How to play nonograms
A nonogram is a picture logic puzzle, also called picross, griddlers or hanjie. Numbers around a grid tell you which cells to fill, and when you are done a pixel-art picture appears. You never need to guess.
The rules
- Each number beside a row, or above a column, is a run of filled cells in that line.
- The runs come in the order of the numbers: left to right in a row, top to bottom in a column.
- Between two runs there is at least one empty cell.
- A 0 means the whole line stays empty.
An example
| 2 | 4 | 4 | 4 | 2 | |
|---|---|---|---|---|---|
| 1 1 | |||||
| 5 | |||||
| 5 | |||||
| 3 | |||||
| 1 |
The second and third rows say 5: in a row of five cells, all five are filled. The top row says 1 1: one filled cell, a gap, then another. The columns check the result: the middle column says 4, a run of four cells from the second row down.
Tips for solving
- Start with the lines that are full or empty: a 5 in a row of 5, or a 0.
- Look for overlap. A run of 7 in a row of 10 always covers the middle cells 4 to 7, wherever it starts, so fill those first.
- Mark cells you know are empty with ✕. Empty cells are clues too.
- When a line is complete, cross out the rest of it. In Sumigrid, Auto-X does this for you.
- Switch between rows and columns: every cell you settle in one helps the other.
- Every Sumigrid puzzle can be solved with logic alone, so if you are stuck, look for a line you have not checked.
Playing Sumigrid
- A new daily puzzle every day at midnight UTC, the same for everyone. Keep your streak going.
- Three hearts per puzzle: a wrong mark costs one.
- Stuck? 💡 reveals a cell you could work out next, without costing a heart.
- Share your result as an emoji grid that gives nothing away.
Sumigrid is coming to Android with hundreds of puzzles and theme packs. Become a tester.