Search found 400 matches

by jhellis3
Wed Nov 20, 2019 4:49 pm
Forum: Computer Chess Club: General Topics
Topic: Crystal solves a 74 mover ... in 11 seconds
Replies: 14
Views: 1237

Re: Crystal solves a 74 mover ... in 11 seconds

I can confirm the latest version of Crystal no longer holds on to the mate score. This is likely due to some underlying changes in upstream stockfish which have been merged. I'll investigate and see what I can do...
by jhellis3
Wed Nov 06, 2019 10:48 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish with and without contempt
Replies: 36
Views: 2384

Re: Stockfish with and without contempt

If you create a git branch with the change, you can just pull master into it and it will auto merge as long as no changes have been made to the contempt code upstream.
but I need the correct score.
Well, the chances you aren't getting that are about the same regardless.
by jhellis3
Wed Nov 06, 2019 10:28 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish with and without contempt
Replies: 36
Views: 2384

Re: Stockfish with and without contempt

I really don't think it can be quite as bad as you make it out to be (if used reasonably). The eval of any engine is already uncertain (other than hard cutoffs). So if one has uncertain nodes that eval as draw, they could just as well not be. Which is why SF's evaluate.cpp has received many patches ...
by jhellis3
Wed Nov 06, 2019 2:34 am
Forum: Computer Chess Club: General Topics
Topic: My predicted 3rd Gen threadripper prices
Replies: 42
Views: 2489

Re: My predicted 3rd Gen threadripper prices

I would guess they will want something at the $999 price point, so I would guess that for the lowest end, $1199 max. Top tier, I'd go $2999 max but I'm less certain of that. The 28 core skylake-x is $2978, so yeah I'd go upper bound of $2999 but likely less.... maybe $2699? As for site reliability w...
by jhellis3
Tue Nov 05, 2019 9:44 pm
Forum: Computer Chess Club: General Topics
Topic: Hard pawn endgame
Replies: 11
Views: 929

Re: Hard pawn endgame

This is difficult. The best problems solver = Crystal is clueless after 10 minutes. It don't reach enough depth I think. It is a good test position. Unfortunately, Crystal has no mechanisms in place to deal appropriately with such positions. However, it is pretty clear how one might address the iss...
by jhellis3
Tue Nov 05, 2019 3:48 pm
Forum: Computer Chess Club: General Topics
Topic: LCZero blunders in TCEC cup 4
Replies: 20
Views: 2314

Re: LCZero blunders in TCEC cup 4

It depends on what input features the NNs have access to and how they are trained. For A0, it was certainly possible that such an effect occurred (due to the presence of movecount). For LC0, the likelihood & potential impact is much less as it does not have movecount as an input. It does still have ...
by jhellis3
Thu Oct 31, 2019 9:39 pm
Forum: Computer Chess Club: General Topics
Topic: Tactics cannot be very important for chess
Replies: 90
Views: 5135

Re: Tactics cannot be very important for chess

Dann Corbit wrote:Adding points to the existing score is a stupid way to solve it.
This is actually a very funny statement :D .
by jhellis3
Wed Oct 30, 2019 7:13 pm
Forum: Computer Chess Club: General Topics
Topic: Tactics cannot be very important for chess
Replies: 90
Views: 5135

Re: Tactics cannot be very important for chess

I would say NNs have the *most* tactical potential due to superior move ordering & eval. The issues present in the most prevalent networks are more the result of search, training method(s), and input parameters (lack thereof) than any inherent deficit in NNs themselves. Just my 2cp anyway.....
by jhellis3
Wed Oct 30, 2019 2:11 am
Forum: Computer Chess Club: General Topics
Topic: "Fat fritz" stronger than Stockfish ?
Replies: 79
Views: 14438

Re: "Fat fritz" stronger than Stockfish ?

It isn't like 42850 is a very high bar.... I'm sure the Chinese already have private nets +200 or 300 Elo....