Other possibility of kings: (d) If you have king in hand you are not allowed to move pieces which are on the board. (e) If you have king in hand you must drop it on any turn if you are able to do so.
Another rule, if you want to use, is: Not escape check by capturing your own king.
Other possibility of kings: (d) If you have king in hand you are not allowed to move pieces which are on the board. (e) If you have king in hand you must drop it on any turn if you are able to do so.
Another rule, if you want to use, is: Not escape check by capturing your own king.