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Subject: Star Diamond's battery life data and a guess as to its rating constant

Author: J. C. Boco

Date: 05:29:58 03/10/04


35 hours 17 minutes running on alkaline Rayovac batteries.  I'm going to use
those ultra ones next time (I think they use Li) and expect to get above 50
hours.

When I got the low battery light, I kept playing for over an hour.  Then the
following game I got a lot bat. light, and while the sound and LED lights
functioned just fine, the LCD display was screwy.

Interesting that the sound wouldn't be disabled first since that would take more
power.

Oh, By the way, I'm a bad Class C player.  I have played 40 moves in 2 hours.  I
have set the computer to play mostly at 40 moves in 2 minutes, but sometimes it
had up to 5 minutes and sometimes as low as 40 seconds.  My record:

0 = 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0

Also interesting, if I use as a constant the number 100 in the Log equation
determining playing strength for a computer (100 points per doubling), then
based on the various time controls I have played my TPR for all these games
would have been 1380, only about 35 points lower than my real USCF rating.



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