Castling is a unique and special move in chess. Castling is one of the three main goals in the opening of the game and you SHOULD do it in every game you play. Castling is the one time in a chess game that you can move two pieces at the same time!
Why would you castle? Well…just think of the word. Chess is a medieval battle and the castle is where the King goes to stay safe.
You should know that there are two ways to Castle: Kingside and Queenside. Chess Players are very logical and therefore you probably correctly assumed that Castling Kingside is going towards the rook on the King’s Side. The Queenside Castle is towards the side of the Queen. Because castle is such an important and special move in chess there are some special rules that a player must obey in order to castle.
Rule #1: To castle in chess you need to make sure that you have moved all the pieces in between the King and the Rook on the side you want to castle to.
This Player is Ready to Kingside Castle
This Player is ready to Castle Queenside. Notice that it takes longer to be able to castle queenside bause there are more chess pieces in the way.
Rule #2: To castle in chess you need to make sure that your King is not in Check and will not travel through check.
You cannot castle through a square that your opponent controls.
Rule #3: To castle in chess you need to make sure that your King and Rook (that you are castling with) have not moved. If either piece has moved you lose the ability to castle.
Often times a player will trade Queens to stop their opponent from castling.
Finally, if your King and Rook have not moved, your King is not in check and will not travel through it, and there are no chess pieces in between the King and the Rook, then you can castle. Move your King two square and bring the rook around him. You final Castle should look like this: