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Select a Puzzle Source : Choose a source that meets your preferences, whether it's a website, app, or software program. scientific american sudokunewsday sudoku Swordfish Strategy Similar to the X-Wing strategy, the Swordfish technique is used when there are four or more identical numbers in two intersecting rows or columns. Look for pairs, triples, or quadruples of numbers that can only go in one place within a row, column, or box. sudoku 16 16
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When three cells in a row or column have the same three numbers, and these numbers are not present in any other cells of the same rows or columns, it is a Swordfish. scientific american sudoku6 by 6 sudoku Focus on solving the most challenging parts of the puzzle first, and avoid getting stuck on a single cell for too long. ny times medium sudoku These tools can help you save time, improve your skills, and challenge yourself with different levels of difficulty. Keep an eye on the grid: As you progress, pay attention to the Y-Wing patterns and their impact on the puzzle. 6 by 6 sudoku
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