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3-ply vs. 4-ply rollouts

Posted By: Matt Ryder
Date: Friday, 7 January 2011, at 5:55 a.m.

In Response To: 3-ply vs. 4-ply rollouts (Kye Hedlund)

Thanks Kye!

That summary of results is a fantastic resource! Very well done. I had been trying myself (rather futilely) to collate a similar list, so I know how much work you must've expended getting all this together.

My approach so far:

I started by importing all of Tom Keith's data, which is still the most complete archive of 2nd roll information available online (although it has certain gaps - such as a missing 32Z opening).

I then wrote a routine to convert the standard move notation he supplies into a source/destination matrix. I used that to supplement my data with a calculated GnuBGID for each move (so I can generate before and after boards). I'm also manually adding nactation symbols for each move.

Next I updated the equities with Stick's data. Now I want to update again with Nack's XG summaries.

So any decade now I'll have a viable and reasonably accurate store of useable 2nd roll information :-)

Your archive will be a big help in getting there!

Matt

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