// Check if one king is facing another.
bool 
Board::_IsKingFaceKing() const
{
    const Piece* blackKing = _GetKing( hoxCOLOR_BLACK );
    hoxASSERT_MSG( blackKing != NULL, "Black King must not be NULL" );

    const Piece* redKing = _GetKing( hoxCOLOR_RED );
    hoxASSERT_MSG( redKing != NULL, "Red King must not be NULL" );

    if ( ! blackKing->HasSameColumnAs( *redKing ) ) // not the same column.
        return false;  // Not facing

    // If they are in the same column, check if there is any piece in between.
    for ( PieceList::const_iterator it = m_pieces.begin(); 
                                    it != m_pieces.end(); 
                                  ++it )
    {
        if ( (*it) == blackKing || (*it) == redKing )
            continue;

        if ( (*it)->HasSameColumnAs( *redKing ) )  // in between Kings? // BUG HERE
            return false;  // Not facing
    }

    return true;  // Facing
}