1)It is funny that rybka3 finds Ne5 in the relevant thread but a single case when rybka cannot find the best move can prove nothing.Uri wrote:Kramnik is no longer in the top 5 but yes I believe he can still beat Rybka.bigo wrote:i notice you left out kramnik?/ is it because of his lost to deep fritz 10 a program 200 points weaker then rybka? Btw the match was at 40/2 so the human had plenty of time
Think about it. Even with using alpha-beta pruning, a computer still needs to go through (or check) every move in the tree which can take a lot of time. Alpha-beta pruning also weakens the engine in some tactical positions. The computer might miss a tactical move which is actually the best one (see this thread)
A top GM doesn't need to go through every possible move because he knows by memory and experience which of these 47 moves is the best one without having to go through every move in the tree.
The human mind is incredibly parallel and computers havn't reached that level of parallelism yet. It will still take a lot of time under they do.
2)A top GM does not know by memory and experience what is the best move(otherwise top GM's could avoid mistakes and they cannot do it).
3)Rybka is using other pruning methods except alpha-beta
4)Computers are clearly parallel and I doubt if the human mind is.
Try a simple exercise that is similiar to using 4 cores.
Ask 4 humans to talk at the same time about 4 different subjects and try to understand what everyone is saying.
Can you do it?
Computers probably will have no problem to do it assuming that they can understand what one person say.
They may be inferior to humans in subjects like understanding human voice but as soon as they get it they will have no problem to understand many human voices at the same time.
Uri