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In this endgame we once again see how a knight fights against a bishop. However, in this example the bishop has the better of it because White's position suffers from a number of weaknesses and Black not only has an active king but also a very mobile bishop.
Black indeed won the game and Rubinstein's way of playing the endgame seems to be a model for this type of positions in which Black plays on both sides to seek for a win.
But are things really that clear? Was Rubinstein really winning at the beginning of the endgame, or could Réti have defended better at some point? The reader is invited to join the search for the truth: did Réti have a draw at some point? And if so, when, where and how?
Share your analyses, ideas and discoveries in the comments!