1.Kc6!!
[1.Nxh4?
Kxh4
2.Nf3+
Kg3
3.Ng1
(3.Ke4
Kf2
4.Kf4
h5
5.Ng5
g1Q
6.Nh3+
Kg2
7.Nxg1
Kxg1-+
) 3...h5!
4.Ke4
(4.Kd4
Kh2
5.Nf3+
Kh1
6.Kxc4
h4
7.d4
h3
8.d5
h2
9.d6
g1Q
10.Nxg1
hxg1Q-+
) 4...Kf2
5.Nh3+
Kf1
6.Kf4
g1Q
7.Nxg1
Kxg1-+
; 1.Nf3?
h3
2.N5h4
(2.Ke4
h2
3.Ng3+
Kg4
4.Nxh2+
Kxg3
5.Nf3
Kf2-+
6.Kf4
g1Q
7.Nxg1
Kxg1
8.Ke5
h5
9.Kd5
h4
10.Kxc4
h3
11.d4
) 2...h2
3.Nxg2
h1Q
4.Ngh4
und nun z.B. 4...Qf1
5.Ke4
Qf2
6.Kd5
Qe2
7.Kd4
Kg4
8.Kd5
h5
9.Kd4
Qxf3
10.Nxf3
Kxf3-+
; 1.Ke4?
g1Q
2.Nxh4
Qb1+-+
; 1.Ng7+?
Kg5
2.Nf3+
Kg4
(2...Kf4
3.Ng1
Kg4
4.Ne6!
h3
5.Nxh3
Kxh3
6.Nf4+
Kg3
7.Nxg2
Kxg2
8.Kxc4=
) 3.Ne5+
(3.Ng1
h3-+
) 3...Kf4
4.Nh5+
Kf5-+
; 1.Ng3+
hxg3
2.Nf3
Kg4
3.Ke4
h5
4.Ne5+
Kh3
5.Nf3
h4
6.Kf4
(6.Kf5
g1Q
7.Nxg1+
Kg2
8.Ne2
Kf2
9.Nf4
g2
10.Nh3+
Kg3
11.Ng1
h3-+
) 6...g1Q
7.Nxg1+
Kg2
8.Nf3
h3-+
]
1...g1Q
[1...h3
2.Ng3+
Kh4
(2...Kg5
3.Ne2
Kh4
(3...Kf5
4.Nf3
Ke4
5.Neg1=
) 4.Nf3+
Kg4
5.Nh2+
) 3.Ne2
h2
4.Nf3+
Kh3
5.Nxh2!
(5.Neg1+
hxg1Q
6.Nxg1+
Kh2
7.Ne2
g1Q
8.Nxg1
Kxg1-+
) 5...Kxh2
6.Kd5=
g1Q
7.Nxg1
Kxg1
8.Kxc4
h5
9.d4
; 1...Kg5
2.Nf3+
Kxf5
3.Nxh4+
Ke4
4.Nxg2
Kd3
5.Kd5=
]
2.Nxh4!
Qh1+
Black has only this one check, which is the reason that 1.Kc6!! was required in the starting position.
3.Nhf3
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