Nonopix

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Nonograms, also known as hanji, Paint by Numbers, or Griddlers are logic puzzles image in which cells in a network has to be black according to figures from the network side to reveal a picture hidden.

The rules are simple.

You have a grid of boxes to be painted black or marked with an X. Next to each row in the grid are long chains of cells in black for that row. On each column in the grid are long chains of cells in black for that column. Your goal is to find all the black squares.

In this type of puzzle, the numbers measure the amount of solid lines filled in the boxes are in any row or column. For example, a hint of "4 8 3" would mean that groups of four, eight and three boxes full of black, in that order, with at least one blank square between successive groups.