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

Created by Doug Hull

Solve Later

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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Solution Stats

1340 Solutions
378 Solvers

Last Solution submitted on Jan 18, 2020

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

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.

Solution Comments

Solution 1384243

1 Comment

1 Comment

Daniel on 18 Dec 2017

Shouldn't Test 7 be y_correct = 1?

Solution 1380949

1 Comment

1 Comment

Michal Dobai on 15 Dec 2017

To be fair, you didn't mention anything about anti-diagonal in your problem description (test no. 4). Or am I missing something?

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Problem Tags

cody5 noughts and crosses