Open tessera An open tessera is a line of four stones in any direction without any of the opponent's stones on either side. If the open tessera isn't cut across with certain captures that dismantle it, it can't be stopped from forming a pente and winning the game for the player who formed it. The reason for this is that if an opponent tries to place a stone on either of the sides, the attacking player can simply place a stone at the opposite end and form a pente.
Open tessera An open tessera is a line of four .stones in any direction without any of the opponent's stones on either side. :If the open tessera isn't cut across with certain captures that dismantle it, it can't be stopped from forming a pente and winning the game for the player who formed it. The reason for this is that if an opponent tries to place a stone on either of the sides, the attacking player can simply place a stone at the opposite end and form a pente.