Sudoku Techniques List
The hint system on Sudoku Dojo automatically detects the following 7 solving techniques. The higher the difficulty, the more advanced the techniques required. Click each technique name to learn more.
Beginner Techniques
Intermediate Techniques
IntermediateNaked Pair
Two cells share the same two candidates. Eliminate them from other cells.
IntermediatePointing Pair
A number in a block is confined to one row/column. Eliminate from other blocks.
IntermediateBox-Line Reduction
A number in a row/column is confined to one block. The reverse of Pointing Pair.