H. G. Muller wrote on Wed, Nov 8, 2017 06:09 PM UTC:
I don't think this is so mysterious. It will become apparent pretty quickly that a Rook is stronger than a minor, and that with equal number of Pawns on each site, the Rook almost always wins. And that one extra Pawn is still not enough compensation, and the minor has to fight very hard to achieve a draw. A couple of hundred such end-games, possibly with deep analysis to see if they were played optimally, would already lead you to such conclusions.
I don't think this is so mysterious. It will become apparent pretty quickly that a Rook is stronger than a minor, and that with equal number of Pawns on each site, the Rook almost always wins. And that one extra Pawn is still not enough compensation, and the minor has to fight very hard to achieve a draw. A couple of hundred such end-games, possibly with deep analysis to see if they were played optimally, would already lead you to such conclusions.