[donger]

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5/10 6-max (4-handed)

Villain is 47/21, postflop he is loose and moderately aggressive.

Hero is BB with A [img]/images/graemlins/spade.gif[/img]K [img]/images/graemlins/heart.gif[/img].

Preflop: Button raises and Hero calls.

Flop (4 SB): Q [img]/images/graemlins/club.gif[/img] 4 [img]/images/graemlins/club.gif[/img] 2 [img]/images/graemlins/heart.gif[/img] (2 players)
Hero checks, Button bets, Hero raises, and Button calls.

Turn (4 BB) 8 [img]/images/graemlins/diamond.gif[/img] (2 players)
Hero bets and Button calls.

River (6 BB) 2 [img]/images/graemlins/spade.gif[/img] (2 players)
Hero bets ...

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I think this river decision boils down to whether villain is betting showdown-able hands like AJ or AT if you check to him on the river. If he's doing that, it probably opens his range up enough that you're less of an underdog by check-calling than by betting. If he's going to showdown everything you beat and bet everything you don't (barring rare bluffs), you're better off betting. You already know this, though.