One more hand from Russia 6-max 10K buy-in championship.

My starting table is pretty tough with Alex Kravchenko, Denisov (2nd place in Bellagio Cup 5K event), Zaichenko (FT in one of WSOP 1.5K events) and a couple of solid regulars. It's an active table with a lot of raising, limp-reraising, calling down with A-hi etc.
We're still in the first level with 50-100 blinds (structure is perfect). I have about 21K (from 20K starting stack). Villain in CO has about 14.5K, he is known as pretty tight, but tried to play a lot of pots earlier with no success at all.

He raises to 250, I call in SB with J10, Zaichenko calls in BB. Flop comes Q73. I decide to check-raise and quickly check, Zaichenko checks, CO bets 400, I raise to 1000.
Zaichenko folds, CO thinks for a long time and raises to 2600. What's your line here?
Do you like a check-raise at all?

Is it correct to bump it to 7-7.8k?
I think ur ahead of him, his bet seem to me like he's trying to get information, and you should give him. he's likely to have the Ac, 33, 77. I don't know, it's just doesn't seem like he has better flush then you by now...

I raise bigger the first time around, like 1200-1500. I call his flop 3 bet and start calling down if this guy has a clue what he's doing. If he's some psycho Russian GET IT IN.

Yeah, definitely raise more if you're going to check-raise. I mean, I hope that's not how you'd semi-bluff OOP. It's certainly not how you'd be expected to.

I agree with bond that ur c/r amount should be more. Besides that he can have a lot of hands here. AcQx 77/33 AcAx,KcKx etc...I don't he's playing AcKc the way he did. Pretty sure u have the best hand here. If you feel like hes really strong here I think you gotta get it in one the flop. Otherwise if u feel like hes capable of making moves then flatting is fine. If your going to flat just know that he can check behind and peel off another card and just go on from there on river.. If u do flat and no club or q73 falls I prob check shove any bet.

I had a similar hand in monte carlo where blinds where still 25/50 we were both deep around 15k or so... I got involved with j8c and flopped a flush( dont remember the exact flop). I had checked in the dark he bet out like 250-400 i raised to like 1300 he tanked for a bit bumped it to like 6-8k i just shoved and he called with AcQx without a pair or anything just nut flush draw..

We're not afraid that the board will pair? Or a low club will come on the turn?
He is not psycho for sure, it's not a complete bluff, but I really don't know if he thinks that QQQ or AcAx is nuts here