Check-raising to induce a reraise.
This is a tactic which I've used with a lot of success in certain situations and think it's worth a discussion. Essentially, the idea is that when the board suggests certain very powerful hands, and when you yourself have a well-concealed monster which beats those that the board suggests, oftentimes it can be profitable to check-raise and induce a large reraise from a player who actually has one and is confident in his holdings.
Here is an example from today. A couple players limped in, I was in the small blind with two small connecting cards, called the big blind, and the big blind checked. The flop came up paired, but I flopped an open-ended straight draw. I checked, everyone else checked and on the turn I make the nut straight. I check, the big blind makes a pot-sized bet, it folds to me and I make a minimum raise because I suspect he has a set. He reraises all-in, I call, and win the pot. Granted, I took a risk in assuming that he didn't have a boat, and many cautious players won't be liable to reraise in this situation without one, but many will, and that is what makes the play profitable, I believe.
In another situation, a few players limp in, and it folds around to me in the big blind with 6-7 offsuit and I check. The flop comes 6, 6, 7 with two clubs. It checks around to a player in middle position who bets the pot, it folds to me and I call, suspecting the middle position player is on a flush draw. The turn brings a third club, and so I check to watch what the player does. He makes another pot-sized bet and at this point I'm almost certain he was on a flush draw, and I raise, representing a set. He reraises all-in, I call, and he shows A-x of clubs.
Basically, in both situations the idea was that the board suggested the possibility of strength from my opponent, and so I check-raise, which shows a strong commitment to the hand, to induce my opponent to come over the top with a powerful second best hand.
