Author: Robert Hyatt
Date: 12:55:04 08/22/01
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On August 22, 2001 at 13:48:53, Shep wrote: >On August 22, 2001 at 11:30:11, Robert Hyatt wrote: > >>You just haven't been around long enough. The first such game I recall was >>belle vs chess 4.7 in Washington DC in 1978. The game was back and forth, >>scores bouncing from +5 to -5 to +3 and so forth. Either side could have won > >Yes, but don't forget what sort of "playing strength" they had back then. They >could have easily missed some obvious things, either due to bad evaluation or >shallow search depth. >Overturning a seemingly "lost" game takes much more these days. The 1978 versions of Chess 4.x and Belle were winning most of their games vs GM players (5 0 blitz chess of course). They were both very dangerous. If you want to look at a fun game, check the 1978 game out if you can find it. It was probably the single best spectator-game I have ever seen played, as neither program made moves suggested by the strong players in the audience, and the tactics were extremely complicated. I saw more fail highs and fail lows in that one game than any other I remember watching... Sounds like the key position in the Junior game, except it happened many times on successive moves... :) Those programs were probably rated around 2000 in standard time controls... based on some tournaments they both played in back then. So no, not up to today's standards. But the game was as good as any I have seen since, from a pure excitement point of view... > >>that game. I have also seen it happen on ICC between computers. I have seen >>Crafty at -5 and win. I have seen it at +5 and draw or lose. With so few >>games, anything can (and probably will) happen. :) > >Also at longer time controls? I can understand this happens every once in a >while if you play bullet or blitz - but at 30/game or longer? yes. I have seen it happen both to me and to my opponent in 60 30 type games. Admittedly, not frequently. It is a pretty rare thing. But it is not a particularly pleasant thing to see your eval go from +5 to +3 to +.5 to -2, to -5 over a series of moves. :) It is far more common at blitz chess... obviously... That is where the humans score their infrequent points, in tactical positions (long-term kingside attacks) where the program thinks it is winning until it finally sees it is losing badly. > >--- >Shep
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