SWJediknight wrote on 01/14/12 at 11:10:36:
5...exf3 6.Nxf3 e6 also looks good for Black as the bishop normally belongs on g5 in the Euwe Defence.
I happily disagree. In the Euwe Defence Black's counterplay is often based on ...c7-c5. With the pawn on c6 Black will have to lose a tempo, which can be used for Be3-g5. Another plan for Black is the Queenside fianchetto, which works very well if Black is given the time. The pawn on c6 hinders that idea.
4...c6 5.Be3 exf3 6.Nxf3 Bf5 and Black gets the usual Caro-Kann with an extra pawn.
6.Qxf3 might be worth a try if White can find an improvement on
Diebert,C - Ivanov,I (2495) [D00]
USA Masters Chicago (3), 1990
0-1
There is of course also the question if this idea works against the Caro-Kann: 1.d4 d5 2.e4 dxe4 3.Nc3 c6 4.Be3 Nf6 5.f3. Perhaps Black has better than 4...Nf6.
This is important because 6.Bd3 against the Ziegler might be better than 6.Bc4.
This brings me to perhaps my last point of criticism. Scheerer is quite laconic about 1.d4 d5 2.e4 dxe4 3.Nc3 c6 4.f3, writing that "4...e5 is not as strong as before." Perhaps, but I find this hardly more inspiring than the Lemberg.