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A game, also called Tactix, which is played by the following rules. Given one or more piles (Nim-Heaps), players alternate by taking all or some of the counters in a single heap. The player taking the last counter or stack of counters is the winner. Nim-like games are also called Take-Away Games and Disjunctive Games. If optimal strategies are used, the winner can be determined from any intermediate position by its associated Nim-Value.

See also Misère Form, Nim-Value, Wythoff's Game


Ball, W. W. R. and Coxeter, H. S. M. Mathematical Recreations and Essays, 13th ed. New York: Dover, pp. 36-38, 1987.

Bogomolny, A. ``The Game of Nim.''

Bouton, C. L. ``Nim, A Game with a Complete Mathematical Theory.'' Ann. Math. Princeton 3, 35-39, 1901-1902.

Gardner, M. ``Nim and Hackenbush.'' Ch. 14 in Wheels, Life, and other Mathematical Amusements. New York: W. H. Freeman, 1983.

Hardy, G. H. and Wright, E. M. An Introduction to the Theory of Numbers, 5th ed. Oxford, England: Oxford University Press, pp. 117-120, 1990.

Kraitchik, M. ``Nim.'' §3.12.2 in Mathematical Recreations. New York: W. W. Norton, pp. 86-88, 1942.

© 1996-9 Eric W. Weisstein