Connect 4: minimax algorith not working

[FlyingWolFox]

After testing single player mode, discovered that the minimaxPlay function sets the botton line to 1 .
Happens like:

• Game started
• I type 1 (botton line first column is my play)
• After the minimaxPlay, the botton row is all set to 1
  and the minimax play above mine
  Why? it isn't undoing moves?

[FlyingWolFox]

AI doens't play correctly. Whyyyyyy

[FlyingWolFox]

Now the minimaxPlay uses a copy of the grid. This fixed, partially. The AI just play in one column in serie, not matering what I play. Here we go...

[FlyingWolFox]

AI disabled for now. Let's see if I can fix it