A Solid setup for your king! The Fianchetto's castle is where your bishop is placed in front of the king on the the g2 or g7 square and your king is castled towards the kingside. This adds to the defensive setup of your king and is usually much harder for your opponent to attack your king. The bishop also doesn't an excellent job of controlling the central squares of the board from that fianchetto'd position. Take a look at the position below.