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Old 12-22-2005, 04:15 PM
ThrillFactor ThrillFactor is offline
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Join Date: Feb 2003
Location: Lafayette, LA
Posts: 47
Default The Math behind a push...

Case 1: Villian calls a push about 10% of the time {AA-77, ATs+, AJo+, KQs} Hero is 28/71 vs villian's range.

cEV(fold) = 410,000
cEV(push) = .9(steals blinds) + .1(villian calls and hand plays out)
= .9(440,000) + .1[ (.28*615,000 )+ (.71*225,000) ]
= 429,195



Case 2: Villian calls a push about 25% of the time {AA-22, any ace, KTs+, KJo+, QJs, JTs} Hero is 35/65 vs range

cEV(fold) = 410,000
cEV(push) = .75(steals blinds) + .25(villian calls and hand plays out)
= .75(440,000) + .25[ (.35*615,000 )+ (.65*225,000) ]
= 420,375




So...

Definitely +cEV, but only marginally (+1BB when your stack is 20BB) and it gets worse as your opponent's range loosens.

IMO, risking too much for too little given your stack and ability to use it.

I think this is a perfect example of passing up a marginally +EV bet now if losing it will cost you the opportunity of making an even greater +EV wager down the road.


That being said, many times I limp here and bet any flop.


[i]Edit: in case it's not evident from my post, I think raising the calling a push is bad, bad, bad. I'm either pushing (which I wouldn't have done at the time, and I think the math justifies that decision), limping, or folding. The limp/fold decision is based upon how active villian has been preflop.
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