Hidden triple strategy for solving sudoku
Advanced strategies
Hidden triple
We will use this method when we have the three same candidates in three cells of the same block, line or column.
If in this area (block, line or column), the three candidates are present in only three cells, then the other candidates are to be removed.
Example
The hidden triplets are difficult to discover. In this example, they are the 4, 7 and 8.
The other candidates present in the 3 boxes of this block have to be eliminated.
Strategies list
Elimination of candidates by interaction in the same area
Elimination of candidates by interaction in several areas
Elimination of candidates by interaction in all the puzzle
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