Castling
Examples of castling
Main article: Castling
Once in every game, each king is allowed to make a special move, known as castling. Castling consists of moving the king two squares along the first rank toward a rook (which is on the player’s first rank[3]) and then placing the rook to the last square the king has just crossed. Castling is only permissible if all of the following conditions hold:[4]
Neither of the pieces involved in the castling may have been previously moved during the game;
There must be no pieces between the king and the rook;
The king may not currently be in check, nor may the king pass through squares that are under attack by enemy pieces, nor move to a square where it is in check.
rotational moldingchess sets