Chapter 2. Solving Techniques

Table of Contents

Single number techniques
Lone single
Hidden Single
Intersection with block
X wing
Multiple number techniques
Unique Rectangle
Sudoku collection
Not yet solved

Most sudokus can be solved using the very basic techniques as lone singles and hidden singles. The difficult part is finding hidden singles. Setting pencil marks helps here.

The more advance techniques are unfortunately rarely required. has just the basic techniques implemented and therefore might not be able to solve all sudokus. The sodokus not being able to solve are therefore the interesting ones that are worth to study.

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