Mobile phone Nine Sudoku unlock the maximum number of patterns?

First of all, it is certain that the mobile phone nine Sudoku Unlock the pattern also has certain rules, specifically:

1. At least four points;

2. Cannot repeat through the same point;

3. The points in the middle of the path cannot be skipped (for example, from 1 to 3 must pass through 2) unless the middle point is used.

The cattle on the internet wrote a section of code for this operation, taking into account the above operating rules, the final answer to the 389112, has been universally recognized. Of course, for Android devices, the 6-point pattern security is strong enough, as to whether the need to use the fingers to cramp, to draw a very complex pattern, completely depends on a person's preferences and ability.