Lozza website updated to 1.15

Discussion of anything and everything relating to chess playing software and machines.

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op12no2
Posts: 561
Joined: Tue Feb 04, 2014 12:25 pm
Location: Gower, Wales
Full name: Colin Jenkins

Re: Very nice !

Post by op12no2 »

Cool, thanks Graham.

This version is a bit experimental. It has pretty drastic futility pruning - 50cp*depth - but that seems to work out best over a large number of games - with some howlers thrown in for good measure. Ugly chess but until the eval fn is more mature it seems the best way to get results. Totally non-intuitive to me, though thinking about it, I can kindasortaish see why it works in a PVS context - essentially a hypothesis testing context.

Silvian, I added the UCI harness to Gary's GarboChessJS and I may have done it incorrectly. If you test it, I'd be interested to hear what you think. I saw some wild eval figures being reported as I recall but I don't know if that's me or not...
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Sylwy
Posts: 5289
Joined: Fri Apr 21, 2006 4:19 pm
Location: IAȘI - the historical capital of MOLDOVA
Full name: Silvian Rucsandescu

Re: Very nice !

Post by Sylwy »

op12no2 wrote:
Silvian, I added the UCI harness to Gary's GarboChessJS and I may have done it incorrectly. If you test it, I'd be interested to hear what you think. I saw some wild eval figures being reported as I recall but I don't know if that's me or not...
To be honest - the play of GarboChess was strangely at the first attempt: incorrect moves and a quick defeat. Something is not OK, for sure !

SilvianR :wink:
op12no2
Posts: 561
Joined: Tue Feb 04, 2014 12:25 pm
Location: Gower, Wales
Full name: Colin Jenkins

Re: Very nice !

Post by op12no2 »

Sylwy wrote:
To be honest - the play of GarboChess was strangely at the first attempt: incorrect moves and a quick defeat. Something is not OK, for sure !

SilvianR :wink:
Ah OK thanks. I've probably screwed up. Gary, if you see this, can you have a quick look at:-

http://op12no2.me/toys/lozza/garbo.js

The bit at the end where I invoke your primitives from my UCI stuff.