Related Openings
QGA - Haberditz Variation	d4, d5, c4, dxc4, Nf3, a6, e3, b5
QGA - Alekhine defense, Alatortsev Variation	d4, d5, c4, dxc4, Nf3, a6, e3, Bg4, Bxc4, e6, d5