A40: Unusual replies to 1 d4
1.c4
g6
2.d4
Bg7
3.e4
Nc6
4.Nf3
e5
5.Be3
[5.Bg5
Nge7
6.dxe5
Nxe5
7.Nxe5
Bxe5
8.Nc3
h6
9.Be3
f5
10.Qd2
Bg7
11.Bd3
d6
12.0-0
Be6
13.Rfe1
Qd7
14.Nb5
fxe4
15.Bxe4
Bxc4
16.Bd4
Be5
17.Bxb7
Rb8
18.Na3
Bxa2
19.Bf3
Bf7
Kjeldsen,J (2415)-Poley,V (2410)/Randers 1996/EXT 98/0-1 (39)]
5...d6
6.d5
Nce7
7.Bd3N
Black is behind in developement [7.Nfd2
f5
(7...c5
8.Nc3
f5
9.g3
Nf6
10.Bg2
0-0
11.f4
exf4
12.Bxf4
Nh5
13.0-0
Nxf4
14.Rxf4
Be5
15.Rf1
f4
16.Nf3
fxg3
17.Nxe5
gxh2+
18.Kxh2
dxe5
19.Qd2
Bd7
20.Qg5
Rxf1
21.Rxf1
Nc6
22.Qg3
Pacher,M (2165)-Petran,P (2395)/Bratislava 2004/EXT 2005/0-1 (41)) 8.f3
Nf6
(8...f4
9.Bf2
Bf6
10.Nc3
g5
11.g3
Bd7
12.gxf4
exf4
13.Qb3
h5
14.0-0-0
h4
15.Be2
Nh6
16.Rdg1
Nf7
17.Nd1
a5
18.Qxb7
Rb8
19.Qa7
c5
20.Bxc5
dxc5
21.Qxc5
Be5
22.Nb1
Bd6
23.Qd4
Beck,S-Thonig,M/Regensburg 1997/EXT 2001/0-1 (43)) 9.Be2
f4
10.Bf2
0-0
11.Nc3
Rf7
12.Qc2
a6
13.c5
g5
14.cxd6
cxd6
15.a4
Ng6
16.Nc4
Bf8
17.a5
h5
18.Na4
g4
19.Nab6
Rb8
20.Ra3
h4
21.Nxc8
Qxc8
Inumerable,F-Pinto,M (2195)/Chicago 1997/EXT 2000/0-1 (32)]
7...Nh6
8.c5
The thematic attack [8.Qb3
0-0+/=
]
8...0-0
[8...Ng4!?
9.cxd6
Qxd6=
(9...Nxe3?
leads to nothing 10.dxe7
Nxg2+
11.Kf1
Qxe7
12.Kxg2+-
) ]
9.cxd6+/=
cxd6
10.Qd2
[10.Nc3!?+/=
might be a viable alternative]
10...Ng4=
Black has a cramped position
11.0-0
f5
Black undermines the pawn chain [11...Nxe3
12.Qxe3
f5
13.Nbd2=
]
12.Bg5
f4
This push gains space [12...fxe4
13.Bxe4
Nf6
14.Nc3=
]
13.Bxe7
[13.Rc1
h6
14.Bxe7
Qxe7+/=
]
13...Qxe7=
Black has the pair of bishops
14.Nc3
g5
15.Rac1
Nxh2??
[>=15...Nh6=
is the best chance]
16.Nxh2+-
[Less advisable is 16.Kxh2
g4
17.Rh1
gxf3
18.gxf3
Rf6=/+
]
16...g4
17.Be2??
White threats to win material: Be2xg4. throws away the game [>=17.Nb5
and White can celebrate victory 17...f3
18.g3+-
]
17...Qh4+/-
White has a decisive advantage
18.Nb5
[>=18.Qd1!?
Rf6
19.Nxg4
(19.Bxg4??
Rh6
20.Bh3
Bxh3-+
) 19...Bxg4
20.Bxg4+/=
]
18...f3=
19.Bxf3??
[>=19.Rxc8
had to be tried to avoid defeat 19...Raxc8
20.Nxd6=
(20.gxf3?
doesn't solve anything 20...Bh6
21.Qd3
Bf4
22.Nxg4
h5-+
) ]
19...gxf3-+
20.Nxf3?
[20.Rc3
fxg2
21.Kxg2-+
]
20...Rxf3
Demolishes the pawn shield
21.Nxd6
[21.gxf3
Bh6
]
21...Bh6
22.Rxc8+
[22.Qxh6
cannot undo what has already been done 22...Qxh6
23.Nxc8
Rf4
24.Ne7+
Kh8-+
]
22...Rxc8
23.Qe2
[23.Qxh6
otherwise it's curtains at once 23...Qxh6
24.Nxc8-+
]
23...Bf4
24.g3
Bxg3!
Demolition of pawn structure
25.fxg3
[25.Kg2
does not improve anything 25...Bf4
26.Rh1
Rg3+
27.fxg3
Qxg3+
28.Kf1
Rc1+
29.Qd1
Qf3+
30.Kg1
Rxd1#
]
25...Rxg3+
Decoy to g3. .
26.Kf2
[26.Qg2
does not help much 26...Rxg2+
27.Kxg2
Rc2+
28.Rf2
Rxf2+
29.Kg1
Qh2#
]
26...Rf8+
[26...Qf4+
27.Ke1
Rc1+
28.Qd1
Qe3#
]
27.Ke1-+
Re3+
[27...Rg1+
28.Kd1
Rgxf1+
29.Kc2
R8f2
30.Kc3
Rxe2
31.Nc4
Qxe4
32.Kb4
Rxb2+
33.Ka3
Qd3+
34.Ka4
Qxc4+
35.Ka5
Rxa2#
]
28.Rf2
Qxf2+
29.Kd1
[29.Kd2
hardly improves anything 29...Qxe2+
30.Kc1
Rf1#
]
29...Qxe2+
30.Kc1
Rf1#
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