Search found 808 matches

by Ed Gilbert
Thu Jan 21, 2021 14:00
Forum: Draughts, Computer, Internet
Topic: Draughts equivalent of Sygyzy tablebases?
Replies: 6
Views: 121

Re: Draughts equivalent of Sygyzy tablebases?

I do not know, is it interesting here, but Alexander Svirin (Aurora Borealis program) has placed all his databases up to 8 pieces on cloud. There Russian, Russian Give Away, Brazilian, Czech, English, International Killer, International, International Give Away, Italian, Pool, Spanish, Spantsireti ...
by Ed Gilbert
Mon Jan 18, 2021 18:45
Forum: Draughts, Computer, Internet
Topic: NNUE
Replies: 90
Views: 3777

Re: NNUE

Ed, thanks for your test, now we have an accurate baseline to start from.. Think this is already an encouraging result, as we are only at the beginning of nnue. With this elo, i assume the nnue version would already beat many other programs. What's your 5 cents? Bert The W-3245 CPU is 3.2 GHz, 16 c...
by Ed Gilbert
Mon Jan 18, 2021 17:45
Forum: Draughts, Computer, Internet
Topic: NNUE
Replies: 90
Views: 3777

Re: NNUE

Match results, Scan_31nnue vs Scan_31, played on a Xeon W-3245, 2-move start positions, TC 75 moves in 1 minute, books off, 6-piece dbs, 1 search thread. [ 1]: 0.465 score, 632 games, 0 wins, 44 losses, 587 draws, 1 unk [ 2]: 0.467 score, 632 games, 1 wins, 42 losses, 586 draws, 3 unk [ 3]: 0.463 sc...
by Ed Gilbert
Mon Jan 18, 2021 14:24
Forum: Draughts, Computer, Internet
Topic: Kingsrow - databases
Replies: 18
Views: 354

Re: Kingsrow - databases

I built 2 through 8 pieces in 2008 - 2009. It took 5.6 core-years to build and verify. See http://edgilbert.org/InternationalDraughts/8_piece_international_draughts_db.htm The number of positions for 9 pieces is about 11.5 times as many as 2 through 8 pieces. So if you were to build 9 pieces on 2008...
by Ed Gilbert
Mon Jan 18, 2021 13:28
Forum: Draughts, Computer, Internet
Topic: Kingsrow - databases
Replies: 18
Views: 354

Re: Kingsrow - databases

Thanks Ed. And you can describe very precisely how to generate the database 9 pieces. Here a question comes to my mind - after generating the 9 pieces database, you will have to change the program code to handle this database.How do you think Ed how long would it kidnapped. I have no plans to build...
by Ed Gilbert
Mon Jan 18, 2021 01:40
Forum: Draughts, Computer, Internet
Topic: Kingsrow - databases
Replies: 18
Views: 354

Re: Kingsrow - databases

If I assume only 5x4 and 5x5 configurations (no 6x3 or 6x4), and assume that the size for 9 pieces will be the 7-piece size times the ratio of 9-piece positions to 7-piece positions (so assuming the same compression ratio for 9 pieces as was achieved for 7 pieces), then the size for 9 pieces would b...
by Ed Gilbert
Fri Jan 15, 2021 12:51
Forum: Draughts, Computer, Internet
Topic: NNUE
Replies: 90
Views: 3777

Re: NNUE

Joost, very interesting, thanks for posting this update. Your results with floating point and non-incremental eval are already very good. It wasn't clear to me, are your training positions labeled as WLD, or with an eval score from a quick search? Also, what time controls did you use for the matches...
by Ed Gilbert
Fri Jan 15, 2021 12:18
Forum: Draughts, Computer, Internet
Topic: Draughts equivalent of Sygyzy tablebases?
Replies: 6
Views: 121

Re: Draughts equivalent of Sygyzy tablebases?

The Kingsrow databases are available without restrictions. These include win, loss, draw for 8 pieces max, distance to win for 7 pieces max, and distance to conversion for 8 pieces max. Access source code for Windows and Linux is on GitHub: https://github.com/eygilbert/egdb_intl
by Ed Gilbert
Mon Jan 04, 2021 20:23
Forum: Draughts, Computer, Internet
Topic: Flits 3.1
Replies: 4
Views: 191

Re: Flits 3.1

He has a question about the program Flits 3.1. Some time ago, Ed and Bert noticed a bug in Flits. It concerned the base of endings in the program. Can someone write how to check whether the error still occurs or not. Thank you in advance for any information. I have been told by someone who knows th...
by Ed Gilbert
Wed Dec 30, 2020 13:25
Forum: Draughts, Computer, Internet
Topic: Left/right imbalance checkers/draughts
Replies: 2
Views: 165

Re: Left/right imbalance checkers/draughts

How does one (typically) implement left/right imbalance ? What first comes to my mind is simply counting the pieces on the left and right side of the board but that seems to be a little too "unprecise". edit: I tried to give a simple explanation, but I got it wrong. For the white men on the left si...
by Ed Gilbert
Thu Nov 26, 2020 13:10
Forum: Draughts, Computer, Internet
Topic: Moby Dam
Replies: 67
Views: 37605

Re: Moby Dam

I set the program to 15 minutes for 75 moves and after 75 moves it doesn't play anymore. You told it that the game would end after 75 moves, so the program behavior after that is not defined by your match rules. The state of the program and how it thinks and moves at that point is left to the discr...
by Ed Gilbert
Sun Nov 01, 2020 18:31
Forum: Draughts, Computer, Internet
Topic: Online Computer Olympiad 2020
Replies: 5
Views: 929

Re: Online Computer Olympiad 2020

Ed whether this Olympics happened or not.
It is not scheduled to start until the end of November.
23 november : last day registration
by Ed Gilbert
Sat Oct 31, 2020 14:05
Forum: Draughts, Computer, Internet
Topic: Online Computer Olympiad 2020
Replies: 5
Views: 929

Re: Online Computer Olympiad 2020

The Olympiad announcement might give the impression that you have to programmatically interface your engine to the Ludii system, but that is not necessary. You only need to run the Ludii GUI and use it to login to the Ludii game server. After you create a game on the server and your opponent joins t...
by Ed Gilbert
Mon Oct 26, 2020 17:03
Forum: Draughts, Computer, Internet
Topic: Rapid or blitz
Replies: 3
Views: 345

Re: Rapid or blitz

I now see that the FMJD does have definitions for these terms, and game time 15 min per player is included in both categories. http://www.fmjd.org/?p=annex. I think you can use either one.
by Ed Gilbert
Mon Oct 26, 2020 14:23
Forum: Draughts, Computer, Internet
Topic: Rapid or blitz
Replies: 3
Views: 345

Re: Rapid or blitz

https://en.wikipedia.org/wiki/Fast_chess. In chess, 15 minutes per player is rapid. I'm not aware of any different definitions for draughts.