[holdem2000]

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Hand 1: IMO, there are only 2 options, raise or fold. Calling just shows inferiority. I'd make it 4 or 5xBB and punish the limper.

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Hand 2: You should probably never raise here without a villain-specific reason to. Calling vs. folding is probably pretty borderline... obviously knowing your opponent's stats is paramount for this decision, but versus a complete unknown, I'd say it just depends on how confident you are in your postflop game. Also depends on your image a little bit if the villain has reads on you.