Basic Sudoku techniques
Sudoku technique hub
Sudoku Techniques
Plain-English guides for every SudoSketch solving method, from singles and pairs to wings, fish, colouring, chains and ALS logic.
How to use these guides
Start with the easier techniques first. Sudoku solving is usually a ladder: singles, locked candidates, pairs, triples, fish, wings, colouring and then chains.
Each page gives the idea in plain English, explains when to look for the technique, and points out the common mistake to avoid.
All technique guides
Locked candidate techniques
Locked candidate techniques
Subset techniques
Subset techniques
Fish techniques
Fish techniques
Wing techniques
Wing techniques
Single-digit chain techniques
Single-digit chain techniques
Visual chain techniques
Visual chain techniques
Chain techniques
Chain techniques
ALS techniques