Friday, July 07, 2006

Look for a Better One

If you see a good move, look for a better one! Generalkaia, in his comment to my previous post, has raised the question how I could say that 9.e5 is the best move here. I didn't prove it in my post and should try to do it now.



Of course Bxf7+ is a check and a capture, but can be ruled out quickly because it simply loses a piece for nothing.

But Qb3 is a standard move in the Evans Gambit, just as e5 is, and therefore should be considered here. Principal variation: 9.Qb3 Na5 10.Bxf7 Kf8 and now the Queen has no square to protect the Bishop. The attack on f7 is not safe and must be ruled out. Without this attack, Qb3 makes no sense and must be ruled out, too.

Now the quiet move 9.Nc3 that I actually played in the game. There are just too many quiet variations in this position to be calculated. But the positional calculation is simple. White's trump is his advanced pawn majority in the center and both sides have developed two pieces, the white bishop being more active than his black counterpart. After two quiet moves such as 9.Nc3 Nge7 the balance in the pieces has become more equalized plus the relative weight of the pawn center against the piece development has diminished. Also Black has the zwischenzug Na5 forcing the Bishop to abandon the strong diagonal a2-g8. But the most important of all: Every move that allows Black to bring his King to safety with the plan Nge7 and 0-0 kills the powerful value of the advanced pawn center.

Therefore 9.e5 seems to be definitely the best move in this position.

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