Stigma wrote on 06/03/09 at 19:16:02:
BPaulsen wrote on 06/03/09 at 12:43:52:
I'll add for right now that I believe white's strongest continuation is not opting for the Universal System with 7. e5, but rather playing 7. 0-0.
[...]
1. e4 e6 2. d4 d5 3. Nd2 a6 4. c3 c5 5. Bd3 Nc6 6. Ngf3 Nf6 7. 0-0
Sample:
7...cxd4 8. cxd4 dxe4 9. Nxe4 Be7 10. a3 0-0 (10...b5!? 11. Re1 += Abbasov-Jorgensen, Dos Hermanas 2004) 11. Be3 += (Short-Kiriakov, Port Erin 1999)
I think either Psakhis or Pedersen in their Tarrasch books mentioned 4.c3 as interesting. Short and Plaskett have been notable exponents of it, often transposing to other IQP openings (the Colle should be mentioned).
I noticed some recent comments by Plaskett on the related
1.e4 e6 2.d4 d5 3.Nd2 Be7 4.Ngf3 Nf6 5.Bd3 c5 6.c3?! ("not good")
6...Nc6 7.0-0? dxe4 8.Nxe4 cxd4 9.cxd4 0-0 10.Nc3. "...this position is well known to theory - it's even been dubbed "The Isolated Queen's Pawn Position" - and may arise from a number of different openings, including the Panov-Botvinnik Attack and some queen's pawn systems. But in all of these it is
White to move! Consequently 10.Ng3 or 10.Be3 might be tried here, but Black ought to be happy with the opening." - Plaskett in Starting Out: Attacking Play, pp. 60-61.
Plaskett obviously no longer believes in this treatment against 3...Be7. If he is right, the question becomes, how detrimental is ...a6 to Black's position? Btw. someone with more IQP knowledge than me should check if ...a6 really is a "free" move for Black compared to Panov-Botvinnik lines, as Plaskett's comment implies.
Right, white's approach doesn't work against 3...Be7, but it does against 3...a6.
However, white immediately gets a good Universal against 3...Be7, because the Be7 is actually misplaced in the 8...g5 positions.
...a6 is only useful if it helps ...b5, the problem is I can't make ...b5 work very well without giving up the c5 square. Black's light squared bishop really struggles to make itself useful.
Normally we reach that position mentioned with white to move, and black
not having ...a6 in. So is ...a6 helpful, or harmful?
It's those small little details that make all of chess.