New engine releases 2020

[Guenther]

Drofa 2.00 released
https://github.com/justNo4b/Drofa

[OliverBr]

Drofa 2.00 released
https://github.com/justNo4b/Drofa

Interesting engine, improved about 270 ELO from Version 1.01. and is now easily compiled on MacOSX, too:

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drofa           uci     -330    2.0.0   https://github.com/justNo4b/Drofa

compared to

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drofa 		uci 	-600	1.0.1	https://github.com/justNo4b/Drofa

[No4b]

Drofa 2.00 released
https://github.com/justNo4b/Drofa

Interesting engine, improved about 270 ELO from Version 1.01. and is now easily compiled on MacOSX, too:

Code: Select all

drofa           uci     -330    2.0.0   https://github.com/justNo4b/Drofa

compared to

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drofa 		uci 	-600	1.0.1	https://github.com/justNo4b/Drofa

If my tests are right, it should be 2450 - 2500 elo at TC similar to the ccrl blitz ( see http://talkchess.com/forum3/viewtopic.p ... 57#p871857), so more like +400 elo in my tests

ALthought i must admit Drofa perform significantly worse vs opponents with decent KingSafety.

[OliverBr]

ALthought i must admit Drofa perform significantly worse vs opponents with decent KingSafety.

I had both versions played hundreds to games against OliThink 5.9.0 which has virtually to none king safety. But a very fast time control (12 seconds for 40 moves).

[No4b]

ALthought i must admit Drofa perform significantly worse vs opponents with decent KingSafety.

I had both versions played hundreds to games against OliThink 5.9.0 which has virtually to none king safety. But a very fast time control (12 seconds for 40 moves).

Oh, one of my patches on the way to 2.0 really hurt in the move-based TCs if time is really low (~several seconds), but really improved play in all other TCs. I guess that the reason.

[Guenther]

ALthought i must admit Drofa perform significantly worse vs opponents with decent KingSafety.

I had both versions played hundreds to games against OliThink 5.9.0 which has virtually to none king safety. :) But a very fast time control (12 seconds for 40 moves).

I think OliThink relatively excels vs. over programs (up to a certain strength) at very fast tc, due to its speed and (pruned) high depths.
I still have a match vs. Halogen_dev20201106 to report from a few days ago and it was nearly equal to it at 40s/40 over 200 games at least.
(may be it's also because my slow hardware favours it, but that's just speculation)

Just need to replay one game to have it done, because it also was a test for resuming tournaments/matches in Cutechess GUI dev.
Currently under my conditions and with long break time inbetween the first program doesn't start in time and one game needs to be repeated.

[OliverBr]

Oh, one of my patches on the way to 2.0 really hurt in the move-based TCs if time is really low (~several seconds), but really improved play in all other TCs. I guess that the reason.

If you are interested:
I played two tournaments, one with very fast time control 40/12, the other with 40/30, there wasn't much difference actually:

40/12:

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   # PLAYER            :  RATING  ERROR  POINTS  PLAYED   (%)     W    D     L  D(%)  CFS(%)
   1 OliThink 5.9.0    :     341     20  1749.0    2000  87.5  1627  244   129  12.2     100
   2 Drofa 2.0.0       :       0   ----   251.0    2000  12.6   129  244  1627  12.2     ---

White advantage = 24.04 +/- 10.45
Draw rate (equal opponents) = 21.10 % +/- 1.26

40/30:

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   # PLAYER            :  RATING  ERROR  POINTS  PLAYED   (%)     W    D     L  D(%)  CFS(%)
   1 OliThink 5.9.0    :     355     20  1764.0    2000  88.2  1640  248   112  12.4     100
   2 Drofa 2.0.0       :       0   ----   236.0    2000  11.8   112  248  1640  12.4     ---

White advantage = 30.37 +/- 10.69
Draw rate (equal opponents) = 22.57 % +/- 1.32

Quite surprisingly Drofa 2.0.0 did a little better with 40/12.
The white advantage is bigger on slower time controls, that was to be expected (less coincidence).

[Kieren Pearson]

New Halogen release

https://github.com/KierenP/Halogen/releases/tag/v8.1

Should be on CCRL 40/15 about 3050 elo

[AndrewGrant]

New Halogen release

https://github.com/KierenP/Halogen/releases/tag/v8.1

Should be on CCRL 40/15 about 3050 elo

Very important SMP changes, for people running on moderate to very high core counts.

Congrats on the release.

[OliverBr]

New Halogen release

https://github.com/KierenP/Halogen/releases/tag/v8.1

Should be on CCRL 40/15 about 3050 elo

In my ultra-bullet-tests 8.1 looks 141 ELO stronger than 8:

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   # PLAYER            :  RATING  ERROR  POINTS  PLAYED   (%)     W    D     L  D(%)  CFS(%)
   1 Halogen 8.1       :       0   ----  1331.0    2000  66.5  1128  406   466  20.3     100
   2 OliThink 5.9.0    :    -121     14   669.0    2000  33.5   466  406  1128  20.3     ---

White advantage = 12.99 +/- 7.45
Draw rate (equal opponents) = 21.89 % +/- 0.97

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   # PLAYER            :  RATING  ERROR  POINTS  PLAYED   (%)    W    D    L  D(%)  CFS(%)
   1 OliThink 5.9.0    :      20     14  1058.0    2000  52.9  851  414  735  20.7     100
   2 Halogen 8         :       0   ----   942.0    2000  47.1  735  414  851  20.7     ---

White advantage = 12.67 +/- 6.93
Draw rate (equal opponents) = 20.76 % +/- 0.92

Faszinating how almost everybody seems to surprise the 3000 quite easily. Others need over 20 years and still not there.