Quote:
Originally Posted by jogden139
the one thing that confuses me the most about icm or chipev is that when your calculating whether its profitable or not its all based on your opponents calling ranges. which we assign general guidelines.. and i think thats the tricky part... GENERALIZING calling ranges for all players but theres so many factors and so many players have so many different perspectives of the game
There are a few things I've noticed about hand ranges and cEV pushbotting:
I. One can add or subtract a few hands without substantially changing the equity of the hand when the villain does call or push. Here's the 77 hand against some heads up ranges:
Code:
equity (% of all hands) range
42.097% (10%) {77+,A9s+,KTs+,QTs+,AJo+,KQo}
45.765% (15%) {77+,A7s+,K9s+,QTs+,JTs,ATo+,KTo+,QJo}
48.397% (20%) {66+,A4s+,K8s+,Q9s+,J9s+,T9s,A9o+,KTo+,QTo+,JTo}
Even though we've doubled villain's range, our equity with 77 has only increased 6.3%. In these situations, debating whether or not a villain is going to call or push with KQ isn't as interesting as whether he'd call with any two cards or a mere 10% of hands.
Of course, if we're pushing, one villain calling twice as often as another means we steal the blinds less frequently with the looser opponent. And if we're pushing with junk, the fold equity makes for most of the positive EV of a push.
II. Pretty much any junk offsuit hand has about 30% equity against all but the tightest ranges.
III. After the top 35% of hands or so, the only hands left are junk suited and unsuited hands. An opponent pushing or calling with T7s might as well be doing it with 32o.
Overall, when choosing cEV pushes at the table, I try to guess my opponent's calling or pushing range as "tight" (10%-15%), "loose" (25%-30%) or "any two" and not to get any more specific than that.
ICM is what gets me. For an MTT'r like myself, the natural tendency when stacks get low and tables get shorthanded is to get hyperagressive and push nonstop. However, the consequence of diminishing returns of chips means that we must play tighter and choose spots with more cEV.
I have noticed, however, that when there are one or two stacks with 1-2BB at the FT of a 45, one has to get really tight until they bust. I'd come up with an example, but it's late and I'm tired.
How I pine for my naive days where I'd push about 75% of the time 4-handed.
There are programs that can do ICM simulations. SNGWiz is probably the most actively developed program and SNGPT is the granddaddy of this niche, but I've already used up my SNGWiz trial and I don't want to buy it until I have the bankroll for the $12 turbo 45s and 180s. But enough about me.
I'm sure someone's going to mention
Kill Everyone or that 2+2 SnG book whose name escapes me, and I should probably read them instead of trying to write long, rambling essays about subjects I admittedly know barely anything about.