Mod X is a twist on the familiar n-in-a-row game. In
this case n=5, and the "5" patterns are five-in-a-line,
five-in-an-X and five-in-a-+. In addition to the
multiple shapes, there are neutral "joker" pieces that can
be used to complete any shape. Finally, making a
scoring shape scores a point, but that point can be
un-scored if the other player makes another scoring shape
that uses it.
There are a few subtle points in the official
rules about the placement of the joker pieces.
Robots: the preliminary report is that the bot is