Group Sum Sudoku

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns and the nine outlined 3x3 regions.

Each number at the intersection of four cells is the sum of digits in those four cells.

Sudokus that no one can solve

Sudokus that no one can solve, not only including Sodukus which is very difficult but also that no one trying to solve it.

17-January-2021

23-January-2021

27-January-2021

28-January-2021

31-January-2021

3-February-2021

4-February-2021

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Group Sum Sudoku

Sudokus that no one can solve