Git Tac Toe - TheEvergreenStateCollege/upper-division-cs-23-24 GitHub Wiki

X makes the first move

I created two separate code spaces to simulate two computers. Then O makes their first move:

since I haven't pushed the changes, the code space for X doesn't automatically recieve the changes:

So back in the O code space: I add the changes using git add, commit the changes using git commit, and push them using git push

--I forgot to push the changes, so it didn't work right away.

Back in the main repo the changes have been added:

now, back in the second other repo, I want to pull the changes:

I continue this cycle till the game is complete...

Tie game.

Finally, I want to go back to replay the game from a different point.

Now I've checked out the commit, so I'm working on an older version. I'm going to create a new branch from this point:

When I go to push my new (redo) move I get this error:

Can I create separate branches on github? Or do I need to push this back to the original branch?

Yes. I created a separate branch called redo using the command: git push --set-upstream origin redo

1. I don't believe there is a winning strategy to tic tac toe. The only ways I can see someone winning is if their opponent is bad, or if they convince their opponent to lose on purpose.

I believe that the best move is to take the center square because it runs through all but 4 lines. I.e. you have more options and your opponent has less. However, even if you get the center square your opponent can prevent a win.

2. I looked it up and apparently if you start in a corner AND your opponent doesn't go in the center, then you can win every time. This seems to have the same problem as the solution I proposed because you rely on your opponent not knowing they need to take the center square. This may increase the chance to win early, but after a game or two your opponent will see through it every time.

pseudo code: if (first) { pick a random number 1-4. Each number is a signed a switch case assigned to a corner (optional) --alternatively you could always pick the same corner, or cycle through an array or list

else { if (opponent takes corner) { take center square }