Saturday 3 June 2017

Solution to Sudoku no 109

Here is my original version of the solution:


I published this puzzle on the Intranet where I work. A couple of days later, a Sudoku enthusiast from France sent me the solution below:


The next solution came from Solving Sudoku, a member of my Sudoku Puzzles group on Facebook:

Sudoku no 109 (Diabolical)

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Sudoku grader and solver

See the answer