Based on the previous rounds, the opponent has chosen rock, paper, and scissors, but not in a predictable pattern. However, since the opponent chose scissors in round 5 and lost, they might choose rock or paper in round 6 to beat my potential choice of scissors. Given the tie in round 3, I will try to exploit the uncertainty by choosing paper, which has a good chance of winning against rock, and also has a chance of winning against scissors if the opponent repeats their choice from round 5.