Laser 1.2 Release

[jeffreyan11]

Laser 1.2 has now been released and is available at
https://github.com/jeffreyan11/uci-ches ... s/tag/v1.2

Self-play regressions:
+114 in 8000 games at 3+0.02
+109 in 4000 games at 15+0.05

Estimated CCRL elo is 2850

Major changes:
King safety and passed pawn improvements
Cleaner code and faster compile

[Damir]

Thanks Jeffrey. Much appreciated. You are doing wonderful work so far..

[Frank Quisinsky]

Hi Jeffrey,

added in my ToDo list.

Nice news !!

Thanks and Best ...
Later

Frank

[Graham Banks]

Excellent progress!
Thanks Jeffrey.

[Gregory Owett]

Hi,
Excellent engine, unfortunately it loses often on time. In 24 games he lost seven times. Pity. (/Arena 3.5 /TC: 5'+3")

[Werner]

Hi,
thanks for the engine!
I play under Shredder GUI - so long no lose in time here till now.

Code: Select all

Laser 1.2 x64 1CPU   - Spark 0.4 w32 1CPU            21.0 - 22.0    +11/=20/-12    48.84%
Laser 1.2 x64 1CPU   - Dirty Apr2015 x64             28.0 - 15.0    +20/=16/-7    65.12%
Laser 1.2 x64 1CPU   - Umko 1.2 x64 1CPU             26.0 - 17.0    +16/=20/-7    60.47%
Laser 1.2 x64 1CPU   - Crafty 24.1 JA x64 1CPU       26.5 - 16.5    +20/=13/-10    61.63%
Laser 1.2 x64 1CPU   - Deep Shredder 11 x64 1CPU     27.5 - 15.5    +21/=13/-9    63.95%  

regards

[jeffreyan11]

Hi Gregory,

I haven't run into any time losses in my own testing. I found that Arena often becomes very slow, especially during tournaments, and then scores the engines as losing on time. Are you sure that isn't what happened?

[Gregory Owett]

Hi Jeffrey,
Not specially. Other engines work very well, without slowing. Besides, your Laser 1.1 works flawlessly. I'll try the L 1.2 under CB, and we'll see. Thanks again.

[Gregory Owett]

Hi,

I found the cause of the problem.

As it lost too in the same manner under ChessBase as under Arena, I reduced the threads for 4, (as the number of CPU).

Everything is OK now. Apparently, it don't support HyperThreading.

On my other AMD machine, (8 cores, 8 threads) it run well too.

All the best

[jeffreyan11]

Interesting, I've never actually tested with hyperthreading. Thanks for letting me know!