49 posts in this category
Candidate lines Sudoku is a clean box-to-line technique that removes candidates without guessing. Learn how it works, when to use it, and how it differs from…
Read article →Learn what Sudoku pattern recognition really means, which patterns to spot first, and how to train your eyes to find logical structures faster.
Read article →Learn how to use notes in Sudoku so you can track candidates, spot singles, and solve puzzles without guessing.
Read article →A practical guide to the Sudoku contradiction technique, including when to use it, how to test a branch cleanly, and how it differs from guessing.
Read article →A clear guide to locked candidates type 1 vs type 2 in Sudoku, including how pointing and claiming differ and when to use each pattern.
Read article →A practical troubleshooting guide for Sudoku players who understand hidden singles in theory but keep overlooking them during real puzzles.
Read article →Learn the last possible number in Sudoku, how it differs from hidden singles, and how to spot this easy forced move faster.
Read article →A clear guide to claiming Sudoku, including how the line-to-box elimination works, how it differs from pointing, and when to scan for it in real puzzles.
Read article →Learn how to eliminate candidates in Sudoku using notes, singles, locked candidates, and pairs so you can solve logically without guessing.
Read article →A clear guide to intersection removal Sudoku, including how the overlap between a box and a line creates eliminations through pointing and claiming.
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