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MAINLINE
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3.Nc3 … 6...bxc6 7.Bd3 O-O 8.Bd2: Petrov Defense line
Petrov Defense line, 11 moves deep. You play Black.
e4
e5
Nf3
Nf6
Nc3
Nc6
d4
exd4
Nxd4
Bb4
Nxc6
bxc6
Bd3
O-O
Bd2
d5
O-O
dxe4
Nxe4
Bxd2
Nxd2
Bg4