Uri Blass wrote:I wonder if tord found mate threat extension counter productive or he simply did not try it:
It is simply not implemented yet, just like a lot of other search tricks. Glaurung 2 is still in its early infancy. Whether the mate threat extension helps at all is also a question. I don't recall ever having tested it carefully.
A more interesting difference between Glaurung 1 and Glaurung 2 is that the new version extends recaptures at PV nodes. I tried this several times in Glaurung 1, and it always made the strength drop like a stone. In Glaurung 2, it seems to work (although I have not tested enough to be completely sure). I have no idea why.