This will be my last post on this subject for awhile. In about two weeks Swami will be conducting a quick tournament that RomiChess (with PVS extensions) will play in. If anyone is interested in my work on this subject then keep a watch out for the results of Swami's tournament.Michael Sherwin wrote:I have played with overlapping pairs counting (I am not finished) and sofar no benifit against other programs.
However, I have finished a full 100 game match vs Hamsters 0.2 at 1+1 time limit using a scheme similar to what I have already posted. The result was Romi, +60 -29 =11 for a new 1+1 record! The 1+1 record previous to the current NG series was 63.5/100 and the 4+4 record of the NG series is 64.5/100.
The key point to be made sofar is that the 1+1 performance of the NG series fell to about 50% (that is why I went to 4+4 testing), so 65.5/100 at 1+1 is a 115 ELO performance increase!
I am planning a few more test and if I can show an even better performance I will post the results.
I now have a very positive PVS-PAIRS extention. It extends a full ply, but only based on one pair of hash moves. It is a very rstricted , but powerful extension and does not explode the tree. Needless to say, it is much different than Ed's.
Sofar, this extension is also giving a performance boost of over 100 ELO and if it can be combined with the other one already developed then the ELO gain may be even more.
There is also an anti-PVS extension that I have discovered, that when a hash move that previously caused a beta-cut fails to cut, then extend the next n alternative moves. This also gives a good ELO boost.
THERE IS GOLD IN THEM THERE HILLS!