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Ask Marilyn: How Does Marilyn Know Numbrix Solutions Are Unique?
Adennis Waddell of Talbott, Tennessee, writes:
Marilyn: Is there always a unique solution to Numbrix puzzles, and if so, how do you know?
I try to create only puzzles with unique solutions, and I check each one by hand afterward. (I like the mental exercise.) So if you find a puzzle with another solution, I goofed on that one.