A 20x20 maze grid, sized for teens and adults who want a real challenge. Every maze is a unique recursive-backtracking maze with exactly one solution path.
This preset locks the grid to 20x20 cells, which is the size recommended for teens and adults who want a real challenge (teens/adults). Each maze is generated fresh with a recursive backtracking algorithm — every cell is reachable and there is exactly one path from the top-left start to the bottom-right end. Solve it on screen or download a print-ready PDF with an optional solution page.