two hands where i turn into a calling pumpkin

[chillrob]

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Hand 1: I hate the turn check. Just bet/fold the turn. Your line allows these guys to possibly see the river for free which is very bad on this board, and you get pwned by the nit. Check/calling nits down with one pair is lighting money on fire. Keep the initiative and bet/fold with confidence that way you lose less vs these nits and you charge them the maximum when your one pair hand is good.

Hand 2: I think checking the turn here is definitely the expert play and if you think this guy would raise the flop with Qx, then calling down is also the expert play.

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I agree with hand 1 suggestions. Could you explain why checking the turn is best in hand 2?

Rob