MNb wrote on 12/27/06 at 03:32:54:
My 2SRD opinion: I suspect ...Ne4 in all variations, where White has not played b3 or Re1 and sometimes even then.
It looks like White can prove a nice edge after 6...Ne4 with 7.Nbd2 Bf6 8.Nxe4 fxe4 9.Ne5 (obviously not good, if there is a pawn on d6) d5 (according to Williams "Black is also OK after 9...c5!?", but is he? Williams is often quite optimistic) 10.Ng4 (10.Bf4!? and 11.f3) Be7 11.Bf4 c5 12.dxc5 Bxc5 13.Rc1. If I am not mistaken, it was IM Cox who pointed this out. This variation shows the problem of those ...Ne4 lines: White gets a substantial lead in development.
Osnos,V - Frolov,A [A92]
Leningrad Leningrad, 1984
1.d4 e6 2.c4 f5 3.g3 Nf6 4.Bg2 Be7 5.Nf3 0-0 6.0-0 Ne4 7.Nbd2 Bf6 8.Nxe4 fxe4 9.Ne5 d5 10.Ng4 Nc6 11.Nxf6+ Qxf6 12.Be3 Na5 13.b3 Bd7 14.Qd2 b6 15.f3 Qe7 16.Bg5 Qe8 17.cxd5 exd5 18.fxe4 Rxf1+ 19.Rxf1 h6 20.Bxh6 Qh5 21.e5 c6 22.Bg5 Bh3 23.Bxh3 Qxh3 24.Be7 Re8 25.Qg5 Qd7 26.Bf6 Nb7 27.Rf4 Nd8 28.Bxd8 Qxd8 29.Qg6 Qd7 30.Rh4 Re7 31.Qh7+ Kf8 32.Qh8+ 1-0
the natural 12...Ne7 looks like an improvement but white does have the bishop pair, so maybe black should save his darkfielder before playing Nc6, e.g:
Bagirov,V (2493) - Haub,T (2388) [A92]
Crailsheim op Crailsheim (7), 24.05.1999
1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 Be7 5.c4 0-0 6.0-0 Ne4 7.Nbd2 Bf6 8.Nxe4 fxe4 9.Ne5 d5 10.Ng4 Be7 11.b3 Nc6 12.Bb2 h5 13.Ne3 Bg5 14.Qd2 Ne7 15.f3 Nf5 16.f4 Be7 17.a4 Rf6 18.Ba3 Bxa3 19.Rxa3 a5 20.Ra2 Rg6 21.Nxf5 ½-½