What is seldepth?

Discussion of chess software programming and technical issues.

Moderators: hgm, Rebel, chrisw

konsolas
Posts: 182
Joined: Sun Jun 12, 2016 5:44 pm
Location: London
Full name: Vincent

What is seldepth?

Post by konsolas »

I've recently started writing my own chess engine, and as a result I've been checking out several other engines to see how the work.

One thing I've noticed is that nearly every engine includes a "seldepth" parameter when displaying search info. For example: Image

What does this mean?
elcabesa
Posts: 855
Joined: Sun May 23, 2010 1:32 pm

Re: What is seldepth?

Post by elcabesa »

the depth is the depth you are searching, but in the search some path are searched deeper or shallower. Seldepth is the max depth reached in the search.
For some engine it's calc only for PV nodes, some other calc it over the full tree.