Insane Killer Sudoku

Ok, a few regular readers have requested an INSANE Killer Sudoku puzzle so I had to respond. This puzzle should be very difficult to solve. In fact, it might require some trial&error attempts …

Killer Sudoku Puzzles by Krazydad

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Insane Sudoku Puzzles, Book 41 - KrazyDad

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The June newsletter – INSANE Killer Sudoku puzzle

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Sudoku Insane & Inhuman: Killer Sudoku Puzzles for Advanced & Experienced Players Extremely Hard to Hardest for Experts by Puzzle Press, Paperback

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Killer Sudoku, Puzzle Game

1000 Insane 5x5 Killer Sudoku Puzzle Bundle Graphic by KDP Hero · Creative Fabrica