E92: King's Indian: Classical: 6 Be2 e5: 7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7
1.e4
g6
2.d4
Bg7
3.Nf3
d6
4.c4
Nf6
5.Nc3
0-0
6.Be2
e5
7.Be3
Ng4
8.Bg5
f6
9.Bd2
last book move
9...Nh6
[9...exd4!?
might be a viable alternative 10.Nxd4
f5
11.Bxg4
fxg4=
]
10.0-0
Black has a cramped position
10...Nc6
11.dxe5
dxe5
12.h3
White has an active position [12.Nd5
Nf7+/=
]
12...Nf7
[12...Nd4
13.Be3
f5
14.Qd2=
]
13.a3
Controls b4 [13.Nd5!?+/=
has some apparent merit]
13...Nd4=
'the knight is the knight!'
14.c5
Be6
15.Be3
White threatens to win material: Be3xd4 [15.Nxd4
exd4
16.Nd5
Ne5=
]
15...Bb3=/+
Black threatens to win material: Bb3xd1
16.Qd2
White has a very active position
16...Nc2
17.Rac1
Nxe3
18.fxe3
c6
Prevents intrusion on b5
19.Qe1
Bh6
[19...b5
20.cxb6
Qxb6
21.Nd2=/+
]
20.Qf2
[20.Nd1
Qe7=/+
]
20...Qe7
Black threatens to win material: Qe7xc5
21.Nb1
Nd8
22.Nbd2
White threatens to win material: Nd2xb3
22...Bf7
23.Nc4
[23.Nh2
Bg7=/+
]
23...Ne6
[23...Qxc5!?
24.Rc3
Qe7-/+
]
24.b4=
Rfd8
[>=24...a5!?=
and Black could well hope to play on]
25.Nd6
Rf8
26.Bc4
Nd8
27.Nxf7
Nxf7
Opposite coloured bishops appeared
28.Rcd1
Rad8
29.Nh2
Kg7
Black king safety dropped
30.Ng4
White threatens to win material: Ng4xf6
30...Ng5
[30...b5
31.Bd3+/=
]
31.Qh4
[>=31.Rxd8
Qxd8
32.Qc2+/-
]
31...Nxh3+?
[>=31...Nf7+/=
would keep Black alive]
32.gxh3
Bg5
33.Qg3
h5
34.h4
hxg4
[34...Bxh4
35.Qxh4
hxg4
36.Qxg4
Rxd1
37.Rxd1
Rd8+-
]
35.hxg5
f5
[35...fxg5
there is nothing better in the position 36.Qxg4
b6+-
]
36.Rxd8
Rxd8
37.exf5
[37.exf5
Qxg5
38.Qxe5+
Kh6
39.Qh2+
Qh5
40.f6+-
] 1-0
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