This version is not the same as version that played first 2 rounds in WBEC.
This is also not the version that scored well against Fruit.
I decided to pick beta that scores very well against attacking engines, but plays slightly worse (although still better then 1.9 I think) against the positional engines.
It will be interesting to see how much more (if any) ELO points I get with this version, since I didn't have time to do some comparison matches for both 1.9 and 1.91.
And as mentioned on WBEC, if you are running Naum on a very slow machine (dual P3 for instance) and using 5pc TBs, it is better to disable TBs for Naum altogether. I think 5pc TBs on a slow machine (or slow hard drive) do more damage then good for Naum.
Alex