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  #11  
Old 12-23-2005, 01:42 AM
Mr_J Mr_J is offline
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Default Re: Heads Up SNG standard D

You can make sure not overbetting, but you can't adjust your 'bet size' (ie tourney buyin).
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  #12  
Old 12-23-2005, 05:42 AM
cardsharkk04 cardsharkk04 is offline
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Default Re: Heads Up SNG standard D

So you are saying he needs $1800 to play $10 sit n go's?
Is it just me or does that sound like a fricking huge bank roll. I thought 30/40 buyins was plenty. I guess I could be way off...........
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  #13  
Old 12-23-2005, 02:25 PM
BillC BillC is offline
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Default Re: Heads Up SNG standard D

bankroll=-ln(r)v/(2E) where v=variance, E=expectation, and r=risk of ruin.
You bankroll is your total wealth (including future earnings) minus expenses, not your "gambling bank", or "what you can afford to lose"
You can Kelly bet by changing buy-ins, moving up or down according to bankroll.

Btw E=.6 is um, optimistic.
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  #14  
Old 12-23-2005, 03:37 PM
Chipp Leider Chipp Leider is offline
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Default Re: Heads Up SNG standard D

[ QUOTE ]
but you can't adjust your 'bet size' (ie tourney buyin).

[/ QUOTE ]

Why wouldn't you? Actually, w/ the ability to multi-table proportional betting is quite feasible, since you have the ability to increment much more precisely (compared to a one-tabler).

Of course the general hassle makes this unpractical for the large majority. You're familiar w/ BJ, correct? I suggest looking into TH's "mini-bank" concept, seems to be (IMO) the best way of approaching the problem, short of CE anyway.

My .02 bb's.
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  #15  
Old 12-23-2005, 04:30 PM
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Default Clarification

The game is HEADS UP (that is, one on one) sit-n-go where our hero wins 60% of his matches and loses 40% of his matches. This translates into an ROI of 9% per match given that the buy-in is 10+1 or 20+2 or 50+5. What is the smallest number of buy-ins that hero must have in his bankroll so that he will have a risk of ruin of ZERO?
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  #16  
Old 12-23-2005, 04:58 PM
Chipp Leider Chipp Leider is offline
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Default Re: Clarification

[ QUOTE ]
What is the smallest number of buy-ins that hero must have in his bankroll so that he will have a risk of ruin of ZERO?

[/ QUOTE ]

Infinite, clearly.
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  #17  
Old 12-23-2005, 05:00 PM
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Default Re: Clarification

How about 1% risk of ruin?
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  #18  
Old 12-23-2005, 05:23 PM
Chipp Leider Chipp Leider is offline
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Default Re: Clarification

[ QUOTE ]
How about 1% risk of ruin?

[/ QUOTE ]

Assuming a net return of $.99 and an SD of $6.9, about $111, so like 10 buy-ins.

<edit:> Provisos: You do not vary in stakes after any swings, you do not withdraw funds from the bankroll, and your goal is to at least triple your stake.

I'm sure Bill will correct me if anything I'm saying is off here.


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  #19  
Old 12-23-2005, 08:03 PM
BillC BillC is offline
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Default Re: Clarification

I am not sure what units his SD is in: $ or buy-ins. But for a
1% risk of ruin you need to have a bank of about 2.5 times variance/EV.

Bill C
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  #20  
Old 12-24-2005, 11:53 AM
Izverg04 Izverg04 is offline
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Default Re: Clarification

Uh, this is a heads-up game. You don't specify SD, only winrate, SD then follows. SD~$10 for a wide range of winrates. In the specified case SD=$9.8.

1% BR=-ln(0.01)/2 * 9.8^2/1 = $221 = 20 buy-ins
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