Game technique · Sudoku
Hidden Triples in Sudoku
If three digits are restricted to the same three cells in a unit, remove other candidates from those cells.
🎮 Play Sudoku →How it works
If three digits are restricted to the same three cells in a unit, remove other candidates from those cells.
Example
When 2, 5, and 9 appear nowhere else in a column, the three supporting cells contain only those digits.
Key point
If three digits are restricted to the same three cells in a unit, remove other candidates from those cells.