Question 1

What is a nonogram?

Accepted Answer

A logic puzzle where the numbers beside each row and column tell you the runs of filled squares in that line. Solving it reveals a picture. They're also known as griddlers or paint-by-numbers logic puzzles.

Question 2

Is there only one answer?

Accepted Answer

Yes. Every Suvi nonogram has exactly one solution, and our solver checks that it can be reached one line at a time without guessing, before the puzzle goes live.

Question 3

What happens if I fill a wrong square?

Accepted Answer

With mistakes shown (the setting is on unless you turn it off), a square that should be empty is marked with a ✕ for you and counted as a mistake, and you carry on. Turn it off in the settings if you'd rather check your own work: a line that can't match its numbers then shows them in red.

Question 4

Is it free?

Accepted Answer

Yes. Today's three puzzles are free every day, with a few extra puzzles to practice on. While Suvi is new, every past puzzle is open to everyone too.

Question 5

Can I play on a phone?

Accepted Answer

Yes, it's built for phones first. The 5×5 and 10×10 have big squares; on the 15×15, dragging along a row is the easiest way to fill a run. It works with a mouse and keyboard too.

Nonogram: Tuesday, October 20, 2026

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