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Sudoku Expert Tips

Strategies to play smarter and score higher

Master candidate notation; expert puzzles are impossible without it.
Look for rows or columns where a candidate appears only twice—potential X-Wing setups.
Study Swordfish and Jellyfish patterns for multi-row eliminations.
Use uniqueness tests only on puzzles guaranteed to have one solution.
When stuck, step away for a few minutes; fresh eyes spot hidden patterns.
Practice one advanced technique at a time until it feels automatic.

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Difficultyhard