Search found 663 matches

by xr_a_y
Fri Aug 23, 2019 3:45 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PVS, window, and mate
Replies: 20
Views: 757

Re: PVS, window, and mate

hgm wrote:
Fri Aug 23, 2019 1:46 pm
It should not be possible to prune or reduce moves when the alternative is being checkmated.
This is also my feeling. But this requiere that even not being currently in check, if alpha and/or beta bound is a mating/ed score then hard pruning shall be switch off.
by xr_a_y
Fri Aug 23, 2019 8:39 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PVS, window, and mate
Replies: 20
Views: 757

Re: PVS, window, and mate

Interresting point. For now i use 2 slots per bucket. One being always replace, the other replace by depth. You are suggesting a pv only slot. I ll try that asap.
by xr_a_y
Thu Aug 22, 2019 5:11 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Sending pure comments using UCI protocol
Replies: 9
Views: 378

Re: Sending pure comments using UCI protocol

Ok. So this is not so clear in fact...

Maybe a

info comments ....

sequence could be helpful in the protocol ?
by xr_a_y
Thu Aug 22, 2019 5:07 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: 75th Amateur Series Division 6
Replies: 13
Views: 826

Re: 75th Amateur Series Division 6

Graham Banks wrote:
Wed Aug 21, 2019 9:52 pm
Congratulations to Krasimir (Bagatur author) on a convincing tournament victory. :)

Bagatur 1.8 seems to be a nice improvement over the previous version.
Thanks for the tourney. Indeed a great step forward for bagatur !
by xr_a_y
Thu Aug 22, 2019 5:05 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PVS, window, and mate
Replies: 20
Views: 757

Re: PVS, window, and mate

Ok for lmr, but what about SEE of supposed bad cap?
by xr_a_y
Wed Aug 21, 2019 6:10 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PVS, window, and mate
Replies: 20
Views: 757

Re: PVS, window, and mate

What if White to play. First move of the supposed deep mate sequence for White is a quiet move (for instance a pawn push to reduce King mobility). Best answer for black is in fact a shorter mate or a dramatic material gain that White is not viewing because it starts by a queen sac. It feels to me th...
by xr_a_y
Wed Aug 21, 2019 9:54 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Sending pure comments using UCI protocol
Replies: 9
Views: 378

Sending pure comments using UCI protocol

To send things that won't be read by the GUI in xboard protocol, the # sign is used at the beginning of the line. (not read is a bit false as some key word are still parsed by some GUI, like the word "error" for example in winboard itself, anyway). What is the syntax in UCI protocol ? It seems to me...
by xr_a_y
Tue Aug 20, 2019 10:06 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PVS, window, and mate
Replies: 20
Views: 757

Re: PVS, window, and mate

I think I already started a similar discussion some months ago ... anyway I'm struggling to fix something inside Minic. Here's the thing : when doing a window search you gradually increase alpha and/or beta until the return score fits in the given interval. When an engine discover a deep mate, let'...
by xr_a_y
Tue Aug 20, 2019 7:21 pm
Forum: Computer Chess Club: General Topics
Topic: MateFinder 9
Replies: 47
Views: 9127

Re: MateFinder 9

great. thanks !