A20: English Opening: 1...e5
1.c4
e5
2.g3
Bc5
last book move
3.Bg2
f5
4.Nc3
Nf6
5.d3
Prevents intrusion on e4
5...c6
Secures b5+d5
6.Bg5
[>=6.Nf3
is a viable option 6...d6
7.d4
exd4
8.Nxd4=
]
6...Bxf2+!-/+
Demolishes the pawn shield
7.Kf1
[7.Kxf2
Decoy theme: f2 7...Ng4+
Discovered attack]
7...Bb6
8.e4
h6
9.Bxf6
Qxf6
[9...gxf6?!
10.Qh5+
Ke7
11.exf5=
]
10.Ke1
d6
11.Nf3
f4
12.Rf1
[12.gxf4
Qxf4
13.Qe2
0-0-+
]
12...Bg4
[12...g5!?
might be the shorter path 13.Kd2-+
]
13.h3
Bh5
14.Qc2?
[14.gxf4
Nd7-+
]
14...Nd7
[14...fxg3
and Black can already relax 15.Nd1-+
]
15.Nh4
[15.g4
Bf7-+
]
15...g5
[>=15...0-0-0!?
keeps an even firmer grip 16.Ne2-+
]
16.Nf5
Bg6
17.b4
Bxf5
18.exf5
Qxf5
19.Ne4
Bc7
20.b5
d5
[>=20...0-0-+
Black would have gained the upper hand]
21.cxd5=/+
Ba5+
[>=21...cxd5
and Black could well hope to play on 22.Qxc7
dxe4-/+
]
22.Ke2+/-
Ke7?
[22...0-0
23.Nd6
Qf6
24.Nxb7
e4
25.dxe4
Qd4
26.gxf4
gxf4=
]
23.bxc6
bxc6
24.dxc6
[24.Qxc6?!
Rab8+/-
]
24...Rhc8
[24...Bb6
25.cxd7
Qxd7
26.Rab1+-
]
25.Qa4
g4
[25...Bb6
is not the saving move 26.cxd7
Qxd7
27.Qb4+
Kf7
28.Nd6+
Kf6
29.gxf4
(‹29.Nxc8
Rxc8
30.Rac1
Rxc1
31.Rxc1
Kg7+-
) 29...Rc2+
30.Kd1
Rxg2
31.fxe5+
Kg7
32.Qe4+-
]
26.cxd7
[>=26.hxg4
makes it even easier for White 26...Qxg4+
27.Bf3+-
]
26...f3+
[26...Qxd7
27.Qxa5
Rc2+
28.Ke1
Qd4
29.Qa3+
Ke8
30.Nf6+
Kf7
31.Qb3+
Kxf6
32.Qxc2
Rc8
33.Qxc8
Qxa1+
34.Kd2
Qxa2+
35.Qc2
Qxc2+
36.Kxc2
gxh3
37.Bxh3
a5+-
]
27.Bxf3
gxf3+
28.Rxf3
Qxf3+
29.Kxf3
Rf8+
30.Ke3
[>=30.Ke2
secures the point 30...Bc3
31.Nxc3
Kf7+-
]
30...Bb6+
31.Ke2
Rad8
32.Qb4+
Kxd7
[32...Ke6
doesn't improve anything 33.Qd6+
Kf7
34.Rf1+
Bf2
35.Rxf2+
Kg7
36.Qe7+
Kg6
37.Rxf8
Rxf8
38.Qxf8
h5
39.Qf6+
Kh7
40.Ng5+
Kg8
41.d8Q#
]
33.Qd6+
Kc8
34.Qc6+
[34.Rc1+
Kb7
35.Rc7+
Bxc7
36.Nc5+
Kb8
37.Qa6
Rf2+
38.Kxf2
Rf8+
39.Ke2
Rf2+
40.Kxf2
Bb6
41.Qb7#
]
34...Kb8+-
35.Rb1
Rc8
36.Rxb6+!
Demolition of pawn structure
36...axb6
37.Qxb6+
Ka8
38.Nd6
Rc2+
[38...Rf7
does not improve anything 39.Qa6+
Kb8
40.Qxc8+
Ka7
41.Nxf7
e4
42.Nd6
Kb6
43.Nc4+
Kb5
44.Qb7+
Kc5
45.Qb6+
Kd5
46.Qd6#
]
39.Ke3
Rf3+
[39...Re2+
is no salvation 40.Kxe2
Rf7
41.Nxf7
e4
42.Nd6
exd3+
43.Kxd3
h5
44.Qb7#
]
40.Kxf3
e4+
41.Ke3
Re2+
42.Kxe2
exd3+
43.Kxd3
[43.Kxd3
h5
44.Qb7#
] 1-0