Stigma wrote on 12/16/10 at 15:46:11:
But I still think my point about different kinds of main lines holds. In the games you posted you're playing the Kan/Taimanov and the Dutch, and a relatively positional 1.d4 repertoire as White. The Semi-Slav might be an exception, but at least it was with e3 and not Bg5. These are not lines that most opponents are likely to have prepared very deeply for; it's also fairly solid stuff where one inaccurate move won't lose the game. If you were playing lines like the Dragon Yugoslav Attack, the Winawer Poisoned Pawn, the King's Indian Mar del Plata or the Botvinnik Semi-Slav with either colour, the player who knew theory better or even had some improvements ready would have a huge practical advantage.
Well I've played games that are sharper and follow theory longer, but this was just an arbitrary sampling of the last 12 games I played against 2200+ players. I did this because I didn't want to deliberately choose games with more or less theory. By the way, there are 9 different players represented in those games (10 including me).
I agree with you to some extent, but I was prepared to play sharper lines in those games. First off, the Taimanov has a ton of theory, don't be fooled. Perhaps most of those lines aren't as sharp as the Yugoslav Attack against the Dragon, but some probably are (or are very close). I was also prepared to play sharper lines in the Semi-Slav, but they didn't come up in these. Ditto the Dutch--I wasn't deliberately trying to avoid sharp lines, it's just what happened in these games. My point is that it happens in LOTS of games, much more than people seem to think.
My other point is that choosing to study and play main lines doesn't necessarily mean you have to play the Yugoslav Attack, the Winawer Poisoned Pawn, the Mar Del Plata, etc. You can choose to play slightly tamer options like the Kan, 1.e4 e6 2.d4 d5 3.Nc3 Nf6, the Saemisch KID, the Meran instead of 5.Bg5 against the Semi Slav, etc. You can start by playing less sharp lines and gradually sharpen them as you progress, also. You don't need to resort to the London, Colle, etc. out of fear. You
can play main lines without memorizing lots of theory, you just need to choose them wisely.