Author: Robert Hyatt
Date: 07:13:58 11/26/97
Go up one level in this thread
On November 26, 1997 at 01:15:55, Jouni Uski wrote: >Eval is -4,xx, but does it matter? If correct move is found by wrong >reason, it >still is found... possibly. But in this position, *any* move but Na5 loses. Na5 draws, but if a program doesn't know this, this position doesn't test its knowledge of B+RP endings at all, just its tactical speed. As I mentioned, Cray Blitz finds this in a couple of secnds, but *never* says DRAW, even though it has B+RP code. This is convincing that search alone won't find this, because I doubt there is anyprogram (other than DB) that can come close to the tactical ability of CB (don't forget, this program solves *all* 300 WAC positions in 1 second or less. 297 in under cond... One of the other positions in the 5 position test are good knowledge tests, #4. the other three are generally tactical as they are tests to find a win tactically, although knowledge does play into a couple of them as it is necessary to avoid obvious draws... But if the goal is to test knowledge, #5 doesn't do it, as a program with *no* knowledge about B+RP endings will still discover that Na5 is forced...
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