New feature: If the user closes the application and there are unsaved changes in the current problem, the user is now asked if she wants to save the problem.
Corrected Bug: The solving time was not displayed in case of the "Auto Check"-option was selected. This has been fixed.
New feature: The number of problems for booklet out of existing problems can now be set.
New feature: The time used for solving a problem interactively is now been displayed.
New feature: Some changes regarding options. In addition the setting of the options "Track", "Find all Solutions", and "Auto Check" are now saved when closing the program.
New feature: The calculation of the severity level has changed. In most cases the resulting level is the same as before, however in some times the new level better reflects the "real" severity (if there is a such a thing like a "real" severity).
New feature: Performance enhancements in particular when creating a booklet from stored problems.
New feature: The calculation of valid values for a cell now also identifies "Naked Pairs".