Medium Used from medium puzzles up.
Naked Triple
Three cells, three candidates
Three cells of a unit whose candidates, taken together, are only three digits will hold those three digits.
Each cell need not have all three: 1 2, 2 3 and 1 3 make a triple too.
The three digits are used up in that unit: remove them from its other cells.
What to look for
Find three cells of one unit whose candidates together are just three digits.
Example
- The cells the technique relies on
- Cells where it removes candidates, struck out in red
Practise it
In the app, Learn › Naked Triple sets exercises on real positions, then a full puzzle that needs this technique and nothing harder.