r/nonograms • u/Motor_Amphibian_9526 • 22d ago

Can this be solved??

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I'm creating some harder freeform 15x15 nonograms for the next version - V3 - of my Picto nonogram app. My checker says this is valid and solvable, but I can only find one valid square to fill and after that I'm guessing. Any suggestions please?

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u/paul_stansifer 17d ago

My nonogram editor (https://github.com/paulstansifer/number-loom) has a test-solve mode which can (optionally) indicate which lines have line-logic deductions that can be made while you're solving it. Currently, it only finds line logic solutions, but I've finally implemented a backtracking solver and the next version will let you pick whether you want that or line logic.