Step 1: Look for Easy Pairs and Triples Start by scanning the grid for pairs or triples of numbers that are already in the same row, column, or region. leetcode sudoku solver
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leetcode sudoku solver Step 5: Look for Hidden Pairs and Quadruples Hidden pairs and quadruples are similar to naked pairs and triples but occur in a more complex manner. Unique Rectangle and Pointing Pair: These techniques are similar to X-Wing and Swordfish but involve identifying patterns in boxes rather than rows or columns. how to pronounce sudoku
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