Search found 413 matches

by jhellis3
Wed Apr 01, 2020 2:01 am
Forum: Computer Chess Club: General Topics
Topic: Mate solving comparison (10 - 19 moves)
Replies: 41
Views: 4201

Re: Mate solving comparison (10 - 19 moves)

Hey Mike, do you happen to have a branch up with this new multi-pv code? I would like to study it a little :).
by jhellis3
Tue Mar 31, 2020 4:31 pm
Forum: Computer Chess Club: General Topics
Topic: New engine: a0lite
Replies: 15
Views: 1335

Re: New engine: a0lite

Ok, I've forked it, done some tinkering, and I *think* I have badgyal installed and working properly. Played a few games against Crystal and it seems to make mostly reasonable moves before getting destroyed. I am not very familiar with python though.... been at least 20 years... Question: Once I mak...
by jhellis3
Mon Mar 30, 2020 5:12 pm
Forum: Computer Chess Club: General Topics
Topic: New engine: a0lite
Replies: 15
Views: 1335

Re: New engine: a0lite

I don't really know python syntax but I am guessing

Code: Select all

if turnfactor > 0:
	current.number_visits += 1
in the while loop would get the job done.
by jhellis3
Mon Mar 30, 2020 4:39 pm
Forum: Computer Chess Club: General Topics
Topic: New engine: a0lite
Replies: 15
Views: 1335

Re: New engine: a0lite

This seems like it would be a good test bed for ideas; I wonder what happens if one only increments visits for own moves...
by jhellis3
Wed Mar 25, 2020 5:07 pm
Forum: Computer Chess Club: General Topics
Topic: TCEC: Allie's Missed win against Fire
Replies: 9
Views: 594

Re: TCEC: Allie's Missed win against Fire

I don't have very good hardware but Crystal switches to Ra1 fairly quickly and sticks with that. 4 threads, 2GB hash, 5m TB.

Starts to really fail high at ~depth 36...
by jhellis3
Sat Feb 29, 2020 12:22 am
Forum: Computer Chess Club: General Topics
Topic: Supposedly a mate in 12
Replies: 6
Views: 932

Re: Supposedly a mate in 12

The correct answer is white is missing a piece.
by jhellis3
Wed Feb 19, 2020 4:51 pm
Forum: Computer Chess Club: General Topics
Topic: 83 nice Testpositions (Long and big post).
Replies: 103
Views: 29296

Re: 83 nice Testpositions (Long and big post).

Is the feeling that the fortress detection code is totally reliable? I will try to answer, but I'm not sure what "totally reliable" actually means.... To put it most simply, it will be as reliable as the robustness of the underlying search. So yes, you can get false positives. But this is not due t...
by jhellis3
Wed Feb 12, 2020 7:17 pm
Forum: Computer Chess Club: General Topics
Topic: Funny fortress position
Replies: 30
Views: 3430

Re: Funny fortress position

Tthe static eval of the position (for game cycles) is discounted based on proximity to the 50 move rule, and that always happens. Whether or not it is extended depends on: PvNode ? extended : depth < 5 ? extended : not extended. I suppose it is possible to get some non-pv cutoffs at depths 6 or high...
by jhellis3
Wed Feb 12, 2020 6:44 pm
Forum: Computer Chess Club: General Topics
Topic: Funny fortress position
Replies: 30
Views: 3430

Re: Funny fortress position

But at leaves there's no option left for searching. Bruh... again. Sure there is... you extend the search . Crystal doesn't have trivial game cycle leaves which are not hard cutoffs ;). Of course you can't do this for every trivial cycle node due to practical time considerations (so it is limited i...
by jhellis3
Wed Feb 12, 2020 5:56 pm
Forum: Computer Chess Club: General Topics
Topic: Funny fortress position
Replies: 30
Views: 3430

Re: Funny fortress position

Just asking for better static evals of near-tablebase positions :D. Bruh, that is 12m.... we don't even have 8m. Meanwhile, the method I implemented handles arbitrary piece count.... Bonus: If you happen to read the code, you will see it accomplishes the results it does by altering the static eval ...