how to play chess endgames book

256 HOW TO PLAY CHESS ENDGAMES
5 ... nbl 6 c3 g5 7 hxg6+ hxg6 8 ©f4 nd1
(D)
nrt 24 nxb5 a2 25 na5 ©e7 26 ~a2 nr6+ 27
@g5 l-O
B2b) Converting the Advantage of
the Exchange
Rooks need open lines, as fish need water. Generally
the emptier the board, the greater their
power.
At this point Fine's rule of thumb comes into
play:
9@e3!?
Nunn would now like to prey upon the
queenside with his king or rook.
9 ... ©f6?
Playing into White's hands. 9 ... @e6! was
more tenacious, as after 10 !l.d2 _g[e 1 + 11 @d4,
I l...@d6 denies White access to the queenside.
10 ~2 _g[fl 11 nd5 c6 12 ~5 nb1 13
nxc6+ ©f714 @f4 ~b215@g5 nb3 (D)
15.14
G.Kasparov - L.Portisch
Debrecen Echt 1992
In order to exploit his material advantage,
Black must strive to find a favourable way to
open lines for his rooks on the kingside.
l ... nbS?!
l...g6 2 g4 (2 f6 ngs +) 2 gxf5 3 gxf5 ngs
+ (Portisch in Informatort; I @e7!? 2 g3 g6 is
possibly even more accurate.
2g4(D)
16 f4!
Good technique! After 16 ~7+? ©e6 17
@xg6 cad6 Black would gain unnecessary counterplay.
16 ... nxa3 17 nc7+ ©e6 18 ©xg6 @d6 19
ncs @d7 20 nc5 nb3 21 f5 a3 22 f6 nb1 23 f7