Quote:
(A) If 4...Nf6 5.exf5 Bxf5 6.d4 e4 7.Nh4 Bg4, then 8.Be2 Bxe2 9.Qxe2 d5 10.Qb5+ Nc6 11.Bg5 Bb4 12.Qxb7 Nxd4 has occured in several games, including a game that GM Kindermann lost with Black. After 13.Bxf6! gxf6 14.0-0 (I don't think 14.0-0-0 is so convincing because of 14...Bxc3 15.bxc3 Rb8 16.Qxa7 Ne2+ 17.Kd2 Nf4 and the position is a mess) 14...Bxb4 (what else? The Pd5 is hanging.) 15.bxc3 Ne2+ 16.Kh1 0-0 17.Rae1 Nf4 (17...Nxc3 is very risky because of 18.Qb3!, and after the apparently forced 18...f5 19.g3 Qf6 20.Re3 White seems to be winning) and after either 18.c4 or 18.g3 Black's position seems too loose, and I would think that White must be much better. I would go so far as to say that after 9.Qxe2 Black may already be significantly worse.
Time moves on, and so does opening theory. I came across a few games and wanted to infuse new life into this discussion:
Have a look at the following game:
[Event "EU-ch 8th"]
[Site "Dresden"]
[Date "2007.04.03"]
[Round "6"]
[White "Roos,Michael"]
[Black "Graf,Alexander"]
[Result "0-1"]
[Eco "A04"]
1.Nf3 f5 2.d3 d6 3.e4 e5 4.Nc3 Nf6 5.exf5 Bxf5 6.d4 e4 7.Nh4 Bg4 8.Be2 Bxe2
9.Qxe2 d5 10.Qb5+ Nc6 11.Bg5 Qd7 12.Bxf6 gxf6 13.Qxd5 Qxd5 14.Nxd5 0-0-0 15.Ne3 Nxd4 16.Nhf5 Nxf5
17.Nxf5 Rg8 18.g3 Rg5 19.Ne3 Rb5 20.Rb1 Bb4+ 21.Kf1 Bc3 22.b3 Rc5 23.a4 Rd2 24.Rd1 Rxd1+
25.Nxd1 Bd4 26.c4 Rc6 27.a5 Ra6 0-1
It looks like 11. Qd7 is an improvement over 11. ... Bb4
The other main line is 5. d4 ed4 and now either 5. Qd4 or Nd4:
[Event "EU-ch 8th"]
[Site "Dresden"]
[Date "2007.04.03"]
[Round "5"]
[White "Luechtemeier,Peter"]
[Black "Schiefner,Ray"]
[Result "0-1"]
[Eco "A04"]
1.Nf3 f5 2.d3 d6 3.e4 e5 4.Nc3 Nf6 5.d4 exd4 6.Qxd4 fxe4 7.Nxe4 Qe7 8.Bd3 d5
9.Bg5 dxe4 10.0-0-0 Nc6 11.Bb5 Bd7 12.Bxc6 Bxc6 13.Rhe1 Rd8 14.Qc3 Rxd1+ 15.Rxd1 exf3 16.Re1 fxg2
17.Rxe7+ Bxe7 18.Qe1 Kf7 19.f3 Bc5 0-1
[Event "Polyarniy Krug op"]
[Site "Salekhard"]
[Date "2006.11.29"]
[Round "3"]
[White "Ovetchkin,Roman"]
[Black "Gutenev,Alexander"]
[Result "1-0"]
[Eco "A04"]
1.Nf3 f5 2.d3 d6 3.e4 e5 4.Nc3 Nf6 5.d4 exd4 6.Nxd4 fxe4 7.Bg5 Be7 8.Bc4 c6
9.Bxf6 Bxf6 10.Nxe4 d5 11.Nxf6+ Qxf6 12.Qe2+ Kf7 13.0-0-0 dxc4 14.Qxc4+ Be6 15.Nxe6 Qxe6 16.Qb4 b5
17.Rhe1 Qh6+ 18.f4 Re8 19.Rxe8 Kxe8 20.Qe4+ Kf7 21.Rd8 Qh4 22.Qe8+ Kf6 23.Rd6+ Kf5 24.Qe6+
1-0
So, what do you think?