Ask Marilyn: Numbrix Puzzles With Many Solutions

Frank Gaipa of Oakland, California, writes:

Marilyn: Is it possible to compose a Numbrix puzzle with more than one solution?

Marilyn responds:

It's easy! Anyone can do it with a little practice. But they're no challenge to solve because so many solutions exist. What's difficult is composing a puzzle with a unique solution. Doing those is what gives your brain some valuable exercise.