English

Almost optimal pairing strategy for Tic-Tac-Toe with numerous directions

Combinatorics 2010-06-01 v1 Number Theory

Abstract

We show that there is an m=2n+o(n)m=2n+o(n), such that, in the Maker-Breaker game played on Zd\Z^d where Maker needs to put at least mm of his marks consecutively in one of nn given winning directions, Breaker can force a draw using a pairing strategy. This improves the result of Kruczek and Sundberg who showed that such a pairing strategy exits if m3nm\ge 3n. A simple argument shows that mm has to be at least 2n+12n+1 if Breaker is only allowed to use a pairing strategy, thus the main term of our bound is optimal.

Keywords

Cite

@article{arxiv.1005.5469,
  title  = {Almost optimal pairing strategy for Tic-Tac-Toe with numerous directions},
  author = {Padmini Mukkamala and Dömötör Pálvölgyi},
  journal= {arXiv preprint arXiv:1005.5469},
  year   = {2010}
}
R2 v1 2026-06-21T15:29:33.572Z