Author: Robert Hyatt
Date: 14:55:02 04/13/01
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On April 13, 2001 at 15:25:02, Will Singleton wrote: >[ side issue ] > > > 13-> 4.58 -1.69 1. cxb4 a4 2. b5+ Kxb5 3. Rb1 c3 4. > Rc1 Kc4 5. Ba3 Kxd4 6. Kf4 Kd3 7. Rd1+ > Kc4 <HT> > 14 4.91 ++ 1. cxb4!! > 14-> 19.08 -1.30 1. cxb4 a4 2. b5+ Kxb5 3. Rb1 c3 4. > Rc1 Kc4 5. Ba3 Kxd4 6. Kf4 Kd3 7. Rd1+ > Kc4 <HT> > >This is off the topic, but of what value is the PV in ply 14, since it offers no >enlightenment beyond ply 13? It seems that the problem is the potential memory >required to store the PV in the hash, hence the <HT>. Clearly the real PV is >different. I wonder if there's a better way to show the difference. > >Will In this case, it was a fail high at the root, but then the move failed low due to a hashing incident... The previous (13 ply) pv is saved in these cases to give a better chance at move ordering at depth=15.
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