Pattern is one of Simon Tatham's portable puzzles, the kind often called a nonogram. The numbers beside each row and above each column give the lengths of the runs of black squares in that line, in order, with at least one white square between runs.
From those clues alone you work out which squares are black. Every puzzle is generated fresh, in several sizes, and can be solved by logic without guessing.
Controls
Left-click or tap a square to fill it; right-click to mark it as empty. Drag to fill or mark several in a row. The menu bar has New game,…
Genre
Puzzle, Logic, Picture, Desktop
Price
Free — no account, no download, nothing to install
Tips for Pattern
Start with the big numbers: a run longer than half the line always covers its middle squares.
Mark squares you know are empty; they split lines into smaller pieces.
Lines with a sum of clues close to the line length are almost solved already.