candidate elimination — 31 posts
Learn how hidden pairs Sudoku works, how to spot the pattern, and how to clean up candidates without guessing.
Read article →Learn how to solve Sudoku without guessing using scanning, pencil marks, hidden singles, and simple logic patterns that actually work.
Read article →Learn the Sudoku terms every beginner should know, including candidates, singles, pencil marks, and what r1c1 means in Sudoku.
Read article →Hidden pair Sudoku is an intermediate technique where two digits can only fit in the same two cells of a row, column, or box. Here is…
Read article →A clear guide to pointing pairs Sudoku, including the box-to-line logic, a simple example, common mistakes, and when to use the technique in real puzzles.
Read article →A clear hidden triple Sudoku guide for intermediate solvers who want to spot the pattern, clean candidates correctly, and reopen stalled 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 →Learn the main Sudoku solving methods in the right order, from singles and scans to pairs, intersections, and advanced patterns.
Read article →Learn the most important Sudoku terms, from candidates and pencil marks to hidden singles and locked candidates, with beginner-friendly explanations.
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