THE SMART TRICK OF CHESS BOARD THAT NOBODY IS DISCUSSING

Castling can be carried out only when there are no pieces involving the king and the rook you are going to move. The king and rook can't have moved Beforehand. You can't castle In case your king is in Verify or if doing so would shift your king as a result of or to the sq. in which he can be in Examine. Thanks! We are happy this was beneficial.Ches