Ranking chess players according to the quality of their moves

How do you rate players from different periods? An AI researcher has undertaken to do it based not on the results of the games, but on the quality of the moves played. Jean-Marc Alliot used a strong chess engine running on a 640 processor cluster to analyse over two million positions that occurred in 26,000 games of World Champions since Steinitz. From this he produced a table of probable results between players of different eras. Example: Carlsen would have beaten Smyslov 57:43.

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