"It just isn't conceivable that you can design a program strong enough to beat players like me."

August 28, 2014

Blitzoid chess engine ratings for Android: Calibration time

If i've posted nothing after round 15 doesn't mean the gears were not turning. The overall trend appears to be less elo fluctuations, better score percentages between 45% and 55% and what's more catchy is that the list does not shrink or inflate since round 17.

This means obviously that the experiment is almost at the end and there's nothing more but smallest fine tunings which will only narrow the error margins of the elo calculation.

Maybe it's clever to stop blitzing soon and concentrate to longer time controls and more programs from various platforms using all this testing experience. Yes, that's shifting to RAPIDROID project, based on 30 minutes games or similar.

Meanwhile, soon before the Blitzoid round 20 is finished, i've thought it's time to give an overall update to the only blitz rating list of Android engines available worldwide!

I'd written about my doubt about the possibility that the list is completely underevaluated and might possibly need an uplift.

I've been looking around at SSDF and CCRL lists to extact the engine versions i could compare between Android and Windows.

It appears that there is less power gap between the reference cpu's they are using to test Windows engines and my humble Exynos 4412 running at 1.6ghz x 4 cores.

The power ratio seems to be roughly 3 to 4 times. So, even after adding 250 elo points to Blitzoid, there's still 100 to 200 elo gap remaining.

Some other games played against oldies and tabletop chess computer have also supported this adjustment.

Therefore, i will very soon publish a new list based on around 16K games with a/m +250 points and will probably stop at 20th position on 50 Silver Suite Openings.

I think RAPIDROID will be much more apoealing because it will cover not only Android uci engines but many other programs and machines, from various operating systems and various times. I won't give up remembering the fossiles of computer chess history.

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