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What Is The Swordfish Technique In Sudoku? [Solved]
A Swordfish is a 3 by 3 nine-cell pattern where a candidate is found on three different rows (or three columns) and they line up in the opposite direction. Eventually we will fix three candidates somewhere in those cells which excludes all other candidates in those units.
Sudoku 101: The Swordfish
Simon takes a look at a difficult puzzle and discusses how it could be approached using the "
Sudoku. Lesson 23. Review. The swordfish pattern
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Lesson #11: The Sudoku Swordfish: An X Wing Variant with a 3x3 Rectangle
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