Serbian Frame Sudoku (Fun With Sudoku #185)

Serbian Frame Sudoku was part of the 2nd round of the World Puzzle Federation Sudoku Grand Prix 2016. This Sudoku type was a new Sudoku variation and I created this puzzle to practice for this championship. I have to give some internal digits as hints to make this Sudoku uniquely solvable. Later when the puzzle was complete then I thought that let me create one more Sudoku puzzle of this type which there is no internal digit given. I created one more puzzle of Serbian Frame Sudoku type which I will be posting soon on this website. 
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This Serbian Frame Sudoku, I am posting in Fun With Sudoku Series as 185th puzzle in this series.

Rules of Serbian Frame Sudoku

Apply Standard Classic Sudoku rules. Additionally, the clues outside the rows indicate the sum of the numbers to be placed in the 2nd and 3rd cells in the corresponding direction. The clues outside the columns indicate the sums of the numbers to be placed in the 3rd and 4th cells in the corresponding direction.

Serbian Frame Sudoku (Fun With Sudoku #185)

Serbian Frame Sudoku (Fun With Sudoku #185) Answer 

Previous Sudoku Double Diagonal Sudoku (Fun With Sudoku #184)

Next Sudoku Kropki Sudoku (Fun With Sudoku #186)

Below is the solution of the Rossini Sudoku Puzzle, published with the heading Rossini Sudoku Puzzle (Fun With Sudoku #229)

Rossini Sudoku (Fun With Sudoku #229) Puzzle Solution

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