Color Block Jam Undo or Restart: Which Recovery Is Better?

When is undo enough?

Undo one move when you can name the exact consequence: a key was used too early, a lane closed, or a temporary stopper changed state. Then choose a different move that tests the same dependency.

When is a restart clearer?

Restart after a chain of uncertain moves. A clean board lets you compare the opening layout with a guide and preserves a useful record of the first failed assumption.

Does a lower move count prove the recovery worked?

No. A route is better when it preserves access and reaches a confirmed checkpoint. Treat the count as secondary to a stable, repeatable sequence.