Monday, 27 June 2022

Sudoku no 664 (Diabolical)

I created this puzzle just now. I was trying to create an extreme one but, after 75 attempts I had not found what I was looking for so I chose this one instead. It has a Hodoku grade of Hard (1508) so it is typical of the puzzles in my book, which all have a Hodoku grade between Hard (1000) and Hard (1999).

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