Can you pull from my branch ?

Marco,

* i've removed some defective code in the search, as well as the entire space evaluation
* i've also merged all the patches from your master branch since I forked

All patches have been tested with a consistent methodology: 8000 games in 10"+0.1", SF's book limited to 10 moves, except for the space eval where I used bookdepth=8.

I've also run a test of my branch vs yours:
https://github.com/mcostalba/Stockfish/commit/76caef8ba1fb4ca0520a8e2b42815d626484e93c
https://github.com/lucasart/Stockfish/commit/6398e7d8a47db1e641fb82181e57ae3aaea76324
8000 games in 10"+0.1"
1825-1598-4577 [51.4%] LOS=100.0%

Lucas