[elindauer]

Here are a few questions that occur to me:

1. Why are you check-raising the flop? You can't possibly hope to make an ace fold, and the board is about as draw-free as one can imagine. I think calling on a kind of slowplay here is better, as you are happy to let people call with pocket pairs, king-high, etc. The only time raising is good is if someone has a 9 AND no one has a better ace. Play it a little slower and let those terrible limpers make big mistakes.

When you fold the turn, did you notice that you have a ton of outs to chop against a better ace? He probably doesn't hold AK-AQ since he didn't raise preflop.

What is the point of betting the turn? Is there some draw you are trying to price out? You wouldn't want a pocket pair to fold if your check will cause him to call the river unimproved. He called the flop check-raise... how can you be ahead at this point? Do you think he has a 3? You say he is an unknown, but it should be immediately obvious by the way he handles himself whether he has a clue or not.

Good luck.
Eric