[carefulfungi]

I am unfamiliar with nonograms. I don't understand from the explanation how the grouping hints work.

"When there are two or more numbers, this means there will be two or more groups of filled cells."

Is the "group number" the size of the first group? That seems to fit the tutorial example where (1, 2) = (., x, ., .) and (2, 1) = (., ., x, .).

Thanks for making this - I've stumbled across these puzzles but never took the time to try one.

[merelysounds]

Yes, that’s exactly how it works.

Each number specifies the size of the corresponding group. E.g. numbers “5 4 7” would mean: “three groups of filled cells, first group will consist of 5 cells, second will consist of 4 cells, third group will consist of 7 cells”.

Have fun and I’m happy to hear that this is useful!