Author: Hans Gerber
Date: 06:02:40 06/15/00
Go up one level in this thread
On June 14, 2000 at 15:06:49, blass uri wrote: >On June 14, 2000 at 13:46:20, blass uri wrote: > >>On June 14, 2000 at 10:30:37, Hans Gerber wrote: >> >>>On June 14, 2000 at 09:53:03, blass uri wrote: >>> >>>>On June 14, 2000 at 09:14:25, Hans Gerber wrote: >>>><snipped> >>>>>Did you see a situation before where a >>>>>computer rejected to win material? No please, not again the examples where also >>>>>Crafty rejected such pills. >>>> >>>>I saw cases when programs sacrificed material for positional advantage. >>>> >>>>The first game when a program sacrificed material for positional reasons was >>>>played in 1974 and most programs of today cannot find the right sacrifice >>>>in tournament time control. >>>> >>>>Uri >>> >>>Please give us some more details about that incident. Which program? What >>>position? Positional reasons? Please, I must know what you are talking about. >>> >>> >>>Hans >> >>[D]rq2k2r/3n1ppp/p2bpnb1/8/Np1N4/1B3PP1/PP2Q2P/R1BR2K1/ w >> >>This position is from the game Chaos-chess4.0 from 1974. >>Chaos played Nxe6 and won the game. >> >>Uri > >[D]rq2k2r/3n1ppp/p2bpnb1/8/Np1N4/1B3PP1/PP2Q2P/R1BR2K1 w kq - 0 1 > >I hope that the diagram now has no problem. > >Uri Why is this a demonstration of the rejection of a possible material win? Here are my thoughts about that position and the game. The position is theory and was already theory in 1974. I think that the game shows very well that already _then_ the opening preparation was most important. However if you look at the game you see that CHAOS did not "understand" the position. Is it not funny how CHAOS later refused the direct win with Bd6? For me this is a typical example for a computergame. Once let alone beyond the forced opening moves the machine starts to play weak chess. Fortunately the position is so good here that the machine can not destroy its advantage. Interesting also that CHESS 4 still became second in that tournament. The USSR program KAISSA won. I wished someone could tell us more about for example the programmers of CHAOS and CHESS. I saw some CHAOS games in my database coming from the nineties. Was that still the same program? Perhaps this game here is also a good example for those who doubt that the actual micros are really strong. What is their strength without the large opening section? Hans
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