Search found 708 matches

by jp
Mon Sep 23, 2019 8:29 am
Forum: Computer Chess Club: General Topics
Topic: Google "DeepMind" AI Chief Placed On Leave..
Replies: 18
Views: 2404

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

TechCrunch: Google completes controversial takeover of DeepMind Health The hand-off of DeepMind Health to Google, which was announced just over a year ago, means the tech giant is now directly providing software services to a number of NHS trusts that had signed contracts with DeepMind for Streams; ...
by jp
Sun Sep 22, 2019 1:11 pm
Forum: Computer Chess Club: General Topics
Topic: Out of the Kai 450 positions, 99 not found by SF
Replies: 105
Views: 10174

Re: Out of the Kai 450 positions, 99 not found by SF

zullil wrote:
Sun Sep 22, 2019 12:24 pm
6-man Syzygy tables.
I see. The final position in the PV has 6 men, so maybe that's why the line stopped there. It's a TB draw.
Maybe other lines with the same first move led to 6-man TB losses, which led to the small negative eval Lc0 attaches to the PV.
by jp
Sun Sep 22, 2019 11:55 am
Forum: Computer Chess Club: General Topics
Topic: Out of the Kai 450 positions, 99 not found by SF
Replies: 105
Views: 10174

Re: Out of the Kai 450 positions, 99 not found by SF

jp wrote:
Sat Sep 21, 2019 12:08 pm
After Lc0's 72... Rxa7, the position is
8/r2k4/3P4/4PK2/1P3P2/8/8/8 w - - 0 1
which is a tablebase draw.
Afterwards, I saw tbhits 2177196. Obviously not 7-man then. :wink:
Was it 5-man TBs?
by jp
Sat Sep 21, 2019 12:08 pm
Forum: Computer Chess Club: General Topics
Topic: Out of the Kai 450 positions, 99 not found by SF
Replies: 105
Views: 10174

Re: Out of the Kai 450 positions, 99 not found by SF

5rk1/NpR5/3p1q1b/3Pp2p/4Pn2/5P1b/PPQ2B1P/4N2K w - - 9 29 Lc0 (network 320x24.J13-swa-410000) with 100M nodes gives: info depth 59 seldepth 111 time 4278801 nodes 100000007 score cp -56 hashfull 218 nps 23234 tbhits 2177196 multipv 1 pv a7c8 f8e8 c8b6 g8h8 f2g3 e8g8 c2f2 f4g6 b6c4 h5h4 c7b7 h4g3 h2g...
by jp
Fri Sep 20, 2019 10:34 am
Forum: Computer Chess Club: General Topics
Topic: New engine: Mora
Replies: 17
Views: 1117

Re: New engine: Mora

MikeB wrote:
Thu Sep 19, 2019 6:41 pm
The variety above weakens Honey tremendously but obviously suitable for human play.
But if we want variety but still close to full strength, will setting Variety to 10 and J&H to 1 do it?
by jp
Fri Sep 20, 2019 10:28 am
Forum: Computer Chess Club: General Topics
Topic: New engine: Mora
Replies: 17
Views: 1117

Re: New engine: Mora

I just want to be clear that I was not trying to achieve non determinism, it was an unexpected consequence of my implementation. But if you want non determinism without opening books there should probably be a better way to do it (not that I know how). Yes, I understood (but it can be useful if it ...
by jp
Thu Sep 19, 2019 4:45 am
Forum: Computer Chess Club: General Topics
Topic: New engine: Mora
Replies: 17
Views: 1117

Re: New engine: Mora

Do you know your searches are non-deterministic with one core/thread ( at least for me) . I think I know why. It's because the set of Zobrist keys used for hashing are generated at random when the engine starts. For 2 different executions of the program, the entries in the tranposition table are go...
by jp
Mon Sep 16, 2019 1:30 pm
Forum: Computer Chess Club: General Topics
Topic: What kind of game is chess?
Replies: 12
Views: 480

Re: What kind of game is chess?

For example an AB engine sees checkmate in 4 moves, but LCZero makes another 50 moves and gives checkmate in endgame like KRK, KQK, KBBK, KBNK etc. The same thing with forced wins. Many people still don't understand that this is a feature of the MCTS. It doesn’t matter to MCTS how quickly you wins,...
by jp
Mon Sep 16, 2019 4:10 am
Forum: Computer Chess Club: General Topics
Topic: The Busted Dutch
Replies: 89
Views: 2587

Re: The Busted Dutch

Graham Banks wrote:
Sun Sep 15, 2019 1:02 am
I found the following comments on 2.d5
Comments from whom?
by jp
Sun Sep 15, 2019 3:14 am
Forum: Computer Chess Club: General Topics
Topic: Leela Output
Replies: 11
Views: 690

Re: Leela Output

phhnguyen wrote:
Sun Sep 15, 2019 3:08 am
Allow me to add an extra question (perhaps it is answered somewhere but I cannot find out).
It's answered here (look at page 2):

viewtopic.php?f=2&t=71686