Sudoku (Very Hard Puzzle #4)

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.

52
643
435
269
98573
7
56
714
1279

Previous Very Hard puzzle: Very Hard puzzle #3
Next Very Hard puzzle: Very Hard puzzle #5
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