What are some lines of the Queen's Gambit symmetrical variation for white? Some people who I play always play the symmetrical variation, and I don't know how to play it for white.

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1.d4 d5 2.c4 c5
It's really unknown, I've never seen it actually played except for maybe one or two internet blitz games out of ten thousand. But I've looked up some lines for you.

You play 3.cxd5 and now black needs to decide what to do.

The symmetrical 3...cxd4 4.Qxd4 followed by e4 just loses a pawn.

3...Qxd5 allows white to chase the queen, getting a lead in development:

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1.d4 d5 2.c4 c5 3.cxd5 Qxd5 4.Nf3 cxd4 5.Nc3 Qa5 6.Nxd4


So black plays 3...Nf6. Now a thing like 4.Nf3 cxd4 5.Qxd4 Qxd5 stays completely symmetrical, but white can play 4.e4!.

Fundamental Chess Openings gives two lines, both a bit better for White because of better development:

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1.d4 d5 2.c4 c5 3.cxd5 Nf6 4.e4 Nxe4 5.dxc5 Nxc5 6.Nf3 e6 7.Nc3 exd5 8.Qxd5


and

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1.d4 d5 2.c4 c5 3.cxd5 Nf6 4.e4 Nxe4 5.dxc5 Qa5+ 6.Bd2 Nxd2 7.Qxd2 Qxc5 8.Na3