First off, 6.Qf3 should be followed by 6...Qxf3 and only after the recapture should you play 7...bxc6.
The reason for bxc6 after Qf3 is that it'll allow you to start an attack on the weakened kingside pawns (after the queen exchange) by fianchettoing your bishop.
The reason for dxc6 after Qe2 is that it'll allow for quicker development, which is good for you since 1. you already have a lead in development and 2. Qe2 prevents easy development for him.
What's wrong with getting advice from someone else? What is the "true meaning of chess?" bn2114rec, you are sounding a bit cultish.
bn2114rec: Getting advise on tactics (and understanding it) in opening is also a part of improving your game.
RyanMK: thnx for the advice. Still some questions though, i would not play 6. ... Qxf3. (white can't play anything like 7. Qxf6 because of 7. ..., Nxf6 and giant lead in development)
Also i experience problems fiancettoing the light squared bishop. Since after bxc6 the diagonal of that bishop is blocked?, and the dark squared bishop on c5 prevents the removal of the c6 pawn?
Or do I miss something?
Well, 6...Qxf3 destroys white's kingside and gives black a large advantage.
In the next few moves, white will often make moves that require you to move your bishop from c5. This is because that bishop is a powerful piece in the open board. Then you can often move your pawn to c5 and fianchetto your light squared bishop.
the idea of moving Qf6 is to get an attack on the white king, i personaly never had much experience with the opening, but i know that you should think about attacking in this kind of position, as black, so recaputuring with any pawn is possible, so you could have an attack with the light squared bishop too, maybe bxc6 might be easier to play if you do not know many lines, the bishop goes to a6 possibley, and d5 breack in the centre is possible and supported by c6.
of course if you do not want to get into tricky play you might just opt for Qxc6, it results in no doubled pawns, but it gives quite an equal position with accurate play, if you do not feel confident in sharp attacking lines this is a legitimate option...
again, this might be missleading information... but this is to my best of knowledge the layout of things.
Currently i'm preparing myself to play a match this friday (club level).
I have to Black pieces, and the favorite e4 opening of my opponent is the scotch game.
Probably game will go as follows:
1.e4, e5 2.Nf3, Nc6 3.d4, exd4 4.Nxd4, Bc5 5.Nxc6, Qf6
And now my opponent plays different options:
a) 6.Qf3
or b) 6.Qe2
I don't understand how to continue now. Research shows that most Grandmasters play: a) 6.Qf3, bxc6 or b) 6.Qe2, dxc6
Either way black gets it's double pawns, but can someone explain me what's the difference between bxc6 and dxc6? What are the (dis)advantages, and why is 6.Qf3 followed by 6. ..., bxc6 and not 6. ..., dxc6? And vice versa?