how to play chess endgames book

52 How TO PU.Y CHESS ENDGAMES
tub3 .l::tb6 25 tud4 tub l 26 tuc2 b3 27 axb3
.l::txb3 28 tud4 .l::tb6 29 tuf5 tud2 30 .l::td4 tub3
31 .Eid5 ± and owing to the misplaced black
knight White has excellent winning chances.
22 .l::tb7 .l::txa2 23 .l::txb4 .l::tc2 24 .l::tb6 @h7
24 ... @g7 25 tud6 +-.
25 .l::tb7 @g8 26 tud6 .l::tc6 27 tuxf7 tuc4 28
.l::td7 .l::tf6 29 .l::td4 i-o
Black resigned in view of 29 ... tuxe3 30
tuxh6+ .l::txh6 31 fxe3 +-.
82) Pawn Breakthrough
Another typical way to create a passed pawn is
by a pawn breakthrough. This is a tactical operation
in which an enemy pawn is diverted to leave
the way open for a friendly pawn to run on.
Since a pawn breakthrough is always based on
the sacrifice of one or more of one's own pawns,
it generally leads to a considerable sharpening of
the struggle and requires accurate and concrete
calculation.
We start with a simple but classic example:
2.19
A.Shikova - E.Kalmukova
Sofia 1971
Owing to the weakened black pawn-structure,
as well as her own active king, here too
White can win with the help of a breakthrough.
But first she must carry out a few preparatory
measures:
1 b4 @e7 2 bS 'it>f7 3 gS fxgS 4@xg5 @gl 5
h3@f7
5 ... h6+ 6 @f5 @f7 7 h4 @g7 8 @e6 +-.
6 @h6 @g8 7 h4 @h8 (D)
2.18
J.Capablanca - Ed.Lasker
London 1913
1 h6!
Preparing the decisive breakthrough with 2
g6. The immediate l g6?? would be premature,
however, since after l...hxg6 2 h6 @f6-+ Black
even wins.
l. .. @e6 2 g6! hxg6 3 h7 1-0
The following example is more complicated:
8c5!
At this precise moment, just when the black
king is situated as far as possible from the
queenside, the vital breakthrough works.
8 dxcS
8 @g8 9 c6 bxc6 IO dxc6 d5 11 a5 bxa5 12
b6 cxb6 13 c7 +-.
9 as bxaS