Frame Sudoku Puzzle (Fun With Sudoku #397)

In the last few weeks, I have not created any new Sudoku puzzles. However, there are many unpublished puzzles created long back in my notebooks. So nowadays I am trying to post these puzzles. There were two Frame Sudoku puzzles that I created for Asian Sudoku Championship 2018. One Frame Sudoku got selected to be included in this Sudoku Competition. However, this is another Frame Sudoku that could not make it to this Sudoku Competition. This Frame Sudoku, I am publishing as part of the Fun With Sudoku Series as the 397th Sudoku Puzzle in this Series.

Rules of Frame Sudoku Puzzle

Standard Sudoku Rules apply. Additionally numbers outside the grid equal the sum of the digits appearing in the cells in the first box (till the next bold line) seen from that edge of the grid.

Frame Sudoku Puzzle (Fun With Sudoku #397)

The answer to this Frame Sudoku puzzle can be viewed by clicking on the button. Please try your best to solve this Sudoku puzzle before looking at the answer.

Frame Sudoku Puzzle (Fun With Sudoku #397) Answer

This Frame Sudoku Sudoku Puzzle I am publishing as the #397th Sudoku puzzle in the Fun With Sudoku Series. Here are the next and previous Sudoku puzzles published in this Sudoku Series.

The previous Sudoku Puzzle is Quadro Sudoku Puzzles (Fun With Sudoku #395, #396)

The next Sudoku Puzzle is Anti-Diagonal Sudoku (Fun With Sudoku #1)