[gaming_mouse]

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He doesn't always have A high, but if he checks it he is giving a free card when we're a ~2:1 dog and if he bets it, I think he's folding often enough for the check-raise to be profitable.

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I see, so we give him the chance to make a mistake by checking behind -- I didn't see that before. Thanks.

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I don't know where you got the 28% figure--the check-raise doesn't have to be successful nearly that often. Quick calculation says 13%.

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Risk 2 to win 5. 2/7 = 28%. no?