Mystery Lab / Exhibits & mechanisms
A Visible Move, a Hidden Control Path
Watch a pawn move, then open the screen. Next, compare two different controls that produce the same one-square movement.
What historical device inspired this activity?
The Mechanical Turk was a historical chess-playing figure. It appeared to play by itself, but a concealed person controlled the apparatus.
We have made a new toy model with an arm, pawn and screen. It is not a reconstruction, and you do not need to know chess. Compare the same one-square movement with the path that triggered it.
Watch the move, then open the screen to inspect the control path. Next, trigger the human button and the preset signal separately and compare the visible movements.
Continue with the story and its records
Explore how the difference you noticed connects with the surviving records of the historical story.
Read the chess automaton storyOpen the source
Sources and scope
We consulted the Computer History Museum’s introduction and playbill record, the HNF’s account of its own reconstruction, and a Deutsches Museum curator’s article. These four records come from three museum institutions; the playbill is held by the Library Company of Philadelphia.
- 01Mastering the Game: A History of Computer Chess Computer History Museum · Checked 2026-10-22
- 02Playbill for the Automaton Chess Player Computer History Museum · Library Company of Philadelphia 제공 자료 · Checked 2026-10-22
- 03The reconstruction of the HNF’s Chess Turk Heinz Nixdorf MuseumsForum · Checked 2026-10-22
- 04Schach, die Mensch-Maschine und die Anfänge der KI Deutsches Museum · Carola Dahlke, 정보학 큐레이터 · Checked 2026-10-22
The wording and diagrams are original. We reproduce no historical illustration, playbill or reconstruction photograph. The museum accounts of an internal human operator are separate from our invented external-button and preset-signal model.