New Year's round dates are invisible. This happened with the 240th anniversary of Emperor Alexander I, whose anniversary almost no one remembered. “The Sphinx, unsolved to the grave,” as Peter Vyazemsky called him, was brought up as a republican and could become a model of an enlightened monarch. Instead, he proved the futility of autocracy. Favorite grandson, unloved son Until 1777, the name Alexander was not common among Russian tsars.