[lautzutao]

Wow, this hand is really hurting my brain...

I'm assuming that with the bet into the raiser when that club hits, and his check on the river BB is holding Ac X, yes? Since he didn't reraise your flop it isn't AQo, so I assume you have him beat...

But WTH did UTG come from? I can't imagine he has a queen or he would have raised earlier as well yes? Possible small flush, but again he'd raise the turn with one correct? I'd have to call this river, it's possible you're best here.