Search found 353 matches

by xr_a_y
Wed Feb 20, 2019 6:09 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Singular extension ... again
Replies: 5
Views: 247

Re: Singular extension ... again

But I thought that singular extension aimed at looking if in the current situation there is only one good move (and then extend). If depth of the tt move is enough, and we trust it, I was thinking that at least ttscore-pawnValue was the bound to use (in a fail soft framework). Maybe all those very g...
by xr_a_y
Tue Feb 19, 2019 8:44 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Singular extension ... again
Replies: 5
Views: 247

Singular extension ... again

In Xiphos, one can read // singular extensions if (depth >= SE_DEPTH && !skip_move && _m_eq(move, hash_move) && !root_node && !_is_mate_score(hash_score) && hash_data.bound == HASH_LOWER_BOUND && hash_data.depth >= depth - 3) { beta_cut = hash_score - depth; score = pvs(sd, 0, 0, beta_cut - 1, beta_...
by xr_a_y
Tue Feb 19, 2019 6:33 am
Forum: Computer Chess Club: General Topics
Topic: A complete 2000 lines of code engine
Replies: 85
Views: 7998

Re: A complete 2000 lines of code engine

0.37 was a +35 versus 0.34
but the 0.40 is +70 versus 0.37 thanks to pruning even in end-game :o
Should be near 2570 now
by xr_a_y
Mon Feb 18, 2019 6:17 pm
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2019
Replies: 22
Views: 2582

Re: New engine releases 2019

Minic 0.39 https://github.com/tryingsomestuff/Minic/releases (bug fix, please do not use 0.38)
by xr_a_y
Sun Feb 17, 2019 2:31 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: CEO. Edition II.
Replies: 19
Views: 778

Re: CEO. Edition II.

Hi Sergio,

Minic 0.38 can be used (just released).

Thanks
by xr_a_y
Sun Feb 17, 2019 2:30 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Current fields for my 73rd Amateur Series (could change)
Replies: 9
Views: 488

Re: Current fields for my 73rd Amateur Series (could change)

Hi,

if not too late, Minic 0.38 can be used instead of 0.34.
by xr_a_y
Sat Feb 16, 2019 8:10 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Strange draw scores when searching Fine#70
Replies: 40
Views: 1097

Re: Strange draw scores when searching Fine#70

If you are right, I guess some better engine would benefit from not storing alpha_bound also ?
by xr_a_y
Sat Feb 16, 2019 4:36 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Strange draw scores when searching Fine#70
Replies: 40
Views: 1097

Re: Strange draw scores when searching Fine#70

On the same subject, I notice Minic is weaker if I put alpha_bound in TT. So I only insert exact and beta_bound inside TT.
Don't really know why ... :oops:
by xr_a_y
Sat Feb 16, 2019 11:56 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Strange draw scores when searching Fine#70
Replies: 40
Views: 1097

Re: Strange draw scores when searching Fine#70

Ok how do you "detect" draw score (==contemp ?)