He wouldn't get any support calls because it would be very hard to get a paying customer to use a Java API like this. In particular, TakenBack.fold() isn't idiomatic Java.
In other words, he's basically defined the question so that only people who think like him can answer it. And yet, this isn't the only way to write a tic tac toe solver.
In other words, he's basically defined the question so that only people who think like him can answer it. And yet, this isn't the only way to write a tic tac toe solver.