Zip solver

Only here Checks the path you have drawn so far, takes you back to the last point that can still be finished, and reveals only the next stretch to the next number.

For LinkedIn Zip and any puzzle where one path starts on 1, passes the numbers in order, fills every square once and never crosses a wall.

Tap squares in order to number them 1, 2, 3…; tap a number to remove it.

How it works

The solver walks every possible path from 1, trying the most boxed-in square first, and abandons a path as soon as it cuts off part of the board or leaves a square with only one way in. That makes even 10×10 boards quick, and it also tells you whether only one path fits.

Draw as much of your own path as you like. "Hint" checks it first: if it can no longer be finished, it takes you back to the last point that still works. Otherwise it adds the next stretch, up to the next number, so you keep solving the rest yourself.

You enter the boards yourself; Grind Toolkit doesn't copy anyone's puzzles. Not affiliated with LinkedIn.