Claiming

Claiming applies when a candidate appears only in one box within a row or column


  1. Take a look at this example
An example of claiming sudoku technique

  1. All cells that might contain the value 2 are located in the same row. So 2 must definitely be placed in one of these cells
Claiming technique - spot the candidates

  1. This means that 2 can’t appear anywhere in the box outside the row.
Results of applying claiming sudoku technique