Hadron wrote on 06/05/10 at 12:49:32:
The Lean attack is only a possible draw if Black ops for the possibility of Alapin’s 13…b5 [...]
I agree with HTH: other moves are better and give Black an advantage. But
13…b5 may not even be sufficient for a draw, in two ways: the traditional
14.Nxe7 and
14.Lxf4. Both variations lead to +/-.
Hadron wrote on 06/07/10 at 00:19:52:
Mr. Bücker didn't Thomas Stock in his article from his 2000 article in Kaissiber Number 13 think that 7...Bh6 was also better black? [...]
In the said 2000 article Thomas Stock's preference was for 6.Qxf3 Qf6 7.Nc3 and 7...Qd4+ 8.Kh1 Qxc4 9.b3.
Has there been any theoretical changes in either of these lines to change their evaulations?
In his reader's letter in Kaissiber #33 (2009), Thomas Stock reported about the results in thematic Muzio tournaments. "7...Bh6? 8.Bxf4! Bxf4..." (but now I wonder what happens after 8...d6), and he also gave new ideas against 9.b3. Both lines are not entirely clear.
My own favourite has "always" been
7.d3 Nc6 8.Bxf4 d6 9.Nc3, the "Exchange Variation". Master Om in reply #21 now mentions
9...Nge7, which in my database scores "only" + 0, =1, -7, much worse than 9...Be6 (+0, =0, -8). Unfortunately, so far I haven't found a refutation.
MNb wrote on 06/06/10 at 19:55:20:
I don't think 9...Nge7 deserves any exclam. Rybka suggests 10.Nb5 Kd8 11.Qe3 and I would say that 10.Qe3 Qg6 11.Nd5 looks interesting as well.
After looking a little further I think the rather crazy 10.Nb5 Kd8 11.Qe3 Kd8 12.Bxf7 Qxf7 13.Bxd6 Qh5 14.Bxc7+ Kd7 15.e5 Nf5 16.e6+ Ke8 17.Rxf5 Qxf5 18.e7 most promising.
A fine analysis, but instead of
15...Nf5, Black has the stronger
15...Nd5 16.e6+ Ke8, and White is in difficulties. For example 17.Qe4 a6 18.Nd6+ (18.Rf5 Nf6) 18...Bxd6 19.Bxd6 Nde7 20.Rae1 Qd5 21.Qxd5 Nxd5 22.c4 Nde7 23.d4 Nxd4 24.Be5 Nc2 25.Bxh8 Nxe1 26.Rxe1 b5, e.g. 27.Re4 bxc4 28.Rh4 Bxe6 29.Rxh7. With two pawns for a piece, and only two black pawns remaining on the board, White's drawing chances remain intact. Nevertheless, not a great variation to prove the correctness of the Muzio...
I am presently more interested in the Kieseritzky Gambit, this thread caught me on the back foot and I cannot guarantee that I'll contribute much more. But it is nice to watch people still studying this gambit, 102 years after Chigorin's death.