Example of Split Groups
This is a version 14.0 screenshot
Split Groups:
This analysis seeks to split a larger Group into two smaller Groups. Specifically, it looks for Groups of 3 Squares or more containing two Squares with the same two possibles left. These two Squares have a known total, so can be split off to form a sub Group. For example:The five-square Group on D1, E1, F1, G1 and H1 sums to 20 and contains two Squares with just the possibles 1 and 2 left (G1 and H1). These two Squares must add to 3, so can be split off as a separate group, leaving the other 3 Squares as a Group that adds to 17.
Same example after Split Groups analysis has been applied
This is a version 14.0 screenshot
In this screenshot, the Splits Groups analysis has been applied, splitting off G1 and H1 into its own Group. This means the bottom-left and bottom-middle Boxes are now self contained apart from the square G7 whose value can easily be determined using the One Square analysis (the 45-rule).