A pspace complete problem related to a pebble game

  • Andrzej Lingas
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 62)


The pebble game on AND/OR dags which is natural generalization of a well known pebble game on dags is considered. The following problem is given: if k pebbles are enough to place a pebble on a given vertex of an AND/OR dag. It is shown that the problem is log-space complete for languages accepted in polynomial space.


dag pebble game AND/OR graph computational complexity PSPACE completeness in polynomial space 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1978

Authors and Affiliations

  • Andrzej Lingas
    • 1
  1. 1.University of WarsawWarszawaPoland

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