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Checkraising range and sizing OOP on a Tc4d5d Checkraising range and sizing OOP on a Tc4d5d

12-13-2017 , 01:18 PM
CO opens for 1/2-pot and BTN calls. The flop comes Tc 4d 5d.

When OOP on this flop we should mainly check. But if we check and BTN bets 1/2-pot, what should our checkraising range be? And also what is a good sizing? I have some trouble understanding this from a theoretical point of view. I understand that the more polarized our checkraising range is, the bigger we should raise in general. But should we be polarized on this board?
Checkraising range and sizing OOP on a Tc4d5d Quote
12-13-2017 , 02:49 PM
I could tell you Snowie's strategy for this spot (see below), with the proviso that it won't necessarily be useful for the game you're playing (vs your typical opponents), but it will give you an idea of the general principles.
Assuming you're checking the flop about 80% of the time, then a decent check-raising range (using half pot for the sizing) is going to be comprised mostly of sets for value and flush draws (including TP+FD) and 76s as semi-bluffs. You want to raise hands that have robust equity vs villain's continuance range (because you don't want to bloat the pot OOP and be barreling with no chance of sucking out). It would likely be a mistake to go extremely polarized and raise some complete nonsense hands, because the BTN isn't going to fold at an exploitable frequency.
In short, you need some solid equity. Monsters and big draws (8 outs+) have that solid equity. If you go with a bigger size, you probably need to be even stronger in this spot (so you'd have an even lower raising frequency than 6%), as there aren't a whole lot of hands in your range that want to play for stacks.

Snowie's raising strat for this spot at 100NL:


(There are a few more FDs, plus 76s and 87s, that are beyond the scrollbar).
Note that some of those check-raising combos are c-bet at some frequency, so it's not as if all the sets and all the draws always check and always raise (some sets check-call too). There's a lot of mixing.

As always, if you put the spot into Pio or another solver and provide different ranges for the player than Snowie expects, you'll get a different strategy. Hope this helps!
Checkraising range and sizing OOP on a Tc4d5d Quote
12-14-2017 , 07:11 AM
If your simplifying to a check range strat OTF, which I think is fine. I think you should x/r quite aggressively, because most IP players response to a check-range strategy is by betting too frequently (at least in my pool). Against 1/2 pot CO v. BTN SRP, I think you can x/r sets, diamond draws, strongest Tx occasionally, some overpairs that really benefit from the equity denial and also get plenty of value from V's Tx, and some non flushing draws too.
Checkraising range and sizing OOP on a Tc4d5d Quote

      
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