🚀 go-pugleaf

Generally, in the game of boxes, there are a certain number of moves that
don't create a 3, which the players can safely take turns making until one of
them is forced to make a 3 that the other player can score points from.  If
there's an odd number of these at the beginning of your turn, you're in good
shape - an even number, and you're not.  But some of these moves will render
some of the other previously safe moves unsafe.  You could have your program
take a move that renders an odd number of other moves unsafe if it detects an
even number of safe moves remaining, and preserve the status quo otherwise.
Also, when forced to give away boxes, you should analyze all the moves to
find the one that gives the opponent the least number of scorable boxes,
which shouldn't be too hard to figure out.