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Rollout

Posted By: Rich Munitz
Date: Tuesday, 11 August 2009, at 7:35 p.m.

In Response To: Rollout (ScottyK)

"It is reported that Snowie 3-Ply is same as GNU 2-Ply. It appears that there is substantial deviation. Don’t know were that claim is supported or confirmed."

I think you are confused as to what "the same" means.

What it actually means here is that Snowie 3-Ply is looking the same number of rolls ahead to find the correct move as does GNU 2-Ply. Snowie starts numbering its plies at 1-Ply and GNU starts numbering them at 0-Ply. So from that perspective they are the same (equivalent is a better word). Its like having two three-story buildings - one labels the ground floor zero (and the elevator has buttons 0,1,2) while the other labels the ground floor one (and the elevator has buttons 1,2,3). The top floors are equivalent in terms of height above the ground even though they have different numbers.

However Snowie is not GNU and vice versa. They use different Neural Nets to evaluate positions. You can't expect them both to look at the same position and come up with exactly the same answer any more than you can take two equally skilled humans and expect them to always exactly agree.

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