Sunday, October 26, 2014

Can black hold in the Teichmann Exchange ?

My stats indicate I get the Teichmann Exchange most often. I dont know why, because the white attack is simple and fast. But the defender thinks that, by exchanging the knight on f3, he is one piece closer to a winning end game. Things are not so simple however as white has nice attacking chances.

However, there is one line that always bothered me :

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4 6.h3 Bxf3 7.Qxf3 c6 8.g4 Qxd4
Blacks grab another pawn : "a pawn is a pawn"

9.Be3 Qb4
moving away from the file where it comes under attack of the rook

10.0-0-0 (diagram)

10...e6 is now the best defending move, even if 10...Nbd7 has to be respected.

10...e6 11.g5 Nd5 12.Bd4 (diagram)

White has moved his blacksquared bishop to a great diagonal. Thinsg are getting complicated for black !

Only move

13.h4 (diagram)
Let's see what black is up to. 13.Kb1 is also possible, but that is not the kind of move a gambiteer likes to play.

Let's assess this position

a/ 13...Be7 14.Bxg7 Rg8 15.Nxd5 cxd5 16.Bc3 Qa4 17.Bd3 and white has an obvious advantage (+)

b/ 13...Rg8 14.Bh3 (+)

c/ 13...f6 14.Bh3 (+)

d/ 13...f5 14.gxf5 Nxf6 15.Bh3 (+)

e/ 13...0-0-0 14.Qxf7 Qe7 15.Qf3 (+=)

f/ 13...Bd6 14.a3
...f1/ 14...Bf4+ 15.Kb1 Qa5 16.Nxd5 Qxd5 17.Qxf4 Qxh1 18.Be2 (++)
...f2/ 14...Qa5+ 15.Bxg7 Rg8 16.Nxd5
......f2a/ 16...cxd5 17.Bc3 (+=)
......f2b/ 16...Rxg7 17.b4 Qd8 18.Nf4 (+=)

g/ 13...Qd6 14.Kb1
...g1/ 14...Qf4 15.Qe2 (+=)
...g2/ 14...0-0-0 15.Bg2 (=)
...g3/ 14...c5 15.Nxd5 (=)
...g4/ 14...e5 15.Ne4 (+=)

So the unimaginable has become reality - there are a few lines that give  black equality in the Teichmann Exchange !!

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