The board positions and moves made are identical with the conclusion of a real game: Roesch–Schlage, Hamburg 1910, which was reported in a 1955 collection of short games by Irving Chernev.
The board positions and actions align with those observed in a real game, the Roesch–Schlage match held in Hamburg in 1910, as described in Irving Chernev's 1955 anthology of concise games.