The flash back in the second half, a little cliched, should have been shorter than what it was. Apart from the elements like the central character being the smartest, the usual stigma associated to a villain and misinterpreting characters, Rajathandhiram is that game of chess between two Grandmasters. It requires patience, intellectual competence and the spatial knowledge of creating a scenario and responding to it. Pay attention to the proceedings of the story and get entertained.
Verdict: A smart con movie which entertains