1.Ng4+
Kh1
2.Rh3+
[Thematic try 2.Nxe3!?
b3!
(2...g1Q?
3.Rh3+
Qh2+
4.Rxh2+
Kxh2
5.Nc2
b3
6.Na3=
) 3.Rh3+
Kg1
4.Rg3
Bf1!
(4...a3?
5.Rxg2+
Kh1
6.Nc2!!
a2
7.Na1
Kxg2
8.Nxb3
Bc4
9.Na1
Kf3
10.Kc5=
(10.Ke5?
Ke3=
) ) 5.Rxg2+
Bxg2-+
]
2...Kg1
3.Rxe3!
[Thematic try 3.Nxe3!?
b3!
and Black wins as in line 2.Nxe3 (3...a3?
4.Rg3
Bf1
5.Rxg2+
Bxg2
6.Nc2
a2
7.Na1
Kf2
8.Kc5=
) ] 3...b3
[3...a3
4.Ke5
etc same play]
4.Ke5!
[4.Kc5!?
b2
5.Re1+
Bf1
6.Kb4
Kh1
7.Nf2+
Kh2©
] 4...Kf1
5.Nh2+
Kf2
[5...Kg1
6.Ng4
b2
7.Re1+
same final] 6.Ng4+
Kf1
7.Nh2+
Kg1
8.Ng4
positional draw, or
8...b2
9.Re1+
Bf1
10.Kf4
a3
11.Kg3
a2
12.Nf2
draws.