Search found 435 matches

by chrisw
Sat Apr 20, 2019 4:05 pm
Forum: Computer Chess Club: General Topics
Topic: Dual RTX 2060 for Leela
Replies: 47
Views: 1274

Re: Dual RTX 2060 for Leela

What is a node in lc0? This is not a stupid question, btw. Could be every node in the tree. Could be every node in the tree plus every node outside the tree. If it’s a tree node, does it count 1 for every time the search goes through, or just the once when it is visited the first time? Could be the...
by chrisw
Fri Apr 19, 2019 11:32 pm
Forum: Computer Chess Club: General Topics
Topic: Dual RTX 2060 for Leela
Replies: 47
Views: 1274

Re: Dual RTX 2060 for Leela

I installed two RTX 2060 (Gigabyte Windforce OC) into my Ryzen7 1800x 8x4000 MHz PC and I made some tests. I used Leela version 0.21.1 for tests. 1. test: Net 11250 1a. test: Default parameters GPU1 setoption name backend value cudnn-fp16 go nodes 1000000 Result: max nps = 22533 (depth 10 time 1540...
by chrisw
Wed Apr 17, 2019 12:06 pm
Forum: Computer Chess Club: General Topics
Topic: The problem with adjudication based on score
Replies: 26
Views: 1394

Re: The problem with adjudication based on score

1.hxg7, Rg8; 2.Kb1, Rc7; 3.Kc1, R8xg7; 4. Kd1, Rh7; 5.Rg1, Rh2; 6.Ke2, Rgh7; 7.Kf1, Rh1; 8.Rxh1, Rxh1+; 9.Ke2, Rh2; 10.Kf1, Kf6 seems to win? nope. after 4 Rh7, white exchanges rooks and the impenetrable by stalemate fortress is on, as in the main line Yes - I realised this too late and couldn't ed...
by chrisw
Wed Apr 17, 2019 10:14 am
Forum: Computer Chess Club: General Topics
Topic: The problem with adjudication based on score
Replies: 26
Views: 1394

Re: The problem with adjudication based on score

Graham Banks wrote:
Wed Apr 17, 2019 6:26 am
1.hxg7, Rg8; 2.Kb1, Rc7; 3.Kc1, R8xg7; 4. Kd1, Rh7; 5.Rg1, Rh2; 6.Ke2, Rgh7; 7.Kf1, Rh1; 8.Rxh1, Rxh1+; 9.Ke2, Rh2; 10.Kf1, Kf6 seems to win?
nope. after 4 Rh7, white exchanges rooks and the impenetrable by stalemate fortress is on, as in the main line
by chrisw
Wed Apr 17, 2019 10:10 am
Forum: Computer Chess Club: General Topics
Topic: The problem with adjudication based on score
Replies: 26
Views: 1394

Re: The problem with adjudication based on score

Try this one in your favorite chess engine and you will see the problem immediately (unless some engine scores it zero): 7r/6p1/7P/p1r1p1k1/Pp1pPp2/1PpP1Pp1/2P3P1/K6R w - - I did not send this to an engine, but am wondering what the problem is. White is dead lost, no? 1.hxg7 Rxh1+ 2.Ka2 Ra1+ 3.Kxa1...
by chrisw
Sun Apr 07, 2019 9:36 am
Forum: Computer Chess Club: General Topics
Topic: stockfish 10 vs. Mephisto III S Glasgow
Replies: 40
Views: 2055

Re: stockfish 10 vs. Mephisto III S Glasgow

As I said before, you maybe don’t get it, so I repeat: Why stockfish needs millions or hundred thousands of NPS ? Why ? Because it has no clue about chess. not true. the evaluation function of SF knows a good deal about chess. The development paradigm is all about crowd sourced input of ideas and c...
by chrisw
Sat Apr 06, 2019 10:19 pm
Forum: Computer Chess Club: General Topics
Topic: The Last Survivor of AB engine, Stockfish! What position will Stockfish stand?
Replies: 44
Views: 2730

Re: The Last Survivor of AB engine, Stockfish! What position will Stockfish stand?

All I see is Leela times 3. It's kinda sketchy that 3 basically the same engines are allowed like that. If you add Brainfish, ASMfish, Thothfish with exchanging turned up and Sugar then the top 4 would probably be populated by AB engines again, but really it's just Stockfish with a different flavou...
by chrisw
Thu Apr 04, 2019 2:17 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 8478

Re: Lc0 51010

We only want to differentiate between artificial stupidity (e.g.stockfish) and natural intelligence (human) and NN. Stockfish has been crafted with a great deal of human brain power, and the elements within it are pretty smart. It makes no sense to call it artificial stupidity. My wish would be tha...
by chrisw
Thu Apr 04, 2019 9:00 am
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 8478

Re: Lc0 51010

I do not agree and I consider memorizing patterns of search as doing a search. Communication requires a shared terminology: https://www.chessprogramming.org/Evaluation https://www.chessprogramming.org/Search#Search_Algorithms How can you know that Nf7+ is bad without having in mind Nf7+ Qxf7 Qxf7 R...
by chrisw
Wed Apr 03, 2019 4:25 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 51010
Replies: 115
Views: 8478

Re: Lc0 51010

Seems like I spoke too quickly and 0 node Leela is already quite strong at Blitz. 0 node is certainly a lie. You cannot play with 0 nodes. I also do not buy the 1 node. Chess players including humans always see more than a single move in part of the moves of a game(even at the fastest time control)...