Related Openings
QGD - Orthodox defense, Rubinstein attack, Gruenfeld Variation	d4, d5, c4, e6, Nc3, Nf6, Bg5, Be7, e3, O-O, Nf3, Nbd7, Rc1, c6, Qc2, a6, a3
QGD - Orthodox defense, Rubinstein attack, Karlsbad Variation	d4, d5, c4, e6, Nc3, Nf6, Bg5, Be7, e3, O-O, Nf3, Nbd7, Rc1, c6, Qc2, a6
QGD - Orthodox defense, Rubinstein attack (with Rc1)	d4, d5, c4, e6, Nc3, Nf6, Bg5, Be7, e3, O-O, Nf3, Nbd7, Rc1, c6, Qc2