Be2 prepares to castle kingside and is a quieter alternative compared to 6.
White probes black's defences on the kingside, the queenside and ultimately in the centre, forcing a series of weaknesses that spell disaster.
A player may castle either kingside (0-0) or queenside (0-0-0).
White usually tries to exploit his extra space on the kingside, where he will often play for a mating attack.
It often comes about after the black king castles on its kingside in a fianchetto position.
Ng4; however, its drawback is that it deprives the knight on g1 of its most natural square, thus impeding development of the kingside.
Nec6 is considered best, while the retreat to the kingside with 5...
This brings him good prospects of a space advantage that may serve as a basis for a future attack on the kingside.
