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1:18
YouTube
Sudoku.com
Swordfish - an Advanced Sudoku technique
In this video you'll learn how to use the Swordfish strategy in a Sudoku game. The "Swordfish" technique is an advanced Sudoku strategy. It's usually applied in harder levels of Sudoku puzzles to eliminate candidates. "Swordfish" is similar to X-wing but uses three sets of cells instead of two. So, it's a little more complicated than X-wing ...
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