[Heisenb3rg]

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Seriously though, the way to combat this is the screwplay. TAG CO raises, I defend with a5, flop comes xxx, I check/raise. Turn is A, GREAT spot for a screwplay against a thinking TAG, imo - I know I walk right into this one all the time. (Though some people use this line way too often and screwplay like 77 or KQ here...)

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Wait, the flop came a non-5, right? There are lots of players where betting and calling down in that spot is MUCH better than screwplaying. I mean, its not like the guy's gonna fold better aces, but he sure might 3-bet you with them. You're also missing out on some of the power-bluff equity heisenberg was talking about (he might bet/fold UI big cards if you check, but he will raise them a lot and even sometimes bet the river, if you c-bet).

Against a tough player, I actually think it (screwplaying the turn in your example) is a better play with 77 or kq.

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I also dont like the screwplay against a solid player in this situation.

By checking the turn after check/raising the flop you are basically saying "I have a pair but im afraid of the ace or I have two pair or better and am planning to c/r u"

Basically neither of those thought processes fall in line with folding. Thus, I check behind a lot of turns or bet/fold them when I was planning to put in 2 bets anyway.
Only when I can REALLY credibly represent the ace would I bet it without an ace (need to suspect my opponent is considering a fold).

If you start playing mind games with your draws in this situation as well to balance it, maybe its okay.. But I prefer a b3b in most situations...

If I got sexyed and had an ace ill bet and happily call down... I was probabily planning to raise the turn bet anyway, so screwplaying just missed a bet vs me.