Hi all,
One aspect of the uci protocol I am not 100% sure about is seldepth. How do you calculate this? Is it the maximum depth qsearch has reached? How does it combine with extensions?
Side question: should the depth we send in info string should be the iterative deepening depth, or should we also account for extensions?
Thank you very much,
Louis
calculating seldepth
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AxolotlFever
- Posts: 50
- Joined: Sun Nov 11, 2018 9:26 pm
- Location: Germany
- Full name: Louis Mackenzie-Smith
calculating seldepth
My chess engine is Axolotl: https://github.com/louism33/Axolotl
And it uses: https://github.com/louism33/
Othello/Reversi: https://github.com/louism33/Mudpuppy
And it uses: https://github.com/louism33/
Othello/Reversi: https://github.com/louism33/Mudpuppy
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abulmo2
- Posts: 433
- Joined: Fri Dec 16, 2016 11:04 am
- Location: France
- Full name: Richard Delorme
Re: calculating seldepth
In Amoeba, I compute it as the maximum depth reached in qsearch.AxolotlFever wrote: ↑Sat Apr 27, 2019 2:38 pm One aspect of the uci protocol I am not 100% sure about is seldepth. How do you calculate this? Is it the maximum depth qsearch has reached?
I use the iterated depth.Side question: should the depth we send in info string should be the iterative deepening depth?
I also agree that both numbers, depth & seldepth, are barely related to the real depth reached in average during the search, due to extensions & reductions.
Richard Delorme
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elcabesa
- Posts: 855
- Joined: Sun May 23, 2010 1:32 pm
Re: calculating seldepth
some engine calculate seldepth as the max depth reached in search/qsearch, some other (i.e. stockfish) calculate the max depth reached by a PV node