Rajasthan Royals have set a victory target of 160 runs for Chennai Super Kings in the first semifinal of the Champions League Twenty20 tournament. At Jaipur today, put in to bat, Rajasthan made 159 in their twenty overs.Chasing the target of 160 Chennai were 13 for 1 in 3 overs, a short while ago.The second semi-final will be played between Mumbai Indians and Trinidad and Tobago in New Delhi tomorrow.