Dylan Sharp Vs. Harvey Williamson (G4)

Discussion of computer chess matches and engine tournaments.

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zullil
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by zullil » Wed Oct 30, 2019 4:12 pm

Ovyron wrote:
Wed Oct 30, 2019 12:44 pm
I want to thank Harvey for being a good sport. His move ordering and conditionals have been saving me a lot of time (for instance, all the analysis of 14...Re8 and 14...Rc8 that didn't need to be expanded after knowing he'll play 14...Qd7.)

1. g4 d5 2. g5 e5 3. d4 exd4 4. Nf3 c5 5. Bg2 Ne7 6. c3 dxc3 7. Nxc3 Nbc6 8. O-O d4 9. Ne4 Ng6 10. a3 Bg4 11. Bd2 Bd6 12. Rc1 O-O 13. Nxc5 Bxc5



My turn again.
OK, I've just entered Nxc5 Bxc5. Here's what my GUI shows after entering those moves. Of course, I've deleted the PV.

-1.64 (depth 69, 0:00:28)

So depth 69 takes less than 30 seconds, because Stockfish basically has the entire future game in hash---until some human surprises it. :wink:

Jouni
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by Jouni » Wed Oct 30, 2019 4:42 pm

I just repeated my original test: 30 SF self games after last move. After 1.g4 16/30 games were 0-1 and now from move from 14. it was 20/30. Not very convincing, so I think this will be draw. And indicate, that chess is draw even with suboptimal starting move! But thanks for very interesting game.
Jouni

Dann Corbit
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by Dann Corbit » Wed Oct 30, 2019 5:54 pm

zullil wrote:
Wed Oct 30, 2019 4:12 pm
OK, I've just entered Nxc5 Bxc5. Here's what my GUI shows after entering those moves. Of course, I've deleted the PV.

-1.64 (depth 69, 0:00:28)

So depth 69 takes less than 30 seconds, because Stockfish basically has the entire future game in hash---until some human surprises it. :wink:
I hope that you save your engine output so you can post it when the game is over.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

zullil
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by zullil » Wed Oct 30, 2019 6:20 pm

Dann Corbit wrote:
Wed Oct 30, 2019 5:54 pm
zullil wrote:
Wed Oct 30, 2019 4:12 pm
OK, I've just entered Nxc5 Bxc5. Here's what my GUI shows after entering those moves. Of course, I've deleted the PV.

-1.64 (depth 69, 0:00:28)

So depth 69 takes less than 30 seconds, because Stockfish basically has the entire future game in hash---until some human surprises it. :wink:
I hope that you save your engine output so you can post it when the game is over.
I'll try to save PVs when human moves deviate from Stockfish's choice. Really hasn't happened yet.

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Ovyron
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by Ovyron » Wed Oct 30, 2019 7:15 pm

Dann Corbit wrote:
Wed Oct 30, 2019 5:54 pm
I hope that you save your engine output so you can post it when the game is over.
All my teasing him has been about his refusal to save his output, we could be getting to know at what point the tail of the variation (where unsound moves start) begins, we could see from what move, and at what point Stockfish predicted the moves played in the game, we could see for how many moves in the PV it has predicted it, if they had changed it, if Stockfish missed the line and recovered at some point, why if it was looking at the same lines before Harvey's move it was showing a score of -1.60 and after it was -1.40.

All more interesting information than some random depth and score.

I've had enough, I'm going to make a proposal to Harvey.

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Ovyron
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by Ovyron » Wed Oct 30, 2019 8:29 pm

The game will continue by private message, we'll come back with the full PGN of the rest of the moves after the game ends.

Thanks everyone for watching.

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Graham Banks
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by Graham Banks » Wed Oct 30, 2019 9:13 pm

Ovyron wrote:
Wed Oct 30, 2019 8:29 pm
The game will continue by private message, we'll come back with the full PGN of the rest of the moves after the game ends.

Thanks everyone for watching.
That's disappointing.
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

zullil
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by zullil » Wed Oct 30, 2019 9:35 pm

Ovyron wrote:
Wed Oct 30, 2019 8:29 pm
The game will continue by private message, we'll come back with the full PGN of the rest of the moves after the game ends.

Thanks everyone for watching.


So this is the current position, since I don't believe White ever announced his 14th move.

Stockfish dev currently shows

-1.64 (depth 77, 1:47:03). The PV ends at Black's 63rd move. Apparently, it's been working on depth 78 for a while now.

I'll save the current PV, since it all likelihood, it will be the PGN for the game. :wink: :wink: Sadly, so far I've seen nothing at all original, but perhaps that's just the nature of the game arising from this opening.

I suppose I could just let Stockfish continue searching the current position. By the time we get the PGN, Stockfish will likely have solved chess, and also found one or two new Mersenne primes.

Or maybe I'll fire up Lc0 and see what it thinks of the position above. Can probably get 200M nodes before my RAM is filled.

Zenmastur
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by Zenmastur » Thu Oct 31, 2019 3:18 am

Graham Banks wrote:
Wed Oct 30, 2019 9:13 pm
Ovyron wrote:
Wed Oct 30, 2019 8:29 pm
The game will continue by private message, we'll come back with the full PGN of the rest of the moves after the game ends.

Thanks everyone for watching.
That's disappointing.
I agree!

Regards,

Zenmastur
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carldaman
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Re: Dylan Sharp Vs. Harvey Williamson (G4)

Post by carldaman » Thu Oct 31, 2019 5:05 am

It was only a matter of time before this contest imploded. :|
It seems like they always do.

(they = forum games)

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