Search found 16793 matches

by bob
Fri Sep 27, 2019 12:37 am
Forum: Computer Chess Club: General Topics
Topic: Similarity Report 2019
Replies: 52
Views: 5021

Re: Similarity Report 2019

I treat complaints as confidential, and was not planning on changing this policy. People must not feel impaired by fear for petty harrassment in retaliation for flagging wrong-doing. By the nature of things it are the most aggressve and viscious members that violate rules, and have a tendency to bu...
by bob
Mon Sep 23, 2019 6:47 pm
Forum: Computer Chess Club: General Topics
Topic: Google "DeepMind" AI Chief Placed On Leave..
Replies: 20
Views: 3645

Re: Google "DeepMind" AI Chief Placed On Leave..

https://www.dailymail.co.uk/news/article-7384895/Googles-DeepMind-founder-placed-leave-controversy-projects.html "Over 500 Million Dollars in Losses" "Co-founder of Google's artificial intelligence lab DeepMind takes leave of absence amid 'controversy over projects he's overseen' and company losses...
by bob
Mon Sep 23, 2019 3:02 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Basic endgames
Replies: 33
Views: 3123

Re: Basic endgames

As a note, I just checked the position above. I ran with sd=4 (4 ply max depth) and no endgame tables at all. Crafty forced mate easily. If you don't limit the search to 4 plies it will find a mate in 7 instantly so it needs some help to make it rely just on the PSQ stuff I mentioned. Works well...
by bob
Sun Sep 22, 2019 11:07 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: macOS users, proceed with caution with Xcode v11
Replies: 5
Views: 879

Re: macOS users, proceed with caution with Xcode v11

I installed this yesterday. And at least for compiling crafty (using profile-guided optimizations as well) it worked flawlessly. This on a 2017-ish MacBook air.
by bob
Sun Sep 22, 2019 11:06 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Basic endgames
Replies: 33
Views: 3123

Re: Basic endgames

same as my other suggestion. PSQ for losing side hates the edge of the board. Winning side wants to get king close to losing king. The rook will automatically do the right thing to hem the king on the edge of the board and keep it there, thanks to the losing side's PSQ hating the edge. Those two sim...
by bob
Wed Sep 18, 2019 7:41 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Basic endgames
Replies: 33
Views: 3123

Re: Basic endgames

Pfft. It shouldn't get more complicated. Already took too much time. Only counts distance from corner and distance between kings. Maybe hash table needs to be rewritten for it does not take symmetry into account? O wait I see I introduced a bug. To be provided. [d] 4k3/8/8/R7/4K3/8/8/8 w - - Depth ...
by bob
Wed Sep 18, 2019 7:39 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Crafty 25.3 MSVS 2019
Replies: 32
Views: 3391

Re: Crafty 25.3 MSVS 2019

There is still a problem, however. Works fine for unix-based systems. Still working on the windows version. Think I have it fixed in the source I sent you today, will wait for Joshua to confirm..
by bob
Tue Sep 17, 2019 4:54 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Crafty 25.3 MSVS 2019
Replies: 32
Views: 3391

Re: Crafty 25.3 MSVS 2019

That's the big question. :) I'm not a windows user, and I am not doing these compiles. Can you give me any hints to pass on to Joshua as to what exactly is needed to indicate "this is a 64 bit application"???
by bob
Mon Sep 16, 2019 5:22 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Crafty 25.3 MSVS 2019
Replies: 32
Views: 3391

Re: Crafty 25.3 MSVS 2019

OK, we are still mucking around with this. Joshua is compiling using the latest MSVC stuff. Here's our problem (I don't have a windows box to try this on so am getting compile help.) We can access __popcnt() with no problems including intrin.h. but we can NOT access __popcnt64(). Apparently the comp...
by bob
Sun Sep 15, 2019 4:20 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Crafty 25.3 MSVS 2019
Replies: 32
Views: 3391

Re: Crafty 25.3 MSVS 2019

Mike:

Still working on this. Send me the email you are using and I will send the source code once I finish this cleanup...