A Combinatorial Problem Which Is Complete in Polynomial Space

Author:

Even S.1,Tarjan R. E.2

Affiliation:

1. Department of Computer Science, Technion, Haifa, Israel

2. Department of Computer Science, Stanford University, Stanford, CA

Abstract

This paper considers a generalization, called the Shannon switching game on vertices, of a familiar board game called Hex. It is shown that determining who wins such a game if each player plays perfectly is very hard; in fact, if this game problem is solvable in polynomial time, then any problem solvable in polynomial space is solvable in polynomial time. This result suggests that the theory of combinational games is difficult.

Publisher

Association for Computing Machinery (ACM)

Subject

Artificial Intelligence,Hardware and Architecture,Information Systems,Control and Systems Engineering,Software

Reference9 articles.

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2. construcUve graph-theoretic soluuon of the Shannon switching game;RuNo J;IEEE Trans on Clrcutt Theory CT-17,1970

3. COOK S The complextty of theorem-proving procedures Proc Third Annual ACM Symp on Theory of Computing 1971 pp 151-158 10.1145/800157.805047 COOK S The complextty of theorem-proving procedures Proc Third Annual ACM Symp on Theory of Computing 1971 pp 151-158 10.1145/800157.805047

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