Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5777644 | Journal of Combinatorial Theory, Series B | 2017 | 34 Pages |
In the Oriented-cycle game, introduced by Bollobás and Szabó [7], two players, called OMaker and OBreaker, alternately direct edges of Kn. OMaker directs exactly one previously undirected edge, whereas OBreaker is allowed to direct between one and b previously undirected edges. OMaker wins if the final tournament contains a directed cycle, otherwise OBreaker wins. Bollobás and Szabó [7] conjectured that for a bias as large as nâ3 OMaker has a winning strategy if OBreaker must take exactly b edges in each round. It was shown recently by Ben-Eliezer, Krivelevich and Sudakov [6], that OMaker has a winning strategy for this game whenever b