Search found 132 matches

by Fabio Gobbato
Tue Jun 13, 2017 8:32 am
Forum: Computer Chess Club: General Topics
Topic: New release Pedone 1.6
Replies: 13
Views: 3627

Re: New release Pedone 1.6

Thank you to inform me of this problem. I have very few time now but I will see in the next days what's the reason of that issue.
by Fabio Gobbato
Sat Jun 10, 2017 10:03 am
Forum: Computer Chess Club: General Topics
Topic: New release Pedone 1.6
Replies: 13
Views: 3627

New release Pedone 1.6

I have released a new version of my engine. The changes: Android executable Max Threads set to 128 Simplify king safety and increased sensivity Improved threatened pieces evaluation Tuning Added some more endgame knowledge Tuned reductions Improved history heuristic Tuned iid reduction formula Some ...
by Fabio Gobbato
Sat May 20, 2017 5:10 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Probe EGT in quiescence?
Replies: 28
Views: 5318

Re: Probe EGT in quiescence?

In search and qsearch I probe only wdl. Syzygy are compressed. I haven't tried with a shorter time control, I think that with a short tc there wouldn't be much improvement.
by Fabio Gobbato
Sat May 20, 2017 8:14 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Probe EGT in quiescence?
Replies: 28
Views: 5318

Re: Probe EGT in quiescence?

In my engine I probe syzygy also in qs, it's a little improvement at tc=5:00
by Fabio Gobbato
Wed May 10, 2017 8:51 am
Forum: Computer Chess Club: General Topics
Topic: Andscacs - New version 0.91
Replies: 20
Views: 5604

Re: Andscacs - New version 0.91

How do you use this big amount of data?
by Fabio Gobbato
Thu Dec 01, 2016 6:07 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Question to UCI engine authors
Replies: 8
Views: 2537

Re: Question to UCI engine authors

During search I handle only "isready", "ponderhit" and "stop". Handle the options would add more complexity to the engine. It's better for the engine to receive the other commands while it's not searching.
by Fabio Gobbato
Thu Nov 24, 2016 9:22 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Hashing a quadboard from scratch
Replies: 10
Views: 2934

Re: Hashing a quadboard from scratch

I think it's a good idea that can worth a try. In my engine I use the zobrist hashing that is not really expensive because with the key I have also to incrementaly update the material+pst scores. I use a struct that contains all like this: typedef struct { uint64_t Hash; int16_t ScoreMg; int16_...
by Fabio Gobbato
Mon Oct 31, 2016 7:20 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Evaluation doubt
Replies: 4
Views: 1700

Re: Evaluation doubt

Of course less weights are easier to tune, but even if they are well tuned they can't express all the knowledge of a more complex evaluation.
So the answer is not so easy.
by Fabio Gobbato
Sat Oct 29, 2016 5:04 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Evaluation doubt
Replies: 4
Views: 1700

Evaluation doubt

In the evaluation function is it better to have a few weights but well tuned or more weights not well tuned?
What does your experience say?
by Fabio Gobbato
Sun Oct 23, 2016 12:32 pm
Forum: Computer Chess Club: General Topics
Topic: Pedone 1.5
Replies: 2
Views: 901

Pedone 1.5

I have just released a new version of my engine. These are the changes: Bug fixes Default Drawscore is set to -5 MultiPV mode Improved history heuristic Halved the pawns hash table size (now it's 1/16 of the Hash size) Tuning Added bonus/malus for the distance of the kings from candidate passers Imp...