There are some ways to deal with the mirroring flaw. The following assume odd-sized square boards. In one, the 1st player is forbidden from starting in the cen

There are some ways to deal with the mirroring flaw. The following assume odd-sized square boards. In one, the 1st player is forbidden from starting in the center. The other gives the 2nd player the option of switching sides after the first stone is played.