New feature: The constrast of the "X" in the printout of X-Sudokus wasn't (at least for several printers) bright enough. Therefore, a new option has been introduced to adjust the constrast of the "X" in the printout of X-Sudokus.
Corrected Bug: The build date in the About-Box wasn't correct. This has been fixed.
Version 3.5.1.0
New Feature: Cells which contain an invalid value are marked with a red exclamation mark and an appropriate error message.
Corrected Bug: If the user enters an invalid value in a cell and then clicks into another cell, the application crashed. This has been fixed.
Version 3.5.0.0
New Feature: A new option, which defines whether or not the severity level of new generated problems can be selected.
New Feature: It is now possible to enter values in cells using the mouse wheel.
Version 3.4.2.0
New Feature: Enhanced calculation of possible values for the diagonals for X-Sudokus.
Version 3.4.1.0
Corrected Bug: Saving a Sudoku problem didn't correctly store the type of problem. This has been fixed.
