[ilya]

I like curtains' line.

I like the check cos the LP limper could have lots of hands like QJ or A6s which would give up to a bet in this small pot, but might well take a stab if he checks. Once the LP limper 3-bets, I like pushing cos any line curtains takes is gonna look strong at that point, so he just has to hope that LP can call. I can't think of any hands, really, which would fold after 3-betting on the flop, yet call a big bet on a later street without having caught up to a better hand than curtains' 2pair. Pushing on the flop also has a better chance of looking like a draw; finally, it protects his action from ugly turns like Ace or a 5.

The only downside I can see to checking in this spot vs. betting right out is that if the LP limper has a hand like 77, he might raise a lead, but is unlikely to call a check-raise. But if he's agressive enough to raise with an underpair to the flop in this small pot, he likely would have open-raised preflop with the same smallish/medium pair.