How To Win In Tic-Tac-Toe

[Etheryte]

Like I said

Code:

_|_|_
_|_|_
x|_|_

Code:

_|_|_
_|o|_
x|_|_

Code:

_|_|x
_|o|_
x|_|_

Code:

_|o|x
_|o|_
x|_|_

Code:

_|o|x
_|o|_
x|x|_

Code:

_|o|x
_|o|_
x|x|o

is a tie, but

Code:

_|_|_
_|_|_
x|_|_

Code:

_|_|_
_|o|_
x|_|_

Code:

_|_|x
_|o|_
x|_|_

Code:

o|_|x
_|o|_
x|_|_

Code:

o|_|x
_|o|_
x|_|x

So it depends on whether O places diagonally or not.