Search found 3172 matches

by lkaufman
Fri Mar 08, 2019 5:52 am
Forum: Computer Chess Club: General Topics
Topic: Draws with Knight odds are possible against a top GM?
Replies: 12
Views: 914

Re: Draws with Knight odds are possible against a top GM?

I think if you wanted to create a network for Lc0 that plays really well at Knight odds is to train it to play without the Knight. I think it will very quickly figure out the best chances in the position and play much stronger than if it was simply playing with a network trained on the normal start...
by lkaufman
Thu Mar 07, 2019 9:17 pm
Forum: Computer Chess Club: General Topics
Topic: multi PV mode
Replies: 8
Views: 379

Re: multi PV mode

Larry, anyone. Halving the cpu resources should cost the typical engine somewhere around 20(?) elo? Yet MPV =2 kills ~100 points. Why is the MPV performance hit so high? (A simple question with - I suspect - a complex answer! :roll: ) Well, 20 elo for a doubling might be close for 3 hour games on 4...
by lkaufman
Thu Mar 07, 2019 5:34 am
Forum: Computer Chess Club: General Topics
Topic: Draws with Knight odds are possible against a top GM?
Replies: 12
Views: 914

Re: Draws with Knight odds are possible against a top GM?

Very interesting as always Kai! Some comments: 1. I think Lc0 is better at giving handicaps than Stockfish or Komodo, provided that the network choice and handicap show a win prob. of 3% or more. Network 11248 is great at giving knight odds because it shows a win prob. of around 13%. Ridiculous, but...
by lkaufman
Thu Mar 07, 2019 5:08 am
Forum: Computer Chess Club: General Topics
Topic: multi PV mode
Replies: 8
Views: 379

Re: multi PV mode

For all normal engines, multiPV hurts the strength more than "slightly". Some tests I ran indicate that looking at just two moves costs normal Komodo about a hundred elo, and looking at four about another hundred elo. Stockfish may not lose quite as much, but still a huge amount. Lc0 and Komodo MCTS...
by lkaufman
Wed Mar 06, 2019 5:58 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Today is the day.
Replies: 4
Views: 464

Re: Today is the day.

the emergence is complete … block box wins over knowledge … I see it as unbiased knowledge wins over biased knowledge. I see it as 2000 cores wins over 16. But having said that, I must admit that I am happy to see Lc0 surpass Stockfish, because Lc0 does play more human style chess than Stockfish, a...
by lkaufman
Sun Feb 24, 2019 6:52 pm
Forum: Computer Chess Club: General Topics
Topic: Knight equals 48 pawns?
Replies: 47
Views: 4208

Re: Knight equals 48 pawns?

You were quite correct, except for the "little bit more robust" comment; the difference is day and night. With the 11248 network the win probs are all much closer to 50%, so knight odds gets 13% instead of 1%! Of course 13% for knight odds is ridiculous, but the result is that it plays quite well gi...
by lkaufman
Sun Feb 24, 2019 5:18 am
Forum: Computer Chess Club: General Topics
Topic: Knight equals 48 pawns?
Replies: 47
Views: 4208

Re: Knight equals 48 pawns?

By the way, I note that it is not feasible to play against Lc0 at knight odds, because it soon starts to blunder pieces almost randomly. At smaller handicaps like pawn f7 and move or two this doesn't happen, it plays very well. It's almost as if all win probabilities beyond 99% are the same. Does i...
by lkaufman
Sun Feb 24, 2019 2:56 am
Forum: Computer Chess Club: General Topics
Topic: Knight equals 48 pawns?
Replies: 47
Views: 4208

Re: Knight equals 48 pawns?

By the way, I note that it is not feasible to play against Lc0 at knight odds, because it soon starts to blunder pieces almost randomly. At smaller handicaps like pawn f7 and move or two this doesn't happen, it plays very well. It's almost as if all win probabilities beyond 99% are the same. Does i...
by lkaufman
Sat Feb 23, 2019 4:52 pm
Forum: Computer Chess Club: General Topics
Topic: Knight equals 48 pawns?
Replies: 47
Views: 4208

Re: Knight equals 48 pawns?

By the way, I note that it is not feasible to play against Lc0 at knight odds, because it soon starts to blunder pieces almost randomly. At smaller handicaps like pawn f7 and move or two this doesn't happen, it plays very well. It's almost as if all win probabilities beyond 99% are the same. Does i...
by lkaufman
Fri Feb 22, 2019 6:45 pm
Forum: Computer Chess Club: General Topics
Topic: Knight equals 48 pawns?
Replies: 47
Views: 4208

Re: Knight equals 48 pawns?

It seems to me that you are both making valid points in theory but not talking about the actual data. It is clear to me that the win perc. numbers reported by Lc0 in the opening are quite reasonable, both absolutely and relative to one another, up until the win prob. gets to about 99%, roughly knigh...