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Normal Topic Alekhine's Defense - Modern Main Line with 7.a4 (Read 1489 times)
lg
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Re: Alekhine's Defense - Modern Main Line with 7.a4
Reply #1 - 01/30/14 at 18:31:19
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This line was suggested to me by ludde (Ludvig Sandstrom) around November 2012 and we have exchanged a few messages about it.

First this suggestion is worth analising to find an alternative to 1.  e4 Nf6 2.  e5 Nd5 3.  d4 d6 4.  Nf3 g6 5.  Bc4 Nb6 6.  Bb3 Bg7 7.  a4 a5 8.  Ng5 e6 9.  f4 dxe5 10.  fxe5 c5 11.  c3 cxd4 12.  O-O O-O 13.  cxd4 Nc6 14. Nf3 f6 15. Nc3 fxe5 16. Bg5  leading to Grischuk Ponomariov which is bad for Black (good analysis here in chesspublishing.com by us and J. Watson, see also the first Kasparov book and his comments on Kasparov-Palatnik). In my opinion, the bottleneck to consider 7. a4 a5 viable (there might be others but this one is critical)

Here is what we have exchanged at the time


Going back to your sequence, I consider it with a slight move order (moves 12 and 13)

7.a4 a5 8.Ng5 e6 9.f4 dxe5 10.fxe5 h6 11.Nf3 c5 (what else) 12.c3 0–0 13.0–0 Nc6 [and we are
in your line) (13...cxd4 is interesting and may transpose but allows white to use the c3 square for the knight)


14.Na3 which aims at b5 and d6 (14.dxc5 this is slightly preferred by engines and that is why I mentioned Black's alternative on move 13

after 14...Nbd7 White plays 15. Be3 not caring about the pawn on e5 but guaranteeing 4 against 2 pawns on the queenside - not saying that this is good but it must be checked)

after 14...cxd4 15.cxd4 we have

i) 15...Bd7 16.Nb5 Ne7 (more on this below) 17.Nd6 Bc6. The point is that sooner or later Black may need to play f6 and the pawn on g6 is weak but it is defended by the knight on e7 that can also over defend d5 (if the other knight wants to go there) and even go to f5.

Note also that here 17.Nxf7 ?! Rxf7 18. Bxe6 Bxd5 and Black is Ok

ii) 15...Nd5 shortening the range of the bishop on b3, 16.Nb5 at first this appears good for White but after 16...Nce7 with the plan the game might follow with  17.Bd2 (this bishop has some development problems) 17..Bd7 18.Nd6 Bc6 19.Bc2 f5!? when the bishop on c6 and knight on d5 cooperates very well with the plausible advance of the g- and f-pawns. Above all the knight on d6 alone does not do too much damage, and the bishop on c6 has quite a lot of potential.

iii) 14...Ne7 and iv) 14...Nb4

this what I recollected from previous messages but the idea is that Black was apparently Ok, but more analysis was needed

  
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Seth_Xoma
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Alekhine's Defense - Modern Main Line with 7.a4
01/30/14 at 01:15:35
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How come this isn't an adequate reply to the dangerous 7.a4 line?
  
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