Is this KK line alright??

[SonOfWestwood]

Villain is semi-fishy, 26/5/0.86/40% WtSD/50% W$SD. Pretty passive post flop. Will call down w/ gut shot straight or mid-pair on board and bets big when he's got the goods.

Please comment on this play. Is a river bet necessary?

All comments appreciated.

Party Poker No-Limit Hold'em, $ Hero (8 handed) converter

Button ($25.8)
SB ($43.24)
Hero ($51.6)
UTG ($31.1)
UTG+1 ($9.5)
MP1 ($5)
MP2 ($180.1)
CO ($50.55)

Preflop: Hero is BB with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.1.
<font color="#666666">3 folds</font>, <font color="#CC3333">MP2 raises to $0.75</font>, CO calls $0.75, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $3.25</font>, MP2 calls $2.75, CO folds.

Flop: ($7.85) 6[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $6</font>, MP2 calls $6.

Turn: ($19.85) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $9</font>, MP2 calls $9.

River: ($37.85) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, MP2 checks.

Final Pot: $37.85

[gulebjorn]

Looks fine. Maybe bet full pot on flop. 1/2 pot information bet on turn looks good to me but is open to discussion.

I'm not sure about the river check. At first, I thought you might wanna try a blocking bet in case he has the Q, but since you say he bets big when he's got the goods, you could expect a Q to raise you on the turn. So if your read is good, he does not have the Q and you might wanna check the river to induce a bluff. If this guy doesn't bluff, you might as well bet for value here.

I'm pretty sure you are looking at a busted flush draw here.

[nietzreznor]

I guess it depends on how often you think he has a draw here compared to a midpair hand (or something that beats you), and how often he bluffs missed draws or value bets a midpair when you check.
If your read is correct, he probably doesn't have a queen, so if you think he is pretty passive, I would probably bet the river.