Top Ten (medium)
The aim of this maze is to start at the top left-hand corner, with the value zero, and reach the bottom right-hand corner with the value 10.
This maze has the added restriction is that you must leave a square along a different path from the one you used to enter it.
For example, from the starting square you could move right to the "-1" square, or down to the "+2" square. From the "-1" square you could move down to the "+1" square below it, giving you a total of 0, or you could move right to the "x2" square, giving a total of -2, but you cannot immediately move back to the starting square.
To solve this maze you'll need to use a pencil and paper; you can't solve it interactively.