Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...f5/4. Nc3/4...fxe4/5. Nxe4/5...Nf6/6. Nxf6/6...Qxf6

Ruy Lopez, Schliemann Defence

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

Common moves:
7. Qe2 - Main Line
7. O-O - Kupreichik's Variation

Having avoided committing the queen to e2 on move 6, White typically puts it there anyway with 7. Qe2. This restricts Black's options, because now ...d5 would self-pin the c6-knight allowing White to capture the e5-pawn for zero compensation.

Viktor Kupreichik mixed things up a couple times with 7. O-O. If Black reacts the same way she would after 7. Qe2, with 7...Be7, White has a huge positive score with the plan of Bxc6 and Qe1. But alert Black players found 7...Nd4! to take advantage of the fact that the e-pawn isn't under any pressure.