Smashed Sums Sudoku

Rules: Place a digit from 1-7, or blacken in each cell such that each digit appears exactly once in each row, column and marked 3×3 box. There will be 2 blackened cells in each row, column and 3×3 box. Numbers outside the grid indicate the total of cells between the blackened cells in the corresponding direction.

Background: This is one of my design. Actually, it is Smashed Sums + Sudoku.

Example:

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One Response to Smashed Sums Sudoku

  1. Sai Karthik says:

    Sir,
    Its really difficult to crack this type of Sudoku.Can you please tell me some tips on how to do it.I am really interested in this type of Sudoku.
    Thank You.

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