Author: Robert Hyatt
Date: 06:35:53 08/31/00
Go up one level in this thread
On August 31, 2000 at 06:06:53, Graham Laight wrote: >On August 30, 2000 at 06:30:23, Alexander Kure wrote: > >>On August 29, 2000 at 23:19:59, Robert Hyatt wrote: >> >>>On August 29, 2000 at 19:18:17, Alexander Kure wrote: >>> >>>>On August 29, 2000 at 13:58:52, Graham Laight wrote: >>>> >>>>>Firstly, apologies to everyone for dashing off after the last game in the WMCCC. >>>>> >>>>>It enabled me to get an extra day's holiday with my girlfriend, though, which >>>>>was well worthwhile! >>>>> >>>> >>>>Well deserved, Graham! >>>>Thanks again for your work. >>>> >>>>[...] >>>> >>>>This game clearly showed that Fritz plays in a different league than Crafty! In >>>>fact I think this was one of the best games of the WMCCC. >>>> >>>>Greetings >>>>Alex >>> >>> >>>My take on this game is a bit different. I do _not_ want my program to make >>>such a sacrifice and then see the eval steadily go _down_ over the next few >>>moves. It means one of two things for it to win such a game: >>> >>>1. The eval is bogus. It is saying "this is bad" when in reality "this is >>>good". I don't want that sort of evaluation. >>> >>>2. The program was lucky. A little luck doesn't hurt. But it doesn't win >>>tournaments very often. >>> >>>Either the eval was wrong, or it was lucky. Neither one leave me feeling like >>>"fritz is in a different league than Crafty..." >>> >>>I suspect white has better moves that might have justified the pessimistic eval >>>Fritz had... The right program might have made that sacrifice look as ugly as >>>this game made it look brilliant... >> >>Hi Bob, >> >>When Graham said that Fritz's evaluation was steadily going down he meant that >>it was steadily increasing on the negative score thus going up for Fritz, as >>Fritz had black and the evaluation is always shown from white's point of view. > >Unfortunately, I have to disagree. > >As I remember it, immediately after the sac, Fritz scored itself as being >positive. Then, after a few moves, its eval went down to 0, and stayed there for >quite a while (Crafty was still scoring itself as quite positive - between 1 and >2 points). > >Eventually, of course, it came back up again and Fritz won the game. > >By the way, I will try to obtain Crafty's logs for tomorrow. The time setting >was 60/115/sd/25 - which means 60 moves in 115 minutes followed by game in 25 >minutes (the actual clock time was 60 moves in 2 hours and then complete the >game in 30 minutes). > >-g That looks perfectly reasonable. I have this sinking feeling that something else was _also_ reserving some extra operator time, which caused the faster than normal moving... Or else there is a bug that has gone undetected for at least a couple of years... > >>Greetings >>Alex
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