For fifteen moves this is a mirror. Both sides play the same pawns to the same squares, both bishops end up aimed at the same diagonals, and the only thing either player can own is time. Rubinstein finishes the opening two moves to the good, which sounds like nothing, and then converts it into a finish where his queen and both rooks hang at once. The annotators are unusually united on where it went wrong: Marco in 1908, Edward Lasker soon after, and John Bartholomew a century later all put White's mistake on the same quiet queen move, and all three name the same alternative.