Alexander I and the mystery of Fyodor Kuzmich

Tsar Alexander I died in 1825 in Taganrog, far from the capital of the empire, - died unexpectedly, when it seemed, his rule was still destined for many years. His death spawned a lot of rumors. Among others was such that the sovereign was secretly retired from affairs, because during his lifetime he often spoke of the desire to renounce the throne. And after an incomplete eleven years in the Perm province, he was detained, Bit whip for the vagabond and exiled a mysterious person to Siberia, called Fedor Kozmich. Many signs indicated on his belonging to the highest aristocracy, but Fyodor Kozmich refused to open his real name and went to the grave, leaving after himself only two encrypted notes. Solva saw in him Alexander I, and part of the researchers was inclined to the same opinion ...
Professor Konstantin Kudryashov details all versions of this confusing history and gives his answer to the question of whom was the mysterious elder