caught in a difficult situation where both advancing and retreating are equally problematic; trapped with no way out.

In an impossible situation with no room to advance or retreat; caught in a predicament where every option is difficult.

caught in a difficult situation or stalemate with no room for maneuver

not knowing when to come or leave; lacking a sense of propriety

to be in a hopeless situation or unable to determine a course of action

to have no alternative; to be at a dead end

to be in a difficult situation with no room to advance or retreat; trapped in an impossible choice or position

to advance or retreat, each has its rules

To advance or retreat in accordance with rules; every movement follows established norms (idiom from Zhuangzi).

free to move forward and backward or come and go without hindrance