MNb wrote on 10/21/10 at 15:59:50:
Stefan Buecker wrote on 10/21/10 at 14:52:41:
(a) 10.b4 (Caveman Variation) 10...d5 11.a4 Bd6 12.a5 Ne7 13.b5 Bf5 14.b6 a6 15.bxc7 Qxc7 "despite the weaknesses it seems that Black can hold" - so far the fine analysis analysis by linksspringer.
This is what I mean. Every experienced attacking player should know that 14.b6 is too early, no matter what the engines say, if there is no decisive follow up like the sac 15.Bxa6. In fact I think Black is already better after 15...Qxc7 as White's weaknesses (a5 and c3, Bishop c1) seem more important than Black's.
I probably would play 14.Be3 idea 15.c4, while I also like Rybka's 14.Bf4 better.
As in this type of pawn storm the battery Bd3, Qe2 would be ideal line B might even be better: 10.Nf4 Bf7 11.b4 d5 12.a4 Bd6 13.a5 Ne7 14.b5
h5 (Black might have better here) 15.b6 a6 16.Qe2 g5 17.Nh3 Be6 18.Nxg5 fxg5 19.Bxa6 with a dangerous attack indeed.
Note: How ridiculous that an 1800 patzer tries to teach two titled players how to conduct a pawn storm; but I simply think I am right here.
The battery Bd3, Qe2 and Bxa6 doesn't work too well if Black is cautious. Even after 14...h5 15.b6 a6, the continuation Be2 followed by Nd3-c5 is probably more dangerous for Black. But similarly as in line (a), where I gave 14...Kb8 as a good alternative, Black should rather play the flexible
14...Kb8 (and not 14...h5). Then 15.b6 a6 would be harmless.
My impression is that the immediate 10.b4 is more critical. In some cases the Ne2 may go via c1 and b3 to c5. - White certainly has += after 7.c3. But his pawns a and b are somewhat lacking support of White's minor pieces, and the open e-file helps Black. Black shouldn't push his h- and g-pawn, this is a race he cannot win. But the task to defend Black's position seems managable.