This is the order of play that makes most sense for that outcome. X starting in the corner or in the center is pretty much the same thing (can’t lose if playing optimal moves, can only win if O plays the side). O played wrong by not taking the center.
X | |
| |
| |
X | |
O | |
| |
X | | X
O | |
| |
X | O | X
O | |
| |
X | O | X
O | X |
| |
Yes, that was my first thought. Then I saw him turn around and do it a second time.