Logic Masters Deutschland e.V.

Grouping All but Three

Rules:

• Normal sudoku rules apply.


• Divide all cells in the grid except for r9c7, r9c8, and r9c9 (the grey cells) into groups of orthogonally connected cells. Every group contains exactly one cell with a white circle. The digit in a circle cell, N, indicates the number of cells in that group. The digits in each group must sum to 5 x N. Digits may repeat within a group if allowed by normal Sudoku rules. r9c7, r9c8, and r9c9 are not in any of the groups but are still affected by normal Sudoku rules.


• As an example, a circle cell containing a 4 is in a group of 4 orthogonally connected cells that sum to 20.


• Digits separated by a white dot are consecutive. Digits separated by a black dot are in a 1:2 ratio (i.e. one is double the other). Cells separated by either type of dot are in different groups.

SudokuPad link

Enjoy!

This is the fourth of my "Grouping" puzzles. You can find the others here:

• Grouping All but One
• Grouping Everyone
• Grouping All but Two