Killer Combinations Tool
This is a version 14.0 screenshot
Killer Combinations Tool:
This tool is turned on and off with the
button in the toolstrip.
The tool opens a panel at the bottom-right of the SuDoku Solver and a provides a list of all possible combinations for the Killer Group that the mouse is hovering over.In addition, it indicates if there are any Required Digits in that Group (numbers that appear in every combination).
In this example, the mouse is hovering over C4 and highlighting the Killer Group that contains it. This Group has four Squares and a total of 12. So there are just two possible combinations, 1236 and 1245. Since 1 and 2 are in both combinations, these are Required Digits and must appear somewhere in the Group. Required Digits are shown using a bold red font and may be transferred to the Grid using the right mouse button.