Diagram:
White: Kc3, Be4, Na3, pawn - h4
Black: Ke8, Ne5, pawn - h2

Kasparyan
"Shakhmaty v SSSR" 1955 
=3rd and 4th prizes
Win

Thanks to his pawn on the h2 square Black has chances of survival, but White has a subtle and
decisive special manoeuvre with his knight. 1.Kd4/i Ng4/ii 2.Bg2!/iii Kf7/iv 3.Ke4/v Nf2+/vi
4.Kf3 h1Q 5.Bxh1 Nxh1/vii 6.Nc2!/viii Kg6 7.Ne1!!/ix Kh5/x 8.Ng2/xi Kg6 9.Nf4+ Kf5 10.h5
Kg5 11.Kg2 wins.
i) Tries: 1.Kd2? Kf7 2.Ke3 Ng6 3.h5 Ne5 4.Kf4 Nd3+ 5.Kg3 Kg7 6.Kxh2 Nf4 7.Bf3 Kh6 draw.
1.Nc2? Kf7 2.Kd4 Ng6 3.h5 Nf4 draw.
ii) In view of Nf7 2.Nc4, when White wins by flicking his knight across to the king's wing,
Black must take energetic action.
iii) This move prepares the white king's march to the f3 square. With the same idea, 2.Bh1? fails
to Nf2. Or if 2.Nc4? Ke7!, after which White has nothing: 3.Bg2 Kf6 4.Ke4 (Nd2,Kg6;) Kg6
5.Kf4 Nf2, or 3.Nd2 Nf2 4.Bg2 Kf6, or 3.Nb6 Nf2 4.Nd5+ Kf7 5.Bf3 h1Q 6.Bxh1 Nxh1.
iv) The black king does his best to reach the h5 square.
v) White in his turn heads to defend his pawn where it stands.
vi) Kg6 4.Kf4 Kh5 5.Kg3, and with his pawn secure, White wins simply. [The win after 5...Nxa1
is endorsed (1996) by the appropriate computer-generated 5-man 'database'.]
vii) To take advantage of the black knight's unfortunate situation White must bring his own into
play. 6.Nc4? suggests itself, but it does not win.
viii) Only this eccentric move does the trick. We shall soon learn why.
ix) The natural 7.Ne3? is refuted by Kh6!! 8.Ng2 Kh5, which draws because it is now White's
turn to move.
x) But now Kh6 8.Kg2 Kh5 9.Nf3, and White wins. This would not have been possible with any
other manoeuvre of White's knight.
xi) Ah! Black is in zugzwang.