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Printable 15 × 15 nonograms

The grid contains 225 cells in 15 rows and 15 columns. A single run of 10 in an empty line of 15 must cover the 5 central cells shared by its leftmost and rightmost positions.

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The grid contains 225 cells in 15 rows and 15 columns. A single run of 10 in an empty line of 15 must cover the 5 central cells shared by its leftmost and rightmost positions. Fill those cells even while the endpoints remain unresolved.

What to check

Alternate between row and column clues. Size determines the number of cells, while difficulty also depends on the clue arrangement. Cross out confirmed empty cells and keep unresolved cells visibly distinct.

Separate empty from unknown

Mark cells you know are empty with a cross and leave unresolved cells unmarked. Progress in a row supplies information for its columns. At the end, count the actual runs in every line and compare them with all its clues.