Position after 10 Qe1
The Queen is headed for g3. From there, she can trouble
Black's kingside and also support the potentially lethal
advances e4-e5 and f4-f5.
LEARN MORE ABOUT THE SCHEVENINGEN
"The middle game is real chess. Whereas the opening is an initial development
of the forces and the end game scientific calculation, the middle game embodies
every conceivable principle of the [sixty-four squares], strategical and tactical,
[simple and profound]. The middle game is the art of chess."
I.A. Horowitz, How to win the middle game in chess.