A famous problem attracted my attention for examination and revision so as to enrich part of chess history that is connected to real history of Bonaparte Napoleon (1769-1821).
All the more so since 2015 is the 200th anniversary of the remarkable Waterloo battle.
This well-known work-piece was created by the best Russian player, theoretician and chess writer of that time Alexander D. Petrov (1794-1867). The Petrov (Petroff) Defense was named after him, and he was also good at constructing chess problems.