Nonograms are picture logic puzzles in which cells in a grid must be filled or left blank according to numbers at the side of the grid to reveal a hidden picture.

The numbers show how many consecutive filled squares there are in each row and column. For example, a clue of '4 2' means there is a group of four filled squares, followed by one or more empty spaces, and then a group of two filled squares.

Use FILL (⬛) to mark squares you know are part of the picture. Use CROSS (✕) to mark squares that must be empty.