St Louis Chess9LX September 11-13 2020
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Re: St Louis Chess9LX September 11-13 2020
"I'm slightly surprised no one appears to have let engines loose on the 960 initial positions with a view to discovering any instant wins. Perhaps they have and have kept the results of the analysis under wraps."
There are apparently some positions where white has a significant advantage. There also messy ones, where the Q is on "a" and a B on "h", where 1.g3 makes like difficult for black, who probably has to play a5 to get the Q out, of course black can just go 1....g6.
There are apparently some positions where white has a significant advantage. There also messy ones, where the Q is on "a" and a B on "h", where 1.g3 makes like difficult for black, who probably has to play a5 to get the Q out, of course black can just go 1....g6.
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Re: St Louis Chess9LX September 11-13 2020
This has been stated without proof for years, but nobody with the necessary backup can be bothered to check, or at least to publish their results. You would think AlphaZero could do it in a few hours.Kevin Thurlow wrote: ↑Wed Sep 16, 2020 9:10 amThere are apparently some positions where white has a significant advantage.
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Re: St Louis Chess9LX September 11-13 2020
"This has been stated without proof for years, but nobody with the necessary backup can be bothered to check, or at least to publish their results. You would think AlphaZero could do it in a few hours."
That's why I cautiously said, "apparently"! I haven't found any theory for 960, but there must be some...
That's why I cautiously said, "apparently"! I haven't found any theory for 960, but there must be some...
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Re: St Louis Chess9LX September 11-13 2020
Maybe when there are early resignations but using engines is cheating.
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Re: St Louis Chess9LX September 11-13 2020
Probably a bit more: a one minute evaluation per starting position would take more than 15 hours.NickFaulks wrote: ↑Wed Sep 16, 2020 7:29 pmThis has been stated without proof for years, but nobody with the necessary backup can be bothered to check, or at least to publish their results. You would think AlphaZero could do it in a few hours.Kevin Thurlow wrote: ↑Wed Sep 16, 2020 9:10 amThere are apparently some positions where white has a significant advantage.
A one hour per position would require 40 days of non stop crunching.
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Re: St Louis Chess9LX September 11-13 2020
Even the latter is probably "doable" by somebody somewhere you might have thought.....
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Re: St Louis Chess9LX September 11-13 2020
It’s been done - a couple of years ago - by the Sesse supercomputer
Article
Sesse analysis spreadsheet
Article
Sesse analysis spreadsheet
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Re: St Louis Chess9LX September 11-13 2020
Thanks, how had I never seen that? I have been bleating for some time that it really should exist!Matt Fletcher wrote: ↑Thu Sep 17, 2020 7:51 pmIt’s been done - a couple of years ago - by the Sesse supercomputer
Article
Sesse analysis spreadsheet
I find the spreadsheet more interesting than the chat. The next question is, for the top example, is a +.67 evaluation sufficient to remove this starting position from the 960? I leave this to serious players who understand these things far better than I do, but it is an important point if 960 is, as I hope, to become a serious option.
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Re: St Louis Chess9LX September 11-13 2020
It might be better expressed the way Alpha Zero did it as a winning percentage. In conventional chess, 0.67 is "White is (much) better".NickFaulks wrote: ↑Thu Sep 17, 2020 9:13 pmThe next question is, for the top example, is a +.67 evaluation sufficient to remove this starting position from the 960? I leave this to serious players who understand these things far better than I do, but it is an important point if 960 is, as I hope, to become a serious option.
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Re: St Louis Chess9LX September 11-13 2020
In the CC event, you play each opponent with both colours in the same starting position, so +0.67 in one game is -0.67 in the other. We are playing different starting positions against each opponent however.