Oddity around depths 7-8 with Stockfish 6 & 7

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KWRegan
Posts: 18
Joined: Wed Aug 19, 2015 9:06 pm

Re: Oddity around depths 7-8 with Stockfish 6 & 7

Post by KWRegan »

I re-ran the data for Elo 2600--2800 after modifying one line of the Stockfish 7 code to forbid move-count-based pruning at PV nodes. Doing so greatly reduced the numerical issue shown by my tables at depth 5, but seems not to have completely removed it. I have updated my post https://rjlipton.wordpress.com/2016/01/ ... l-at-zero/ on the Gödel's Lost Letter blog accordingly. Here are the old and new tables.

Old, using the official Stockfish 7 release:
Image

New:
Image

Still registers 6--10 times more large mistakes at depth 5 on the same moves as Komodo 9.3 does. Perhaps I may combine the single-line edit stated in the post with one or more suggestions given here.
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