KILLER SUDOKU RULES

The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called 'boxes', 'blocks', or 'regions') contains all of the digits from 1 to 9. On the top of each group You can see sum of the group. The group can has the same digits. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a unique solution.