New engine releases 2020

[Jamal Bubker]

Thanks very much Terje !! Congrats for this tremendous improvment !!

[Gabor Szots]

Thanks all

I hope so too @Gabor

After about 100 games against 2900 engines the score stands at 36 %, which shows that the improvement is closer to 150 than 250.

[Terje]

Thanks all

I hope so too @Gabor

After about 100 games against 2900 engines the score stands at 36 %, which shows that the improvement is closer to 150 than 250.

That wouldn't be entirely unexpected, self-play elo is usually inflated. I had my hopes up after xr_a_y's test, as well as a (short) local test vs Glaurung 2.2 (2800 ccrl) which showed Weiss as 100 elo higher, though.

What time control btw?

[xr_a_y]

Thanks all

I hope so too @Gabor

After about 100 games against 2900 engines the score stands at 36 %, which shows that the improvement is closer to 150 than 250.

That wouldn't be entirely unexpected, self-play elo is usually inflated. I had my hopes up after xr_a_y's test, as well as a (short) local test vs Glaurung 2.2 (2800 ccrl) which showed Weiss as 100 elo higher, though.

What time control btw?

Mine was 20+0.2 on an i7-9700K

[Gabor Szots]

What time control btw?

I test at 2 minutes + 1 second.

[Terje]

Mine was 20+0.2 on an i7-9700K

I test at 2 minutes + 1 second.

Ah ok, the time management change had a much bigger impact on 10+0.1 than 60+0.6, and Weiss is probably stronger at (very) short TCs in general due to speed mattering more.

Out of curiousity, what types of adjudication did both of you use? I suspect Weiss might still mess up in end games that reach TB positions if there isn't adjudication. Though hopefully it doesn't run out of time anymore. (Please report if it does lose on time or shows any other unwanted behavior )

[xr_a_y]

Mine was 20+0.2 on an i7-9700K

I test at 2 minutes + 1 second.

Ah ok, the time management change had a much bigger impact on 10+0.1 than 60+0.6, and Weiss is probably stronger at (very) short TCs in general due to speed mattering more.

Out of curiousity, what types of adjudication did both of you use? I suspect Weiss might still mess up in end games that reach TB positions if there isn't adjudication. Though hopefully it doesn't run out of time anymore. (Please report if it does lose on time or shows any other unwanted behavior )

I always use no adjudication to watch end-games.

[Gabor Szots]

Out of curiousity, what types of adjudication did both of you use? I suspect Weiss might still mess up in end games that reach TB positions if there isn't adjudication. Though hopefully it doesn't run out of time anymore. (Please report if it does lose on time or shows any other unwanted behavior )

I use three types of adjudication under Arena:
1. A 4-piece TB draw (so that e.g. KRKR endgames won't play out till the 50-moves rule takes effect. Not in force for weakish engines.
2. Games reaching 230 moves are adjudicated as a draw.
3. Resign threshold. For better engines I set this to 700 cp's, for weaker ones to 900.

For very weak engines I switch off all adjudications.

So for Weiss, 1-2-3 are all in effect.

I also use adjudications under Fritz and Shredder. I don't know the exact workings of those but I choose the most rigid ones (so that that game lasts longer), such as 'late' adjudication for Fritz.

[RubiChess]

Hi.

I received reports about Rubi 1.7.1 crashing sometimes and could watch it live crashing at the TCEC cup tournament yesterday so I released a fixed version here: https://github.com/Matthies/RubiChess/r ... /tag/1.7.2
Strength should be almost the same, so testers should use this new version but don't need to throw away games of 1.7.1.

Andreas

[Terje]

I suppose Weiss is just better at very short time controls then. As always thanks for testing @Gabor, and also @xr_a_y