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Garry Kasparov had to grind his teeth in his WCh match in the year 2000, since he was unable to win a single game with White against Vladimir Kramnik’s Berlin Defence. The latter then received the nickname of the Berlin Wall. As a result 3...Nf6 against the Ruy Lopez also became ever more popular amongst other grandmasters and the analytical efforts were stepped up in order to find for White some sort of promising setup against this super-solid defence.