GridMewFrom screenshot to next step.
Import an image, align the board, check every region and mark, then solve.
- 1. Choose image
- 2. Align
- 3. Correct
- 4. Solve
Choose a screenshot
PNG, JPEG or WebP · Up to 10 MiB and 20 million decoded pixels.
Processed on your device. Images are not uploaded. Automatic prefill reads regions; add existing cats and × marks yourself.
Align the board
Move and resize the rectangle so its edges match the outer grid. Use a straight, upright board. Rotate if needed.
Choose a region and click cells to paint. Arrow keys move focus, Space uses the selected tool, X marks a cell. Each region must be connected.
What the solver can tell you
It distinguishes an invalid board, no solution, more than one solution, a unique solution, and a search that has not finished. A unique answer stays hidden until you choose to reveal it. A hint is offered only when a supported logical rule explains a step.
Screenshot support
Best results come from upright, evenly spaced square grids with flat, visibly different region colors. Choose the grid size, crop tightly to the board and check the prefilled regions. Similar colors, heavy markings, shadows or missing edges can confuse sampling. Edit regions and marks manually before solving. No particular third-party app or screenshot style is guaranteed.