Cheese 1.5

[Patrice Duhamel]

Hello,

Cheese 1.5 is available :
http://cheesechess.free.fr/en/download.html

I changed the names of executables, now "pop" at the end of the file name means this is the version
using hardware popcount (the fastest).

Changes :

Code: Select all

- add staged move generation
- fix problems in move validation
- fix problem in draw evaluation
- fix problem in mate distance pruning
- fix possible crash in long games
- fix problem in null moves pruning
- change node counting method (+1 before making a legal move in search)
- change history heuristic array (piece/to)
- disable recapture extension
- use check evasion in the first ply of quiescence
- add evaluation tempo bonus
- adjust mate scores in hash table
- few optimizations
- windows : replace QueryPerformanceCounter() function by GetTickCount()
- use UCI parameters seldepth, lowerbound, upperbound
- perft now return only nodes count (old perft renamed "perftd")

Regards,

Patrice.

[Modern Times]

On my AMD Phenom II X6, the popcount version is 11% faster, a decent increase !

[velmarin]

I changed the names of executables, now "pop" at the end of the file name means this is the version

"pop"
Hello, totally agree,
is short and beautiful.

I really like your page, and the engine, and I believe you have a lot to improve.

thank you very much.

[Patrice Duhamel]

I really like your page, and the engine, and I believe you have a lot to improve.

Thanks,

Yes I have lots of things to improve and bugs to fix,
the main problem is to find time and motivation.

[velmarin]

I really like your page, and the engine, and I believe you have a lot to improve.

Thanks,

Yes I have lots of things to improve and bugs to fix,
the main problem is to find time and motivation.

Excuse me, again the translator.

Now read what I did not want to write.
I wanted to say,
you seem to have a good base to work.
A very good base for improvement. Bitboard, speed, ect ..
No critical sovereign actual, Excuseme.



I tested with a mine beta version, with good results, stability, ect.
I liked.

[Patrice Duhamel]

I wanted to say,
you seem to have a good base to work.
A very good base for improvement. Bitboard, speed, ect ..
No critical sovereign actual, Excuseme.

It is what I understood reading your previous message, no problem.

Thank you.

[SzG]

I really like your page, and the engine, and I believe you have a lot to improve.

Thanks,

Yes I have lots of things to improve and bugs to fix,
the main problem is to find time and motivation.

Hello Patrice,

I have started a tournament for our blitz list, featuring Cheese 1.5 64-bit. Results should be available in two week's time, and I hope they will be encouraging enough to maintain your motivation.

BTW, I like your site.

Best wishes,

[Patrice Duhamel]

Tournaments are always encouraging.

Thank you.