Hey guys this hand happened at the beggining of day2 of the WSOP ME. 

Blinds are 800/1600 plus antes and I have about 210K. 

UTG has about 180k and opens for 4.1k and I have no idea about his range because he just got to the table. Party poker pro calls in MP with over 250k, he is playing very TAG something like 12/10. I am at the BT with Kh6h and call in position. Both blinds fold. So there is about 15k on the pot.

Flop comes Ks9h6s.

UTG checks… party pro checks and I bet 10k. My image is normal… not too tight and not too loose. I am wearing a Chili poker patch, hat, etc… so everyone probably knows I won my seat online. 

UTG folds and party pro check raises to 35k. I tank 5min and call.

Turn is As. He checks and check behind.

River is 3h and he bets 35k again. 

What do you do and what is his range?

Not sure if it is important but while we are playing we know the table will break up after this hand.