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I do not hash Qsearch, Eval, or Pawn stuff. I have tried Qsearch and Eval hashes a couple times, with no luck...my guess is all three are helpful if done well but not if done poorly. -Sam I have experimented with Glaurung 2.1. I have found a very good improvment when hashing in qsearch. My guess is...

It would be nice if you could confirm all this with results of your measurements after switching to "fixed depth". Sven Hi Sven, I'm sorry, I did not express myself clearly. The test I did were indeed fixed depth searches. What I meant is that they need about 1 minutes to complete. Sorry, but I ask...

Hi, Now I added MVV/LVA (the captures are now ordered) and I'm disapointed of the result. When I run a benchmark on 5 differents positions for about 1 minute, the MVV/LVA version does search 381.3M nodes while the non-MVV/LVA version searches 383.5M nodes. That's only a reduction of 0.6% of the nod...

memcmp is a dirty trick to say at least, don't use it, is not portable, is compiler dependent, is endian dependent, is probably broken and most impostant is unnecessary for you. :shock: rubbish True, it is not endian dependent. :-) No, it was none of things stated :P I promise to myself not to answ...

memcmp is a dirty trick to say at least, don't use it, is not portable, is compiler dependent, is endian dependent, is probably broken and most impostant is unnecessary for you. :shock: rubbish Of course memcmp() is a standard function. But just compares RAM. Is the use of memcmp to compare struct ...

memcmp is a dirty trick to say at least, don't use it, is not portable, is compiler dependent, is endian dependent, is probably broken and most impostant is unnecessary for you. :shock: rubbish Of course memcmp() is a standard function. But just compares RAM. Is the use of memcmp to compare struct ...

Thank you all for your answers. Now please consider the special case of a struct with no pointers in it and the compiler switch to padding with 1 byte turned on. BTW does padding with 1 byte mean no padding bytes at all? The sizeof(structname) would be what we see in the code with no hidden bytes?....

Ok. First the structs in c/c++ are traslated as: struct Board_type { long w; long b; long q; }; struct ClassicBook_type { Board_type brd; int score; unsigned char searchDepth; unsigned char flags; }; Ok now I consider you want compare variables of type ClassicBook_type on the Board_type (I'm guessin...

Please post the struct you need to compare and tell what are the fields (if not all) on which make the comparison.

I think that it may be interesting to see chess source code not only in the final form but also during the construction of it and I think that there is more chances that we are going to see it if people have an easy way to save screens during the process. Uri Perhaps a version control system (http:...