Edge Difference Sudoku (Daily Sudoku League #58)

I wanted to create Difference Sudoku for a Sudoku project but I misunderstood instructions to end up creating this Edge Difference Sudoku.
Recently we celebrated World Sudoku Day on 9th September and my previous post titled Happy World Sudoku Day (Classic Sudoku: Fun With Sudoku #16) was to celebrate this Sudoku Day. 
Now 1st episode of Sudoku Mahabharat is going to start on 20th September, 2014. The Mahabharata is one of the most widely read Sanskrit epics in India. The Mahabharata is a wonderful epic with many heroic characters, dramatic incidents and popular legends. Its very interesting to understand the circumstances in Mahabharata, which forced characters of Mahabharata to take certain decisions. It was very interesting to analyze and learn from the consequences of these decisions. Mahabharata is wonderful epic for reading. One interesting thing in Mahabharata I found that even though it happened thousands of years back, but it is contains knowledge of all modern war weapons from Fire to Forget Missiles to Atomic Bombs and may be weapons to be developed in coming time. Highly recommended read indeed.
This Edge Difference Sudoku is my 58th contribution for The League of Extraordinary Ladies and Gentlemen.
Rules of Edge Difference Sudoku
Classic Sudoku Rules apply. Additionally numbers given outside the grid shows the differences between first and last digit in corresponding row or column.
Edge Difference Sudoku (Daily Sudoku League #58)
Edge Difference Sudoku (Daily Sudoku League #58)
Classic Sudoku  (Fun With Sudoku #16) Solution
Classic Sudoku  (Fun With Sudoku #16) Solution

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