1.Bf3!
[Try : 1.Bh1?
Re8
2.a8Q
Rxa8
3.Bxa8
c2
4.Nf3+
Kg3
5.Nd4
c1N!=
; Try : 1.Nf3+?
Rxf3
2.Bxf3
c2
3.a8Q
c1Q
4.Qa2+
Kg3
5.Qg2+
Kf4
6.Qg4+
Ke5!=
] 1...c2
2.a8Q
c1Q
3.Qa2+
Kg3
4.Qg2+
Kf4
5.Nh3+
Ke5
6.Qg5+
Kd6
7.Qd8+
Ke6
[7...Ke5
8.Qe7+
Kf5
9.Qg5+
Ke6
10.Nf4+
Kd7
11.Qg7+
Re7
(11...Kd8
12.Qf6+
) 12.Qd4+
Kc7
13.Nd5+
Kb8
14.Nxe7
Qb1+
15.Ka3
] 8.Nf4+
Kf5
9.Qf8+
Kg5
[Main 9...Ke5
10.Ng6+
Ke6
(10...Kd4
11.Qd6#
/d8++) 11.Bg4+!
(Try : 11.Qe7+?
Kf5
12.Nxh4+
Kf4
13.Qd6+
Kg5
14.Qg3+
Kf6
15.Qg6+
Ke5
16.Qg5+
Ke6
17.Bg4+
Kd6
(Not 7...Kf7?
18.Qg6+
Kf8
19.Qh6+
Ke8
20.Qh8+
Kf7
21.Qh7+
Kf6
22.Qh6+
Ke5
23.Nf3+
Rxf3
24.Qxc1+-
) 18.Nf5+
(18.Qd8+
Ke5=
) 18...Kc7
19.Qf4+
Kb7
20.Qxe3
(20.Nxe3
Qb2#
) 20...Qc4+!=
) 11...Kd5
12.Nf4+
Kd4
13.Qf6+
Ke4
14.Qf5+
(14.Bf3+?
Rxf3
15.Qe6+
Kxf4
16.Qh6+
Kg4
17.Qxc1
h3
18.Qg1+
Rg3=
) 14...Kd4
15.Qd5#
] 10.Nh3+
Kg6
11.Bh5+!
Kxh5
12.Qf5+
Kh6
13.Qf6+
Kh7
[13...Kh5
14.Qg5#
] 14.Ng5++-