Logic Masters Deutschland e.V.

Grouping Everyone

Hello! This is the second of my Grouping puzzles, with the first one being Grouping All but One, but now with new rules for constructing the groups. Plus, this time r9c7 gets to join in on the fun of being in one of the groups! I hope you enjoy!

Rules:

• Normal sudoku rules apply.


• Divide all cells in the grid into groups of orthogonally connected cells. Every group contains exactly one cell with a circle. The digit in a circle appears that many times in circles (e.g. if 4 was found to be one of the digits in a circle, then exactly four circles would contain a 4).


• The digit in a circle cell, N, indicates the number of cells in that group. If a group does not cross through any of the standard 3x3 box borders, the sum of the digits within the group is N^2. If a group does cross at least one box border, the sum of the digits within the group is N^2 - 1. Digits may repeat within a group if allowed by normal sudoku rules.


• For example, if a 4 was in a circle, it would be in a group of four orthogonally connected cells that add to either 16 (if the group stays fully inside one of the 3x3 boxes) or 15 (if the group crosses at least one of the 3x3 box borders).


• Cells separated by a white dot are consecutive and are in different groups. Not all dots are necessarily given.

SudokuPad link