Example: Consider the following Sudoku grid: +-------+-------+-------+ | 1 | 3 4 5 | 6 7 8 | | 2 5 6 | 7 8 9 | 1 3 4 | | 3 4 7 | 1 2 5 | 8 9 6 | +-------+-------+-------+ | 4 6 8 | 9 1 2 | 3 5 7 | | 5 7 9 | 2 3 4 | 6 8 1 | | 6 8 1 | 4 5 7 | 2 9 3 | +-------+-------+-------+ In this grid, we can apply the XY-Wing strategy to eliminate the number 4 from the third row, third column, and third box. sudoku combinations
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sudoku combinations 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. very difficult sudoku 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. very difficult sudoku Modern Sudoku was popularized by Nikoli in Japan in the 1980s. It has since become a global phenomenon, with daily puzzles appearing in newspapers and online platforms worldwide.
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