4.a3 Bxc3 5.bxc dxe 6.f3 Qd5
- 7. Rb1has scored very highly in practice. However 7...c5may be an effective counter.
- 7. c4 pushes the black queen aside and increases white's control of the centre. However white still has to complete his development.
- 7. a4 preparing for 8. Ba3 to try and keep the black king in the centre is an interesting idea.