[mcguw]

His play just smells like a trap, i.e. flat calling a 10X BB pre-flop raise, and check calling the flop. Calling such a large pf raise puts him on a relatively narrow range of hands. The best case scenario is that he has KK, AQs, KQs or AKx in which you are well ahead. Unfortunately QQ and JJ are not outside his range of possibilities. He has 6 ways to KK, 2 ways to AQs, 8 ways to AK, 4 ways to KQs, 6 ways to QQ and 6 ways to JJ. Many players would fold AK to a nearly pot size bet on the flop when you re-raised so large pf. In this case I would like to see the showdown as cheap as possible. I would play the turn and the river in whatever way you think would allow you to do this, either by checking the turn and calling the river, or making a small turn bet and checking the river.