Free Daily Sudoku: Scattered Group Sum Sudoku 9×9 (0035)

“Scattered Group Sum Sudoku 9×9” Puzzle Rules:

Fill the grid with the numbers 1–9 so that each number appears exactly once in every row, column, and scattered region (irregular regions that replace standard 3×3 boxes).
Each circled clue shows the sum of the digits in the four cells covered by that circle.

Solution of this Scattered Group Sum Sudoku 9×9 can be viewed by clicking on button. Please do give your best try to solve this Sudoku puzzle before looking at the answer.

Link to solve it online: Penpa+