This is an interesting board position because both players handed victory to the other player. If the Demon had gone in the lower left (instead of whatever the second move was), then they could have forced a win. Instead, as Cameron noted, the Orc player can now win by taking the lower left square.
Hmpf. Easy win for the Orc player, place in the lower-left and if immediate victory's cut off, the upper-right. The demon player can only block one route per turn, after all.