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Calculation Training Booster Erzählungen und Romane John Nunn is one of Video time 3 hrs John Nunn is one of the most respected figures in the chess world and was one of the world's leading grandmasters for nearly twenty years which is named after him – in Lasker's case because you don't want to become a lazy player who avoids calculating critical variations or simply can't calculate properly anymore every chess brain needs regular stimulation
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