#2 The app occasionally crashes in unsolvable boards

[Roger Bucks]

The application can be given "hard" unsolvable boards
to solve that the current (basic) rules take a long
time to fail on.
This appears as though the app has hung on anything
less than a 1THz computer.
An example is posted.

[Roger Bucks]

[Roger Bucks]

Logged In: YES
user_id=1443694

Adding a slice & dice rule will help solve these
imponderables.