Search found 9866 matches

by Dann Corbit
Thu Oct 29, 2020 12:44 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Myopic, a new Creative Commons chess program
Replies: 21
Views: 4537

Re: Myopic, a new Creative Commons chess program

The mac link for Myopic includes the source code.
by Dann Corbit
Tue Oct 27, 2020 5:23 pm
Forum: Computer Chess Club: General Topics
Topic: What in the world can that be?!
Replies: 15
Views: 697

Re: What in the world can that be?!

rnbqkb1r/pp2p1pp/2pp1n2/5p2/2PP4/6P1/PP2PPBP/RNBQK1NR w KQkq - In my database, this position has the very unusual designation of "HD 4" in the Opening field. I guess it is a mistake, but I was wondering if there is a name for the opening terminating in this position. It gets played a lot, I have mo...
by Dann Corbit
Mon Oct 26, 2020 11:42 pm
Forum: Computer Chess Club: General Topics
Topic: What in the world can that be?!
Replies: 15
Views: 697

Re: What in the world can that be?!

Your file also shows the draw rarity leaning:

Code: Select all

White Wins   :     33 (42.3 %)
Black Wins   :     27 (34.6 %)
Draws        :     18 (23.1 %)
by Dann Corbit
Mon Oct 26, 2020 11:31 pm
Forum: Computer Chess Club: General Topics
Topic: What in the world can that be?!
Replies: 15
Views: 697

Re: What in the world can that be?!

That position popped up on a query meant to expose positions which have a small proportion of draws.
The number of wins and losses far outnumbers the draw count, which is very interesting.
by Dann Corbit
Mon Oct 26, 2020 5:27 pm
Forum: Computer Chess Club: General Topics
Topic: What in the world can that be?!
Replies: 15
Views: 697

What in the world can that be?!

rnbqkb1r/pp2p1pp/2pp1n2/5p2/2PP4/6P1/PP2PPBP/RNBQK1NR w KQkq - In my database, this position has the very unusual designation of "HD 4" in the Opening field. I guess it is a mistake, but I was wondering if there is a name for the opening terminating in this position. It gets played a lot, I have mo...
by Dann Corbit
Sat Oct 24, 2020 2:16 pm
Forum: Computer Chess Club: General Topics
Topic: interesting position
Replies: 7
Views: 381

Re: interesting position

Do you use null move verification? I guess that zugzwang might play a role here. Another thing that might help is to scale pruning a bit using mobility. I use an s curve to decrease pruning when move choices are very limited and to increase pruning when there are a huge number of possible moves. I f...
by Dann Corbit
Sun Oct 18, 2020 2:41 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: SPCC: Testrun of Lc0 J92-260 finished
Replies: 9
Views: 627

Re: SPCC: Testrun of Lc0 J92-260 finished

That is quite a leap, +34b Elo better than the previous top score
by Dann Corbit
Sun Oct 18, 2020 2:38 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: BONA_PIECE_ZERO
Replies: 18
Views: 2238

Re: BONA_PIECE_ZERO

I'm not sure why groups like TCEC are okay with calling Stockfish's implementation a "library" for "everyone to use". Do your own work, and it will pay dividends down the line. You also skip all the trash thats in Stockfish because its a weak Shogi port that was never cleaned up. I guess that they ...
by Dann Corbit
Sat Oct 17, 2020 4:36 pm
Forum: Computer Chess Club: General Topics
Topic: Official Release of OliThink 5.7.5 including a Java-GUI
Replies: 55
Views: 7191

Re: Official Release of OliThink 5.7.5 including a Java-GUI

Beyond Glaurung strength is mind boggling. I am really stunned at the progress of Olithink. I think you are teaching everyone a powerful lesson about simplicity (and even beauty). I guess that one of the things the NN engines add that is not properly performed in most chess engines is the focus on m...
by Dann Corbit
Fri Oct 16, 2020 11:00 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: EGTB compression
Replies: 2
Views: 576

Re: EGTB compression

I see. Yes, I meant LZ4. With the HC version using -9, it gets very good compression ratio. Now, it compresses slowly using those settings but it decompresses ultra-fast. That is why I thought it would be a good compression algorithm for tablebase files. Even though compression is slow, you only hav...