📜 Theorem, law or theory

Sprague–Grundy theorem

Teorema de Sprague-Grundy

Date
1935-1939 · confidence low
Place
United Kingdom
Credited to
Roland Sprague and Patrick Michael Grundy
Field
Knowledge & symbols

What was discovered

The Sprague–Grundy theorem, in combinatorial game theory, states that every impartial game under the normal play convention is equivalent to a single-heap game of nim, and can be represented by a natural number (the Grundy value or nimber) that determines its optimal strategy.

What it led to

  • Unified theory of impartial combinatorial games
  • Algorithmic basis for solving nim and its variants
  • Applications in artificial intelligence for combinatorial games
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Sources✓ verified 2026-09-28