After last weekend's Ziegler game, where I did not dare to play Welling's line as black, I have been looking in this fascinating line, starting after 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bf5 6.Bc4 c6 7.Ne5 e6 8.00 Bxc2 9.Nxf7 Kxf7 10.Qxc2 Qxd4+ 11.Be3 Qxe3 12.Kh1
The first option is 12...Bd6 13.Rae1 Qh6 ( 13...Qd4 is punished by 14.Ne4 )
Scheerer now indicates 14.Bxe6+ as the main move ( as per Bucker ), and suggests 14.h3 might even be better. Houdini conforms this and gives black a huge advantage after 14.h3.
Secondly, what about 12...Ke8 ? The simple 13.Rae1 Qg5 14.Ne4 Nxe4 15.Qxe4 and Houdini gives 15...Nd7 as the best defense, but still a whopping 2.6 advantage for white.
Thirdly, 12...b5 attacks the bishop and wins a bunch of pieces after 13.Rae1 Qxe1 14.Rxe1 bxc4
All other lines after 8..Bxc2 9.Nxf7 Kxf7 10.Qxc2+ simply loose, so I guess black's only try for equality is 9...Bxd1 10.Nxd7 Kxd8 11.Rxd1
So I guess I should have taken the risk in last friday's game by taking on c2 - there is always an important chance that white won't know the correct move 9.Nxf7.