4.a3 Bxc3 5.bxc dxe 6.f3 b6
| 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.a3 Bxc3 5.bxc dxe 6.f3 b6
| The first point about this line as with many other defences is that white cannot play 7. exf due to Qh4. White needs to find a move that threatens fxe and continues his development. 7. Nh3 looks best. This line should examined in conjunction with 6. Bd7 which leads to similar positions. |