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11. Tic-tac-toe

Tic-tac-toe: is it possible for '0' to win?

Assuming best play by both players, the first move always wins or draws.

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What is fael spelt backwards?

Comments (6)

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Anonymoussays...

This is a guaranteed win for O if he's good. It's O's turn to play, he plays O in center square. If X plays anything other than X in middle column bottom row, O plays there on their next turn and win. If X plays in middle column bottom row, then O plays in first column top row, now O has two semi-complete lines and it's impossible for X to block both of them. If X plays on third column bottom row, O plays on third column top row, and vice versa.

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Juibbisays...

No if x player is good.

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Regular
mosays...

'O' must win if the center square or any of the remaining blank top squares are played first.

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carlasays...

Yes, nobody says that X will play well. it is posible for X to play bad, too. hhh.

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McVittysays...

Exactly, and to continue playing bad for ever and ever.

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stevesays...

This one's quite difficult!

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Khaledsays...

It's a win for O 100% since it's his turn, here's how:

O will place his 2nd O just left to the current 1st O in the image, then X will have to put his 2nd X right to the original O (otherwise O will put his 3rd O there and win), then O will put his 3rd O under original 1st O, then X will either put his 3rd X under 3rd O and O will then put his 4th X in the bottom right corner and win diagonally, OR X will put his 3rd X in that same corner and here O will be putting his 4th O under the 3rd O and win vertically in the middle column

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