Problem 44363. Is this is a Tic Tac Toe X Win?

Doug Hull

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For the game of Tic Tac Toe we will be storing the state of the game in a matrix M.
For this game:
We would store the state as this:
-1  1  1 
 1 -1 -1
 1 -1 -1
If there were any blanks squares, they would be 0;
For this challenge, given a game state, does X (1) have a three in a row on any row, column or major diagonal?

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Last Solution submitted on Jan 13, 2026

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Sean de Wolski on 17 Oct 2017

Solution 7 should be correct. The diagonal of -1s is a valid win.

Hope all is well with you, Doug!

Ned Gulley on 17 Oct 2017

@Sean, I think Doug's got it right. He's asking only if the X side (that is +1) is in a winning position. In test 7, the O side (-1) is in a winning position. So the answer given is correct.

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