Sudoku (Medium-Difficulty Puzzle #12)

Difficulty: * * *   (explanation of difficulty)

Instructions: Fill each square with a number between 1 and 9, such that each row, each column, and each 3×3 box contains each digit between 1 and 9 exactly once. There is only one way to complete the puzzle correctly.

For immediate feedback as to whether your entries are correct, select "Yes" for "Provide immediate feedback for wrong answers". Select the "Check Solution" button when done.

72
215
867
3614
53
7945
159
813
74

Previous Medium-Difficulty puzzle: Medium-Difficulty puzzle #11
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