trw wrote on 09/09/10 at 18:55:47:
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Sorry the evidence is with me, look at the Exchange Slav in my database 88.1% draws. I am not attacking 'any evidence' as you said. The analysis of the games say 'Kramnik achieved zilch in an Exchange Slav but proceeded to outplay his opponent in the middlegame.' Every slav book you read the author admits to both sides having nothing in the exchange Slav.
Once again, I stipulated "master games" that lasted more than 20 moves.
I refined the search to master games (both players rated +2200) that lasted +25 moves and found that more than 62% of the games were decisive.
I chose these game to avoid the known tendency of players who use the Slav Exchange to play prearranged draws.
You stated that authors of books on the Exchange admit that neither side gets anything from the opening.
This is what Glenn Flear wrote:
Quote:"The first comment to make about this, and in fact all, symmetrical positions is that it isn't so easy to get a draw as Black--if White play good moves then eventually Black will be forced to break the symmetry. ...
Strong Players with the white pieces often play the Exchange variation to win ..."
(
The Slav for the Tournament Player, 1988 p.89)
Silman and Donaldson say,
Quote:"The Exchange Variation is without doubt one of White's best weapons versus the popular Slav Defense. By creating a symmetrical position with an extra tempo, White keeps Black's counterplay to a minimum while developing positional pressure...
A great favorite of technical Grandmasters like Yasser Seirawan and Ulf Andersson, the Exchange Variation against the Slav may not be suitable for players with more aggressive tastes, or for players with poor technique. On the other hand, attacking players such as Beliavsky and Shirov have won many nice games with Black..."
Silman and Donaldson,
The Exchange Variation of the Slav, 1994 p. ii)
Burgess writes,
Quote:"It has the reputation of being deadly dull. It is a very popular choice for players looking to play out a prearranged draw with a minimum danger of embarrassing tactical mishaps, and this tends to skew the statistics for the Exchange Slav.
In fact, the Exchange Slav isn't so boring. Black does have ways to break the symmetry and create some imbalance, albeit with the inevitable attendant risks. ... [M]ost players want to win as White and play the Exchange Variation as a way of seeking an advantage. Then... things can get very interesting indeed."
The Slav, 2001 p. 81.