This is typical of the PDF’s efficiency: a clear positional goal, a concrete variation, and an engine-tested evaluation.
(Deducting one point only for the lack of a 1.e4 white option and the dense prose style). For serious improvers, it is essential. kaufman 39-s new repertoire for black and white pdf
Let’s open a hypothetical page from the PDF. Kaufman writes: This is typical of the PDF’s efficiency: a