xb7 JJ..c6 26 es JJ..xg2+ 27 @xg2 iJ..b6 =.
18 ... ~xfl 19 @xfl c6 20 @g2 a4 21 'l,1Vd2
~ 22 .llacl libs 23 zr.c2 Af6 24 ~e2 Wib6
Slowly but surely, Black activates his entire
army,
25 .l;!dd2 (D)
White's apparent passivity is deceptive. Black
must constantly keep in mind that, in the absence
of Black's major pieces, White's space
advantage might well be converted into an attack
on the kingside. Furthermore the a4-pawn
requires constant protection. It is not a serious
problem for White that his pieces are currently
engaged in almost exclusively passive roles; in
fact this is illusory.
25 ••• g6 26 h4 I.(dS
After 26 ... cS?, with the idea of opening the
position for the bishop, the energy lying dormant
in the white forces would be released with
a single blow: 27 lZ:ie5! ±.
27 'f!c4 '&a6
Black is fully mobilized, but it is not easy to
improve his position or open the position favourably.
So, for instance, 27 ... e5? would rebound
after 28 dxe5 .E!xd2 29 'lfixd2 .l:lxb2 30
.l:lc2 .l:lxc2 31 'li!lxc2 JJ..e7 32 Wixa4, owing to
White's chances on the kingside.
28 l!dc21lb3 ( D)
28 ... e5 29 dxe5 Axe5 30 .!':Ib4 gives White
counterplay.
29 lZ'ld2 !l.b6 30 tZ'lf3 @g7?!
Now White takes over the initiative on the
kingside. Once again 30 ... 'f!b3 was indicated.