1.Nc3
e5
2.Nf3
d6
3.d4
Nc6
4.d5
Nce7
5.e4
f5
6.Bg5
h6
7.Bh4
g5
8.Nxe5
dxe5
[ 8...gxh4
9.Qh5+
Ng6
10.Qxg6+
Ke7
11.Qf7#
]
9.Qh5+
Kd7
10.Bxg5
Bg7
11.Bb5+
Kd6
12.Be3
f4
13.Bxf4
exf4
14.e5+
Kc5
[ 14...Bxe5
15.Ne4+
Kxd5
16.Qf7+
Be6
( 16...Kxe4
17.f3+
Ke3
18.Qb3+
Kd4
19.Qc4+
Ke3
20.Qe4#
) 17.0-0-0+
Bd4
18.Rxd4+
Ke5
( 18...Kxd4
19.Qxe6
mate next.) 19.Qg7+
Kf5
there are no less than three different mates-in-two in this position. 20.Ng3+
This is the prettiest. 20...fxg3
21.Bd3#
]
15.Na4+
Kxb5
16.Qe2+
Kxa4
17.Qc4+
Ka5
18.b4+
Ka4
19.Qb3+
Kb5
20.a4+
Kb6
21.a5+
Kb5
22.c4+
Ka6
23.b5#
*