1.d4
Nf6
2.c4
c5
3.d5
b5
The Benko Gambit
4.cxb5
a6
5.e3
An interesting approach. Rather than take again on a6 and permit Ba6xf1 when white moves the e-pawn, white insists on exchanging the light squared bishops without giving up the right to castle. But there is a price. e3-e4 costs a tempo (rather than e2-e4 in one move).
5...axb5
Enticing the Bf1-b5 and then counter-attacking the white center.
6.Bxb5
Bb7
Two attacks on the d5-pawn, and e3-e4 cannot be played.
7.Nc3
Two defences.
7...Qa5
Pinning the defender. It's once again 2 on 1
8.Bd2
Defending the d-pawn in a somewhat complex manner. Nc3xd5 would also attack the Qa5
8...Qb6
And, thanks to the Bd2 blocking the white Qd1, it's once again 2 on 1
9.Qb3
Again,a second defender
9...e6
Just like Nimzovitch. And only then attack it with a pawn. dxe6 meets Bxg2 (thanks to the light squared B on b5)
10.e4
Diagram Three attacks, three defenses
10...Nxe4
Taking advantage of the g2-weakness.
11.Nxe4
Bxd5
The Bb5, Ne4 and the Qb3 are all under attack!
12.Qd3
Moving the queen and still defending the Bb5 and Ne4
12...f5
Forcing the Ne4 to move
13.Ng3
Bxg2
The logical follow-up. Black will win the exchange of h1. Does white have enough compensation?
14.a4
Freeing the Qd3 from its defense of the Bb5
14...Qb7
There's no rush to capture on h1. Be7 is another good move, developing the kingside. [14...Bxh1
15.Nxh1
]
15.f3
Be7
16.N1e2
Bxh1
last chance to take
17.Nxh1
0-0
18.0-0-0
Seeking activity against the black d-pawn
18...Nc6
To an active square, watching b4, d4, and e5, and preventing a4-a5
19.Kb1
perhaps Bc3 first to stop Ne5-f3
19...Ne5
20.Qe3
Nxf3
breaking through. The threat is Bg5
21.Bc3
Bg5
22.Qxc5
very dangerous, opening lines against the white queenside
22...Qe4+
taking the beautiful entry square
23.Rd3
Rfc8
[23...Qxe2
24.Ng3
Qg2
25.Bxd7~~
]
24.Qf2
Ne5
25.Qd4
Qxe2
seeking simplification
26.Qxe5?
[26.Ng3!
Qxh2
27.Qxe5
Bf6
28.Qd6~~
]
26...Qf1+
[26...Qxe5
27.Bxe5
Rc1+
28.Ka2
Rc5
winning a piece]
27.Ka2
Bf6
28.Qxf6!
Rxa4+
[28...gxf6
29.Rg3+
Kf7
30.Bxf1
]
29.Kb3
[29.Bxa4
gxf6
]
29...Ra3+!
30.Kxa3?
[30.Kb4
Raxc3
31.Qxg7+
Kxg7
32.Rxd7+
Kh6
33.Bxf1
Rc1
34.Ng3
f4
35.Ba6
fxg3-+
]
30...Qa1+
31.Kb4
gxf6
32.Ng3
black has a huge advantage
32...Qg1
33.Bd4
Qe1+
34.Bc3
Qg1
35.Bd4
Qf1
36.Bc3
Qf2
37.Bd4
Qf4
38.Nh5
Qd6+
39.Kb3
Rb8
40.Ka4
Ra8+
41.Kb3
Ra5
42.Bc4
Qc6
43.Nxf6+
Kf7
44.Rh3
Ra1
45.Rxh7+
Kg6
46.Be2
Qa4+
47.Kc3
Rc1+
48.Kd3
Qc2+
49.Ke3
Re1
50.Rg7+
Kxg7
0-1