[elus2]

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i think that it's a little more likely that the button has flopped 2 pair w/87s...my only other concern is if the SB is drawing to a bigger flush....

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this is incorrect. there are more combinations of 56s possible considering that the flop already contains an 8 and a 7. having said that, hero should not be putting any more money in unless he improves on the river or if sb checks and the button gives us ridiculous odds for a river call. if we hit a flush then it is dependent on how big sb bets and i'm willing to call a fair amount in that spot. but this is all contingent on whether or not i will call the turn bet in the first place since we are sandwiched in between the turn bettor and the flop bettor.