re: Poker & Check raise as Bluff
It works pretty well from the blinds with a crappy board. If you limp in from the blind and check a crappy board, then someone in late position makes a bet; when you raise it looks like you hit two small pair with random weak cards, then checked to make sure somebody who limped with a small pair didn't hit trips, and are trying to take out somebody who made a position bet with air. People in early position are going to think twice about calling, because the initial better might have a hand and reraise. Even the initial bettor might fold top pair and will usually fold a draw. If the initial bettor calls, he might have two overcards, and if a low card comes on the turn, you might fold him with a second bullet.