Teichmann defense - continued.

Last week we learned that black can achieve a better position in the Teichmann Defense after the moves 1.d4 d5 2.e4 dxe4 3.Nc4 Nf6 4.f3 exf3 5.Nxf3 Bg4 6.h3 Bh5 7.g4 Bg6 8.Ne5 e6 9.Qf3 c6 10.g5 Nh5 as 11.Bd3 Qxd4 12.Nxg6 fxg6 13.Qg4 gives the defender a small advantage.

In my quest to find an theoretical equalizing line, I conclude the old 9.Bg2 c6 10.h4 (diagram) is the only candidate.

Black is forced to seek a place for his bishop, which can be done indirectly only through 10...Bb4. My silicon friend now gives 11.Bg5 as best, and completely equal after 11...h6 12.Nxg6 fxg6 13.Bxf6 (=), but I will discuss 11.00 today (diagram). White risks all to trap an enemy piece.

a/ 11...Bxc2 12.Qd2 (diagram)

...a1/ 12...00 13.Rf4
......a1a/ 13...Ba4 14.Qe3 Bxc3 15.bxc3 (=)
......a1b/ 13...Bg6 14.h5 Nxh5 15.gxh5 Bxh5 16.Qe3 (=)
......a1c/ 13...Bxc3 14.Qxc3 (=)
......a1d/ 13...Nxg4 14.Qxc2 (+=)
...a2/ 12...h6 13.Rf2 Bg6 14.Nxg6 fxg6 15.g5 hxg5 16.hxg5 Nd5 17.Qe2 (+=)
...a3/ 12...Bg6 13.h5 (+=)
...a4/ 12...Be4 13.Nxf7!! Kxf7 14.Bxe4 (+=)

b/ 11...00 12.Rf2!! (diagram)

...b1/ 12...Bxc3 13.bxc3 Ne4 14.Rf3 (=)
...b2/ 12...h5 13.g5 (=)
...b3/ 12...h6 13.g5 hxg5 14.hxg5 (+=)
...b4/ 12...Nbd7 13.Nxd7 Qxd7 14.h5 Bxc3 15.bxc3 Be4 16.g5 Bxg2 17.gxf6 (+=)

c/ 11...Nbd7 12.Qe2 (diagram)

...c1/ 12...Nxe5 13.dxe5 (=)

...c2/ 12...00 13.h5 (=)

...c3/ 12...Qb6 13.Be3 (=)

...c4/ 12...Qc7 13.h5 (+=)

...c5/ 12...Qa5 13.Nxd7 (+)

So, if white wants a (theoretically) safer alternative than 9.Qf3 c6 10.g5 Nh5 11.Bd3, it is obvious 9.Bg2 is a serious option - as none of black's options seem to give ab advantage to the defender.