Search found 1303 matches

by BertTuyt
Thu Sep 28, 2017 20:19
Forum: Draughts, Computer, Internet
Topic: Internet engine matches
Replies: 395
Views: 130306

Re: Internet engine matches

To all involved,
it is and was my intention to share much in this forum.
And openly discuss all I'm working on, and also provide lots of source code.
As apparently I'm a liar, I conclude that my contribution is not valued, and I considered this my last post in this forum.
Good luck to all.

Bert
by BertTuyt
Tue Sep 26, 2017 21:55
Forum: Draughts, Computer, Internet
Topic: Internet engine matches
Replies: 395
Views: 130306

Re: Internet engine matches

which is??

Bert
by BertTuyt
Tue Sep 26, 2017 19:29
Forum: Draughts, Computer, Internet
Topic: Internet engine matches
Replies: 395
Views: 130306

Re: Internet engine matches

First of all thanks for organizing the matches. I also tend to agree with Gerard, this is close at 100% draw level. And not yet under normal tournament conditions, or hyper Hardware. Think in this case the ELO differences was 4 points. But the questions remains, are we close to the draw black hole, ...
by BertTuyt
Mon Sep 25, 2017 20:50
Forum: Draughts, Computer, Internet
Topic: dragon 4.5
Replies: 51
Views: 20029

Re: dragon 4.5

Michel, which processor are you thinking about to buy in the (near) future.
Also DB Generation scales quite good with the number of cores.

Bert
by BertTuyt
Mon Sep 25, 2017 13:27
Forum: Draughts, Computer, Internet
Topic: dragon 4.5
Replies: 51
Views: 20029

Re: dragon 4.5

Based upon these results Dragon 4.6.1 vs scan 3.0: +1 -38 =547 (46.8%, -15 elo), my ELO calculation yields 22? So not sure if I have done something wrong. Also interesting to see that these results are based upon a 1 min/game, whereas tournaments (like Olympics) are based upon 20 min/game. Last but ...
by BertTuyt
Sun Sep 24, 2017 21:23
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

Gerard, do you have already an insight for all initial while losing moves (for example 23-19), how many moves on black side are winning.
For 23-19 at least the 12-16 move (which immediately loses 1 man), seems to me already losing for black.

Bert
by BertTuyt
Sun Sep 24, 2017 21:20
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

Hope that Fabien would be able to provide a Scan 8x8 BT with a evaluation based upon ML. If the Scan 8x8 BT Database is limited (example 6P), we could really learn what the error rate is for the search (as a function of ply). If Scan 8x8 BT would play white, every lost game would at least contain 1 ...
by BertTuyt
Sun Sep 24, 2017 19:43
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

Gerard, herewith some data. In below table I have listed at which ply which move was proved. Keep in mind that due to different ply definitions, extensions or pruning, not all plies are equal, among programs. Maybe it also gives a clue about the complexity of the path. Ply Move Score ---------------...
by BertTuyt
Sun Sep 24, 2017 11:51
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

It took some time, but also on my side the result is now confirmed that 22-18 remains a win, and all other initial moves are a loss.
I will take now a short break, before restarting.

Bert
by BertTuyt
Fri Sep 22, 2017 18:56
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

Did some-one already try the Scan BT version? Interesting what a 1000 (or other large number) game match self play (example both programs on 10 Ply, or whatever) would learn. As we all tend to believe that it is a white win, every black win would than contain at least one error. In the meantime also...
by BertTuyt
Thu Sep 21, 2017 19:05
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

Gerard/Rein, thanks for your reactions. I meant that from a visual point of view, it is for me not clear why there is only 1 winning move 22-18. I can imagine that moving to the edges is not as optimal. But (not looking to the statistics) why all other moves fail, is a riddle. And how to include the...
by BertTuyt
Wed Sep 20, 2017 17:07
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

Rebooting of the system is not very helpful when you are doing calculations for days :) Anyway, after some interrupts, now 4 moves proved as a loss. 23-18, 21-17, 24-20, 23-19 So with the already proved 22-18, 2 moves to go. And on my other computer I already proved 22-17 as a loss. So 1 move down o...
by BertTuyt
Fri Sep 15, 2017 18:49
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

It was my purpose to strongly solve this (so not ultra strong), which in my case translates that in every position I would get the final result within 10 seconds (or alike). Which is not yet the case as due to less memory and a HD instead of a SSD , the search seems to be IO bound. After quite some ...
by BertTuyt
Thu Sep 14, 2017 21:19
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

Gerard, I think we could call it weakly solved (but think Rein has the final verdict). So far no other moves other than 23-19 which have a final score. I will also go towards 15P and 16P, but not immediately to 10x10 BT. I want to do some other tests first. If the 2018 Computer Olympics is again in ...
by BertTuyt
Wed Sep 13, 2017 21:05
Forum: Draughts, Computer, Internet
Topic: Breakthrough Draughts
Replies: 203
Views: 45667

Re: Breakthrough Draughts

Started a all-move analysis search (1 core only :D ).
Will run this for some time (on my slow computer) to see what happens.
So far all 0, only 23-19 a loss.

Bert