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samurai sudoku book Jellyfish: This technique is similar to the Swordfish and involves identifying pairs of numbers that appear only twice in three rows or columns. usatoday puzzles sudoku C - The number must not appear in the same row, column, and 3x3 subgrid as another number with the same letter.
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samurai sudoku book Sudoku competitions are held globally, where speed solvers compete to finish complex grids in the shortest time possible. sudoku washington post Advanced Sudoku solving methods involve complex patterns like X-Wing, Swordfish, and XY-Wing. These techniques are often required for hard and expert level puzzles. sudoku washington post Sudoku competitions are held globally, where speed solvers compete to finish complex grids in the shortest time possible.
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