Poker Stars, $0.05/$0.10 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.
SB: $10 (100 bb)
Hero (BB): $24.49 (244.9 bb)
UTG: $11.86 (118.6 bb)
MP: $7.26 (72.6 bb)
CO: $10.32 (103.2 bb)
BTN: $5.86 (58.6 bb)
Preflop: Hero is BB with T
9![]()
UTG raises to $0.30, 4 folds, Hero calls $0.20
Flop: ($0.65) K
Q
J
(2 players)
Hero checks, UTG bets $0.50, Hero raises to $1.60, UTG raises to $4, Hero raises to $24.19 and is all-in
Preflop: UTG plays 25/18 in 61 hands, so will assume he is a reg. No info on his positional stats. So will play default ranges vs him, which means this:

Flop: He cbets $0,50 into pot of $0,65, so the fold equity he needs is 0,50/(0,50+0,65)*100 = 43,48%. His flop cbet% in the sample size is 75%, so I will assume he is not out of the line with this and I will defend 100%-43,48% = 56,52% of my preflop cold calling range. Since I cold call the range of 8,9%, I have to defend the range of 8,9%*56,52/100 = 5,03% on the flop. Probably something like this:

(5,28%)
The question is do I have a check/raising range on that board or I defend everything by calling? What bothers me is that it's relatively easy to find value check/raising range and that will be QQ, JJ, ATs and T9s (not sure for KQs). It's range of 1,51%. The problem is which hands should I check/raise as a bluff, since it seems that all the other defending hands are good enough for check/calling. For example, why would I bluff check/raise with AK? Furthermore, ratio of bluff check/raising range and value check/raising range should theoretically be 2:1, which means that I should check/raise almost entire preflop defending range.
On the other hand, it's weird not to check/raise for value/protection since there are alot of turn cards that could be bad for us, so I don't believe that the solution is not to check/raise at all.