Search found 313 matches

by jorose
Fri Jul 24, 2020 8:22 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: NNUE accessible explanation
Replies: 16
Views: 9529

Re: NNUE accessible explanation

I think in general a lot of why certain architectures are chosen over others boils down to "because we tried others and this worked the best". That's not to say there is no justification, just that it's not black and white. Perhaps, however, I can give you a bit of my intuition with different aspect...
by jorose
Thu Jul 23, 2020 2:12 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: NNUE accessible explanation
Replies: 16
Views: 9529

Re: NNUE accessible explanation

Hi Martin, cool to see you around here again! It is indeed a bit difficult to find non-Japanese sources for NNUE and it put me off a bit in the passed. You can find a nice compendium of sources here . Still a lot of them are in Japanese, but I still think its quite useful. Based on my understanding ...
by jorose
Wed Jul 01, 2020 1:31 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: knodes/s halved after improving eval
Replies: 6
Views: 1385

Re: knodes/s halved after improving eval

Eval changes can be tested with fixed nodes per move games. Just wanted to chime in here to mention that Brian probably is referring to small changes and tweaks to the evaluation function. Larger changes can effect how fast the engine can search nodes, as you described finding out yourself in this ...
by jorose
Mon Jun 29, 2020 4:39 am
Forum: Computer Chess Club: General Topics
Topic: How good is your engine?
Replies: 32
Views: 5198

Re: How good is your engine?

I gave Winter the first position from this thread, not expecting it to find anything. Indeed it struggled and I gave up on depth 40, only to see that the bestmove UCI output was the right move! After starting the search again it was printing the correct line form the beginning :) info depth 28 selde...
by jorose
Thu Jun 18, 2020 3:30 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Open Swiss Edition III
Replies: 62
Views: 14988

Re: Open Swiss Edition III

Hi Sergio,

I saw you are working on a new website! The design looks nice and I am looking forward to when it is closer to finished.

Naturally, I would like to enter Winter in the tournament! :D

Regards,
Jonathan
by jorose
Thu Jun 11, 2020 5:23 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: FGRL rating lists - Winter 0.8, Pirarucu 3.3.5, Marvin 3.6.0
Replies: 5
Views: 1236

Re: FGRL rating lists - Winter 0.8, Pirarucu 3.3.5, Marvin 3.6.0

Nice writeup and I like your thought experiment with SF "do nothing". I agree that a large part of Winter's scaling probably comes from bad fast TC performance and low N/s relative to other classical engines. I do wonder how best to to measure scaling. Assuming equivalent definition of a node, one w...
by jorose
Thu Jun 11, 2020 7:36 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: FGRL rating lists - Winter 0.8, Pirarucu 3.3.5, Marvin 3.6.0
Replies: 5
Views: 1236

Re: FGRL rating lists - Winter 0.8, Pirarucu 3.3.5, Marvin 3.6.0

Thank you for testing Winter at LTC!

It kind of fascinates me how Winter is between Texel and Igel in the rapid list which are 129 and 94 respective Elo above it in the bullet list.
by jorose
Sat Jun 06, 2020 10:08 am
Forum: Computer Chess Club: General Topics
Topic: Good test move for weaker amateurs
Replies: 3
Views: 634

Re: Good test move for weaker amateurs

I checked Winter and rather unsurprisingly it found Bf4. More surprising is it found Bf4 at depth 1!

It took until depth 14 to reject axb5, so I think it is safe to say that it felt positionally opening the a-file was just pretty good compensation for white.
by jorose
Wed Jun 03, 2020 6:53 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: asymmetric evaluation and TT
Replies: 8
Views: 3240

Re: asymmetric evaluation and TT

The actual issues with assymetric eval arises when you consider the AB-framework. E.g. when you consider null window searches, the search can fail high and return beta. However, if the same position would be evaluated in the parent node it could also fail high.
by jorose
Wed Jun 03, 2020 6:29 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish NN release (NNUE)
Replies: 227
Views: 88663

Re: Stockfish NN release (NNUE)

I can recommend pgn-extract for converting .png s to other formats.