[Houshalter]

After that it's pretty easy to force a win. Whatever square they send you to, you just send them back to one of those two squares.

[3pt14159]

I challenge you to a game where you are X then. Because I can't figure out how you force a win like that.

[3pt14159]

I take it back. The key is to line up three master blocks with x's free move. Then the game is perfectly won by x.

[Houshalter]

I'm not entirely sure how to do it anymore, but playing with the perfect AI posted somewhere else in this threat convinces me it's impossible to win if you don't start first.