Attention : Minski's study, although apparently correct, has a branching on the 3rd move which leaves the "main line" in doubt. Kazantsev's study, although apparently correct despite minor duals, also has a branching, this time on the 1st move, which leaves the "main line" in doubt. It is better to know this before thinking on these two studies. Do you know why? It was the 2009 selector again.
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