<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def compare_board(self, dst, src=None):
        '''Compare two chessboard'''
        if not src:
            src = self.pos

        if src == dst:
            return True
        else:
            #May return details
            return False