Author: Albert Silver
Date: 13:13:45 03/20/02
Go up one level in this thread
On March 20, 2002 at 15:13:58, Gian-Carlo Pascutto wrote:
>In the Dutch championship 2001, my program reached the following
>position with black against Rebel Century
>
>[D]r2q1rk1/pbp1bppp/1p2pn2/8/3P1B2/2PB1N2/PP2QPPP/R4RK1 b - - 0 1
>
>It played the losing move a5?, and proceeded with the 'plan' of
>pushing it further along the a-file.
>
>Nowadays, it would find the correct c5 after about a minute
>of search, but it is clear by looking at the variations that
>it is more due to luck and that it is still not really understanding
>what is going on.
>
>I am wondering if one of the strong players is able to explain
>why c5 is good and a5 is not. I would play c5 myself, but I
>have to admit I would not be able to explain why it is better
>either. I just know it is good to hit at the d4 pawn with the
>c pawn if possible, but I suspect there is more to it?
The two points that I believe to be decisive are:
- It attacks and pressures the center (never lost sight of the battle for the
center)
- Allows play and pressure on both the c and d files.
- Once white's c-pawn is gone the d5 square is pretty nice.
As to a5, the problem is that it doesn't really do anything. Push-push-push and
what do you get? c3 as a target? Not even that.
Albert
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