Editing Two Knights Defense (section)

===Modern Bishop's Opening: 4.d3 <span class="anchor" id="Modern Bishop's Opening"></span><span class="anchor" id="4.d3"></span>===
The quiet move 4.d3, the Modern Bishop's Opening,<ref>Hooper & Whyld (1996), p. 262. ''Modern Bishop's Opening''.</ref> transposes into the [[Giuoco Piano#Giuoco Pianissimo|Giuoco Pianissimo]] if Black responds 4...Bc5, but there are also independent variations after 4...Be7 or 4...h6. White tries to avoid the tactical battles that are common in other lines of the Two Knights and to enter a more positional game. The resulting positions take on some characteristics of the [[Ruy Lopez]] if White plays c3 and retreats the bishop to c2 via Bc4–b3–c2. This move became popular in the 1980s and has been used by [[John Nunn]] and others.