September 14, 2010
How a range can shift
Bankroll $118 - I'm still mostly playing 2nl, whilst I focus on my decisions and ensure I have tamed some of the bad aggressive leaks I have spoken about.
I posted a hand in the forums last night that I thought was interesting:
No reads on villains (8 hands)
Full Tilt Poker $0.01/$0.02 No Limit Hold'em - 5 players -Â View hand 923181
The Official DeucesCracked.com Hand History Converter
BTN: $1.17
SB: $2.21
BB: $2.13
UTG: $0.21
Hero (CO): $2.20
Pre Flop:Â ($0.03) Hero is CO with KÂ
 A 
1 fold, Hero raises to $0.07, 1 fold, SB calls $0.06, BB calls $0.05
Flop:Â ($0.21) AÂ
 2Â
 6Â
 (3 players)
SB bets $0.08, BB calls $0.08, Hero raises to $0.56, SB folds, BB raises to $1.04,
The general consensus was that there is no reason to lay this down as we get value from draws and some weaker aces. I agreed with that statement but its very interesting to evaluate in spots like this:
Small blind donks into us. This is usually a sign of a hand he's turning into a bluff.  We'll come back to the small blind later as his presence in the pot does affect things, but for now let's concentrate on the big blind at the point where he limp-reraises us
Lets try and put him on a range. Pocket pairs will be in there and we will have to tweak it a bit, but lets start with the obvious - 22,66,AA - Obviously I'm crushed but just for fun:
AA,66,22 = 94.848%
Now it's no hard stretch to imagine that the big blind is overcalling preflop with a much wider range of strong  and also speculative hands when he's closing the action in a multiway pot.
We could look at his full range preflop, which is probably any pair, a lot of suited aces, suited connectors even a number of offsuit broadway hands that he makes a mistake in calling oop (It's 2NL don't forget)
22+,A2s+,K6s+,Q9s+,JTs,T9s,98s,87s,76s,65s,54s,43s,32s,ATo+,KTo+,QTo+,JTo = 13.085%
Well on this flop I'm crushing them! But hold on a moment. We are in position and there is action ahead of us. Free information that we must consider. (That's the whole reason we want to play in position)
We can use that information to narrow his range:
So SB donks and BB calls. He's clearly not doing this with all his missed draws.Â
He has some equity in the hand when he calls behind. Assuming he's not tilted or otherwise disadvanteged, Calling behind on an ace high two tone flop with the pre-flop raiser still to act is a big decision.Â
I don't think he does it with air. I do think he does it with worse aces and all his flush draws,
possibly pocket pairs he's decided to re-evaluate on the turn. We take all the suited kings out as I have the Kd
22+,AdQd,AdJd,AdTd,Ad9d,Ad8d,Ad7d,Ad6d,Ad5d,Ad4d,Ad3d,Ad2d,
QdJd,QdTd,Qd9d,JTs,Td9d,9d8d,8d7d,7d6d,6d5d,5d4d,4d3d,3d2d,ATo+ = 19.784%
Ok so we still have him crushed - let's add the small blind on the same range and our equity is 64.101% - so we can bet for value.
Small blind folds, big blind min-reraises.Â
The min re-raise is such a strong play. I really think we can polarise him to suited aces and sets now:
AA,66,22,AdQd,AdJd,AdTd,Ad9d,Ad5d,Ad4d,Ad3d,Ad2d = 94.84%
And we're crushed and should fold.
You could argue that his min re-raising range is the same as his oop flatting range but I really find that hard to believe.
What's fascinating though is how quickly the equity changes with only a handful of worse pocket pairs in there! Simply add KK and QQ into the mix  and suddenly we're even Stevens. If he EVER tries to bluff me here, even if we only give him 3 combinations of QQ that he went on tilt with, we are at 30% and cannot fold.
Thoughts?

5 Comments:
TecmoSuperBowl posted on September 14, 2010 at 15:03 PM
What it really comes down to is the quality of your opponents. You have far more experience than me at 2nl and will be able to gauge their competency better than I, but I'm guessing, even though it doesn't make sense, that we can still include some % of bare flush draws. 22/66 is definitely in his range, but he just flatted the flop even though there is a flush draw out there so that makes me a bit more hesitant to say they make up most of his range. The other thing to point out is the Ad is on the flop. This means he can't have Adxd and you need to take all of those suited Aces out of your estimation of his range.
ron0914 posted on September 14, 2010 at 15:22 PM
"You need to take all of those suited Aces out of your estimation of his range."
Well that's a dumb error that buggers the theory up - And I have the Kd...
itsatrap posted on September 14, 2010 at 15:23 PM
your range is off... he can't have suited aces since Ad is on the board. He can repop with any off suited or Ax and suited (nondiamond) Ax as a miniraise often in NL2 isn't as strong as you would think. You can also add PPs 77+ since (especially TT-JJ) NL2 players will do this kind of goofy plays.
this is NL2 and being an unknown I often treat them as playing with a standard NL2 player range (thinking ax is teh nuts, PPs unfoldable, flush draws are shove material, etc) unless he does a play which makes me say AH-HA and then I take a note.
Also your raise to 56c at that point is decent but a bit large (although you can extract tons of value from players with weaker hands at this level which is good). if you had raised to 32c and he min raised to 64 then obviously your SPR would have been different and somewhat worth considering... maybe even a call... but as it stands with his repop the SPR of (near if not better than) 1:1 I am confident I am committed... plus random NL2 tendancies just too much to let go.
run the ranges again remodified and let me know the equity as I am curious and don't have stove on me at this local
ron0914 posted on September 14, 2010 at 15:28 PM
So that's why stove had him as such a favourite
Still stands that if we give him AA,66,22 and only one pocket pair, perhaps 33 to give him a runner runner wheel draw I'm still 56/44 priced in.
Shame I buggered the analysis up, I quite liked that post :(
ron0914 posted on September 14, 2010 at 15:29 PM
"Also your raise to 56c at that point is decent but a bit large"
There you go - There's always leak ion every cooler!
Thanks
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