public void medium(){
		int comx= 30 * ((int) (Math.random() * 10))+30;
	    int comy=30 * ((int) (Math.random() * 10))+60;
	    xx=(comx-30)/30;
	    yy=(comy-60)/30;
	    if(checker1(yy,xx)){
	    	if(table1[yy][xx]!=0)
	    		zur(yy,xx);
	    	else
	    		medium();
	    }
	    else medium();
	}