1. Murray, H. J. R., A History of Chess (Oxford Univ. Press, London, 1913).
2. Good, I. J., Machine Intelligence, 2 (edit. by Michie, D., and Dale), (Oliver and Boyd, Edinburgh, 1968).
3. Binet, A., Psychologie des Grands Calculateurs et des Joueurs d'Echecs (Hachette, 1894).
4. De Groot, A. D., Thought and Choice in Chess (Mouton, The Hague, 1965).
5. Murray, H. J. R., A History of Board Games other than Chess (Oxford Univ. Press, London, 1952).