$10 NLHE 6-max: KK river shove

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has K K

fold, fold, CO raises to 3 BB, Hero raises to 9 BB, fold, fold, CO calls 6 BB

Flop: (19.5 BB, 2 players) 2 4 Q
CO checks, Hero bets 13.9 BB, CO calls 13.9 BB

Turn: (47.3 BB, 2 players) 5
CO checks, Hero bets 33.7 BB, CO calls 33.7 BB

River: (114.7 BB, 2 players) 3
CO bets 57 BB and is all-in, Hero calls 57 BB

fold river. How many times did you see a bluff here in your career? especially when straight on Ax is possible+ bdfd hits.

hmm yes Ax card can make straight considering he called your bet on flop its possible CO have AQs/Aqo or small pockets which made set and his shove all in means he made straight or he believe he have better card than you.

for me its fold with just over pair.

I can't fold river.
57bb is only half pot.

it's a fold on river
The V looks like a fish thoough unless he had AQ or Adxd

I do not believe the villain has tried to steal in this situation unless you have readings from him that will allow that conclusion.

So, maybe the village has AQ, which would be one of the few cards he would pay for this flop, maybe have an AXs, who somehow decided to pay the flop, and risked a flush on the river.

Another possibility I see here is that the villain took the bet with a low pair in hand, and got a three of a kind on the flop, and he could have opted to go allin because of some reading he has his, maybe the possibility of a straight frightened him and he preferred to take action while having to wait for you to act.