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RE: EPC correction

From: Ian Shaw
Subject: RE: EPC correction
Date: Wed, 15 Jan 2020 11:21:35 +0000



An example:


Position: 5 checkers on the 1-point, 4 checkers on the 2-point.

1.     Pip count: 5x1 + 4x2 = 13

2.     epc: 4.410 (expected number of remaining rolls) * 8.167 = 36.02

3.     Wasted: 36.02 - 13 = 23.02

Useful articles about the Effective Pip Count are available at bkgm.com:






n  Ian



From: Christian Anthon [mailto:address@hidden]
Sent: 15 January 2020 08:46
To: Ian Shaw <address@hidden>
Cc: David Klausa <address@hidden>; address@hidden
Subject: Re: EPC correction


If somebody rewrites the text, I should be able to update the pages.


Cheers, Christian.


On Thu, Jan 9, 2020 at 1:34 PM Ian Shaw <address@hidden> wrote:

Hi David,


Thanks for the report.


Yes, this is an error. I’m not sure who maintains, those pages now.


n  Ian Shaw


From: Bug-gnubg [mailto:bug-gnubg-bounces+ian.shaw=address@hidden] On Behalf Of David Klausa
Sent: 08 January 2020 17:56
To: address@hidden
Subject: EPC correction


On GNUBG's discussion about EPC (https://www.gnu.org/software/gnubg/manual/html_node/What-does-epc-mean_003f.html), the example of 5 checkers on the 1-point and 4 checkers on the 2-point is a typical 5-roll position. Therefore, it appears to be an error to say that the expected number of remaining rolls is 2.189. A 5-roll position is elsewhere calculated to be an EPC of 36, not 17.878. So unless I am missing something this seems to be a mistake.

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