A group of contiguous (filled) cells.
The minimum number of cells required to accomodate the blocks (with one empty space between each).
Smallest square in the grid. Can either be coloured as filled, empty or unknown
The set of numbers that indicate the pattern of filled cells in a row/column (see 01. How to Play Gnonograms)
How much room for manoeuvre there is in a row/column. The difference between the total number of cells in the row/column and the block extent.
A row or column or a length of contiguous cells within a row or column
The region within which the block must be placed
The rectangular array of cells that holds the solution to the puzzle or on which you can draw your own puzzle
The rectangular array of cells that holds your working when trying to solve a puzzle
A grid of lines outlining the borders of the cells