Chuck,
Nice video. Looking forward to the rest of the series. A couple of comments:
(1) The math for your c/r bluff on KKQt is not quite right. First, you never accounted for the K's and Q's on board, which heavily lowers the combinations of Kx and Qx hands possible. Obviously, these are calculations which are never done at the table and there are several different calculations you need to do based on whether your bluff is to check/raise the flop and then check/fold the turn if called versus check/raising the flop intending to lead out on the turn (unless it's an obvious bad card).
(2) I disagree that waiting until the river to raise your flush is necessarily suboptimal versus typical, more aggressive players. I would still take that line some of the time versus almost any opponent. This particular board texture makes it a nice line because there are a lot of river cards where you won't want to raise and you'll be glad you didn't raise the turn. This is a good spot to mix it up against almost all player types.
(3) Again, I don't think the 86o calldown is that bad in a vacuum. Here, raising is definitely preferable, but the EV difference is not that huge. Your opponent is going to have decent equity against your hand with his entire range and when you have the lead, it is going to be harder to know when to valuebet the river. Here, of course, it helps that your opponent always has you beat if he check/raises the river. So (and maybe this is agreeing with you based on what you did), I like making this a calldown instead of a flop raise some of the time. In heads up you have to be prepared to deal with playing 3bet pots in position with weak holdings, and I think it is important that your opponent never really feels comfortable knowing what you have in these spots. So when your flop peel could mean that you have one pair that is going to showdown, a big hand that is going to wait until the turn to raise, a weak hand that is going to fold the turn unimproved, a draw that is going to semibluff the turn, etc. it makes it hard for your opponent to play well against you. On the other hand, if you 95% of the time you peel the flop you have a very weak hand trying to limp its way to showdown or worse, your opponent has an easier time navigating his way through 3bet pots out of position.
Edit: Also, DC mods, you should update the weekly calendar on the home page.
