how to play chess endgames book

FORTRESSES 205
unbolt the door. As Cheron proved, the following
drawing study by Zakhodiakin is incorrect:
7 ... ~f3 s @gs '1Wh3 9 rs ~f3l01&h4 \Wxrs
l l l&g3 ~e4 12 l&f2 ~d3 13 l&el ~c2 14 l&fl
~d2 15 l&gl ~e2 16 l&hl ~f2 -+
Zugzwang.
In the following game, Svidler succeeded in
overcoming his opponent's defensive plan with
a similar zugzwang idea:
11.37
G.Zakhodiakin
'64', 1929
1 gS+ 'it>h7 2 srt c2 3 ~hS cl \W 4 g6+ 'it>h8
S@g4
Now, according to Zakhodiakin, White can
draw. In fact, though, Black can capture the f-
pawn and White is then forced by zugzwang to
release the black king:
5...~e3 6 f4 (D)
6 l&g3 ~g5+ 7 l&f2 ~f4 8 l&g2 (8 l&e2 '&d4
9 l&fl ~d2 10 l&gl "&e2 -+) 8 ... \\'1/h4 9 l&fl
~h2 10 i.d5 ~g3 11 i.e4 l&g8 -+.
6...'Wd3 7 l&h4
Or: 7 l&g5 '&h3 8 i.d5 ~h6+ 9 @f5 '&h5+
-+; 7 f5 \'¥/e4+ 8 l&g5 ~f3 9 i.e6 ~g3+ 10
'i?i'h5 '&f4-+.
11.38
S.Dvoirys - P.Svidler
Russian Ch (Elista) 1997
Without the black h-pawn, the white position
would be truly impregnable. Unfortunately,
Black can easily capture White's g-pawn, after
which Black's h-pawn can be stopped only by a
piece sacrifice.
l g3!
The only chance. To maintain the incarceration
of the black king, White willingly sacrifices
his knight.
l...~g4 2 tbf4 ~xg3 3 tbxhS '&es+ 4 l&b3
'&xhS 5 c3
5 @b2 makes no difference: 5 ... W/e2 6 l&b3
~d2 7 ~c4 (for 7 c3 '&e2, see the game continuation)
7 ... '&e3+ 8 c3 ~e4 9 sr: and once
more we have reached the game continuation.
5 ... \We2 6 i.c4 ~dl+ 7 l&b2 ~d2+ 8 l&b3
"&cl 9 sn
9 i.d3@g8-+.
9 ... ~bl+ 10 l&c4 (D)
10 l&a3 '&c2 11 c4 ~bl 12 c5 ~c2 (zug-
zwang) -+.
l0 ...\Vbc2 ll l&d4 ~e2 12 l&cS ~d3 13 c4
W/a3 14 l&b6 \Wxb4+ 15 l&xa6 ~cs 16 l&b7