Thursday, May 31, 2018

Row Sum-Extra Region Sudoku Puzzle (Daily Sudoku League #223)

Coming weekend is next round of Sudoku Mahabharat 2018. It is themed on Irregular and Hybrid Sudoku puzzles. One of the Hybrid Sudoku contains combination of Row Sum Sudoku and Extra Region Sudoku. Row Sum Sudoku was my idea which I published in long back in year 2014. My first Row Sum Sudoku was published with title "Row Sum Sudoku (Daily Sudoku League #19)". This idea was extension of my another idea called Box Sum Sudoku. Later based on same idea "Line Sum Sudoku" was created.  One of these ideas were even used in recent World Sudoku Championship 2017Anyway this Hybrid Sudoku contains both Row Sum Sudoku and Extra Region Sudoku is very interesting Sudoku variation.  I am publishing this Row Sum-Extra Region Sudoku in Daily Sudoku League as 223rd Sudoku Puzzle in this Series.

Rules of Row Sum-Extra Region Sudoku Puzzle

Standard Sudoku Rules apply. In addition Row Sum Sudoku and Extra Region Sudoku rules apply. 

Row Sum Sudoku Rules

For each of the Row, one marked cell contains number which is sum of all other remaining marked cells in the row.

Extra Region Sudoku Rules

Each extra region must contain digits from 1-9. The extra regions are of 9 cells each and are shaded in the grid.

Row Sum-Extra Region Sudoku Puzzle (Daily Sudoku League #223)
Row Sum-Extra Region Sudoku Puzzle (Daily Sudoku League #223)
Answer of this Row Sum-Extra Region Sudoku puzzle can be viewed by clicking on button. Please do give your best try to solve this Sudoku puzzle before looking at the answer.

This Row Sum-Extra Region Sudoku Puzzle I am publishing as #223rd Sudoku puzzle in The League of Extraordinary Ladies & Gentlemen. Here are the next and previous Sudoku puzzles published in this Sudoku series.

14 comments:

  1. 10m....your constructions are really becoming very nice..i am just loving them

    ReplyDelete
  2. Finished in apex 15 minutes
    Enjoyed solving this new variant

    ReplyDelete
    Replies
    1. Solving this Sudoku puzzle in 15 mins is great time.

      Delete
  3. Enjoyed the Sudoku
    Finished in 15 mins
    Challenging one :)

    ReplyDelete
    Replies
    1. Thanks Pranav,
      Yes, this was challenging Sudoku. Trying solving it again. I am sure now you can finish this Sudoku in less than 5 mins.

      Delete
  4. Messed this one up badly for some reason.After slogging for more than 30 mins,sadly I broke it...

    ReplyDelete
    Replies
    1. Kishore, try it again. I am sure that you can crash this Sudoku puzzle in less than 5 mins.

      Delete
  5. Took 19:17 to solve this. It was a difficult one. But really a nice solve.

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    Replies
    1. Great Hemant. Now a days I am solving Sudoku puzzles created by you :)

      Delete
  6. Tough but interesting .. Loved solving it

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    Replies
    1. Thanks Ramesh for solving this Sudoku and posting your comments.

      Delete

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