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Introduction to Sudoku

Solving Techniques

Singles

Full House

Direct Naked Single

Direct Hidden Single

Indirect Naked Single

Indirect Hidden Single

Subsets

Naked Pair

Hidden Pair

Naked Triple

Hidden Triple

Naked Quad

Hidden Quad

Intersection

Locked Candidates

Basic Fish

X-Wing (Size-2 Fish)

Swordfish (Size-3 Fish)

Jellyfish (Size-4 Fish)

References

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