Techniques
The deductions that solve a puzzle — naked single, hidden single, X-wing, the killer-Sudoku 45 rule, and the rest. The solver replay deep-links into these entries when it walks through a step.
20 entries
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Short reference entries for the techniques, rules, and terminology of Sudoku. The long-form companion pieces live in Learn.
Categories
Rules & terminology
The vocabulary of the grid — candidate, pencil mark, given, cage, unit. The structural pieces every technique builds on top of.
5 entries
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