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Is Using Notes In Sudoku Cheating? [Solved]

Hard Sudoku puzzles can prove to be impossible to solve without the visual aid provided by notes, due to the increased number of candidates per cell. It is not about cheating. It is about providing the opportunity for the brain to analyze several options and paths all at once and stimulating its cognitive development.

Sudoku Tutorial #40 A must know technique.

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Sudoku Techniques: What Is Snyder Notation?

Simon explains why it is usually so much more efficient to make certain

How NOT To Cheat At Sudoku!

Today Simon faces the puzzles that defeated him last week. Even having solved it before it’s still a completely barbaric puzzle!