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This video investigates the crucial 3...Nf6! (Berlin) approach to the Ruy Lopez and sets the stage for a deeper investigation. The Berlin was used four times by Anand in the recent WCh match against Carlsen. There he scored two draws (using the main line 9..Ke8 and 10...h5! shown in this video) and two losses when Carlsen used d3! and also when Anand deviated from 9...Ke8 with the 9...Bd7 plan (also mentioned in this video). Enjoyed!
See more on Ruy Lopez at http://chessopenings.com/ruy+lopez/