Doorway Duel

HERE’S
THE IDEA.

You are mint, racing from the bottom row to the top; the computer races the other way. On your turn either step to an orthogonal neighbour or close one single edge with a gate. Each side has four gates. A gate is legal only if both spirits still have some route to their goal row. Spirits may share a square. First to the opposite edge wins.

Pause, restart and adjust effects inside the player. Automatic previews never save results. Your progress shows its save status while you play.