I shouldn't have checked the river... player hadn't shown any hands down but had been fairly active... interested in other peoples river play here

PokerStars No-Limit Hold'em Tourney, Big Blind is t200 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG (t20077)
Hero (t7856)
MP1 (t4352)
MP2 (t5500)
MP3 (t17090)
CO (t11404)
Button (t4045)
SB (t3435)
BB (t7868)

Preflop: Hero is UTG+1 with Q, Q.
Hero raises to t1000, 3 folds, CO calls t1000, 3 folds.

Flop: (t2175) 5, 3, 2 (3 players)
Hero checks, CO checks.

Turn: (t2175) 8 (3 players)
Hero bets t2000, CO calls t2000.

River: (t6175) 4 (3 players)
Hero ???????????

I'd put a blocker bet of 2500ish out there. If he raises you, he obv has the flush or the A. The way you played the hand it looks like missed AK so it tells a consistent story of you looking for value. Problem is I see villain having an A or the flush here a decent amount, but this line is way better than checking and hoping villain doesn't bet.

I bet this flop like 100% of the time.

Anyone else?

Yes, that is definitely the way you should play it. As played from river though I think you need to blocker bet.

I play the whole hand completely differently.

First, if the converter didn't screw up, the blinds are 100/200 and if I'm opening a pot, I'm making a standard 3x raise and not the 5x raise you made..I don't want to scare people away with qq

Second I bet that flop 1000% of the time..After that, the hand just plays out so differently that I can't really give advice on the river..

As you played it, I would probably agree with the others and throw a blocker bet out there of about 1/3 the pot

Raise smaller preflop.
(I sound like a broken record)

I bet the flop every time.

I bet the turn, but not for $2k. ~$1200-$1400 is fine IMO.

As played, the river is incredibly awkward. You have less than the pot left in your stack. I probably check/fold. I don't like betting 40% of your stack and folding to a shove. I don't see the value.

I probably should have given a little more info here

I generally always open to 3-3.5 BB's but this table had been 5x BB for about 45 minutes consistently so I was fairly certain if someone wanted to play I was going to get called. I check the flop inducing the other player to bet because I had seen him bet the flop 100% of the times he was in hands and checked to or first to act. He must of realized that I was one of only two at the tables who was having some discretion in hands preflop as many hands were going 3 or 4 players to a flop, and didn't try his standard flop bet. It also could've meant to me he really flopped a big hand. In any case, it was the first time I had noticed he done something different on this flop in this case.

Finally, the called bet on the turn really smelled to me like and AhX hand, and when the straight came on the river I played stupid scared

Realistically, I know I F-ed up on the river and shoulda thrown out a 2.5K ish bet instead of checking. Instead he put me allin and I folded, him showing the Kh river bluff.