Reducing branching factor

[bob]

Idem as having hash hits or null move success hits, I am calculating % of nodes which are reduced or extended.

Of the total nodes (excluding quiesce nodes, as there I dont use extension), I am getting around 2% of total nodes are extended and arund 1% reduced.
These datas sound very few for me.

What are good % for extensions and reduccions, in average?

thx.

some samples from a recent game on ICC at about 3 minutes a move:

total nodes 390 million check extensions 24.7M, qchecks 23.9M, 1 legal reply extensions, 3.3M, mate threat extension 2.5M, I attempted to reduce 174M moves and actually reduced 33.1M.

total nodes 446M, check extensions 32M, qchecks 39.8M, 1 reply 3.6M, mate threat 2.2M, attempted to reduce 170M, reduced 39M

So yes, your numbers sound _way_ low...

[Kempelen]

total nodes 390 million check extensions 24.7M, qchecks 23.9M, 1 legal reply extensions, 3.3M, mate threat extension 2.5M, I attempted to reduce 174M moves and actually reduced 33.1M.

Hi Bob,
When you say 390 million total nodes, are you saying....

a) 390M = nodes + qnodes? or
b) 390M = nodes?

and.... are those number attemps or only succesfulls hits?

thx

[bob]

total nodes 390 million check extensions 24.7M, qchecks 23.9M, 1 legal reply extensions, 3.3M, mate threat extension 2.5M, I attempted to reduce 174M moves and actually reduced 33.1M.

Hi Bob,
When you say 390 million total nodes, are you saying....

a) 390M = nodes + qnodes? or
b) 390M = nodes?

and.... are those number attemps or only succesfulls hits?

thx

total nodes including q-search which do not get reduced. Not sure what you mean about "hits" however. In the above, 24.7M moves triggered the "give check" extension... I'm not sure what the "hit" means in this context...

[Kempelen]

total nodes including q-search which do not get reduced. Not sure what you mean about "hits" however. In the above, 24.7M moves triggered the "give check" extension... I'm not sure what the "hit" means in this context...

OK Bob, very clear now. I was confused with another concept. Thanks a lot.... as always.