# Tic Tac Toe evaluate optimization

Tic Tac Toe evaluate optimization I had a thought that I can do a better job of
evaluating the position in my Tic Tac Toe game. For each unevaluated position,
I go through all the rows, columns and diagonals and check for` xxx`

or `ooo`

.
I realized I can do something clever by only evaluating on a move. I only need
to check the row of the last move and the column. I only check the major and
minor diagonals if the last move lies on the diagonal. The change doubled the
speed.

I still needed to keep the original code so I can evaluate the initial position since there is no last move.