1
Create. Click Create and choose one page or a full book. Pick a difficulty and the app builds the comb, the number list, and the answer key.
2
How it plays. Each dark hexagon is numbered and points along one line of cells. Every line takes one number from the list, written one digit per cell. Lines cross, so a shared cell has to suit both numbers.
3
Checked twice. Before a page prints, the app confirms only one filled comb fits the list, then confirms that comb can be reached by deduction alone. Any page needing a guess is thrown away and rebuilt.
4
Design. Use the right panel to set page size, margins, theme, spacing, borders, background, and fonts. Edit the title and instructions right on the page.
5
Export. Download a print-ready PDF, PNG images up to 4x, or a ZIP of all pages. Nothing carries any branding.