This follows on from problem 44850 - X O X O

https://www.mathworks.com/matlabcentral/cody/problems/44850-x-o-x-o

On a noughts and crosses board, how many possible unique combinations are there given a square grid of length n?

Assumptions/constraints:

  • All squares are populated.
  • Number of naughts and number of crosses can only differ by a maximum of 1 I.E. The game was played until the board was full.
  • A solution with more than one "win" cannot be valid as the game would have finished before the board was full!
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Last Solution submitted on Sep 13, 2026

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Chris Cleveland George Berken ChrisR Lorenzo

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