Squeeze, cut the rope line, win.

Caravans Garden is a 3D strategy game of tents, ropes and Keeps. Every tent must stay roped to its Keep; cut the enemy’s rope line and everything beyond the cut collapses. There is a one-minute tutorial, you can play a friend with a code or play rated games online, and you can review a game move by move afterwards. It needs WebGL. Play it and tell us your best opening.