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You can find many GM games, even World Championship games, where the engine may say -3 or more in a position and the losing player has not resigned. I notice it all the time. You would not have to look at a lot of games to find an example. Bottom line, they will resign when they are sure they have no practical chances.
" Bottom line, they will resign when they are sure they have no practical chances."
Exactly! A position that is objectively lost, but full of tactical chances and swindling opportunities may be well worth continuing on, while a position without any counter chances or opportunities to complicate things will be given up.
Also, computer evaluations can be very misleading. The computer may evaluate a position as winning, but the actual win requires some astonishingly deep tactics--the kind that computers are good at, but where 99.9% of humans wouldn't be able see that far
Thanks a lot. I appreciate all your replies.
The resignation is not related to an engine's evaluation, but the consideration that there's an unstoppable winning plan, which can be spotted by both players, and followed with enough precision by the winning side.
Now, Nakamura said that, in his experience, at 0.9 is very difficult to hold a position. Then again, players don't know the engine's numbers and few surrender just because it's very difficult.
Now we have an evaluation algorithm running constantly in Live Chess Games ??
What a BONEHEADED idea.
Watch any game Game in 3/0 between two player 2500+ and the evaluation function jumps all over the map (and at numbers above 1.5+) but the 2500+ players know it's all BS and they keep on playing, obviously.
Is this just another (nutty) layer of distraction from the V3 light show ??
Why should a screen for a chess game (which requires focus and concentration in order to follow GM play) read like a cable TV broadcast ?? Yikes !