Author: Andrew Platt
Date: 08:00:12 09/09/04
Go up one level in this thread
On September 09, 2004 at 10:36:26, Robert Hyatt wrote: >>Qxf4 Be5 Rxh5 Bxf4 (ply 4, depth 270) >> >>In iteration 10 the search reaches this point pretty quickly: >> >>Qxf4 Bxf4 Rxh5 NULL_MOVE (ply 4, depth 210) >> >>Since with the null move this becomes white to move, that makes the position >>identical to the one above stored in the hash table. > >Maybe I don't understand your explanation, but I do not see how this is >possible. The position after Qxf4 Be5 Rxh5 Bxf4 is _not_ the same as the >position after Qxf4 Be5 Rxh5 NULL. That's not quite the search I described. The second one is Qxf4 *Bxf4* Rxh5 NULL which as far as I can see is identical to the first one. Andy.
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