how to play chess endgames book

276 How TO PLAY CHESS ENDGAMES
B
B
17.13
J.Dueball - M.Hoffmann
Bundesliga 1985/6
true. However, if Black had also considered his
active possibilities, he would surely have seen
the following solution. For a successful defence
it was imperative for Black to activate the rook.
With the pawn sacrifice l...f4! 2 l::[f6 f3 3 l::[xf3
Black could have gained enough time to activate
his rook sufficiently: 3 .. ,l::[h7 (the stalemate
trick 3 ... l::[f7? unfortunately fails to 4 gf6
+-) 4 l::[d3 (4 'fl.f4 l::[hl =) 4 ...'fl.h4+ 5 l::[d4
l::[xd4+ 6 Wxd4 = and the pawn ending is not
winning for White.
21::[f6'fl.e7?
Again Black should have tried to activate his
rook, by 2... Wd7 3 l::[f7 + (3 Wb5 'fl.b8+ 4 Wxa5
@c6) 3 ... @c6 4 l::[a7 f4 5 'fl.a6+ Wb7 6 'fl.b6+
Wc7 7Wd3 ±.
However, 2 ...f4? no longer works, since after
3 l::[xf4 l::[h8 4 'fl.d4 +- Black is short of the
tempo which he wasted on the first move.
3 l::[f8 l::[g7 4 l::[c8+
4 l::[a8?? l::[g4+ 5 Wd3 Wd5 +.
4 ••• Wb7
Or: 4...Wd7 5 l::[a8 +-; 4 ... 1::[c? 5 l::[e8 @d7 6
'fl.a8+-.
5 'fl.e8 l::[g3 6 l::[xe6 l::[c3+ 7 @b5 'flxb3 8 c6+
Wc7 9 l::[e7+ 1-0
Also in the following example Black must
become active:
1 •.. l::[e7?
l...'i.t>eS! 2 llxb7 l::[cJ+ 3 Wd3 l::[xc5 4 'fl.xg7
'fl.xa5 = (Tsesarsky in CBM).
B
17.14
P.Nikolic - M.Narciso Dublan
Ohrid Ech 2001
2 'fl.b6+ @fS 3 c6 bxc6 4 'fl.xa6 'fl.es 5 @b4
llbS+ 6 Wa4 'fl.cs 7 ~7 'i.t>f6 8 a6 hS
8...'fl.c2 9 'i.t>a5 +-.
9 'fl.b7 ~4+ 10 'fl.b4 'fl.cl 11 was 'fl.al+ 12
~4 'fl.el 13 a7 'fl.e814 Wb6 WgS 15 a8~ 'fl.xa8
16 'fl.xa8 Wh417 ~31-0
F) Inappropriate Activity
Sometimes, however, you must just hold firm,
as any action only weakens your own position.
17.15
S.Dolmatov - M.Makarov
Russian Ch (Elista) 2001
Black is securely entrenched and should simply
wait, since White cannot attack any easy