Practise: Hidden Triple
Look only at the highlighted row, column or box. Which three digits have only these three homes?
The three prepared note cells are in the highlighted unit. Do not place a digit yet: first find the three digits that can only go here.
Example 1 of 4
Your turn first
Which three digits belong only here?
Look only at the three prepared note cells in the highlighted unit. Which three digits occur only in these cells? Do not place a digit yet; find the triple first.
Remember
A Hidden Triple is simple: if three digits have only the same three homes, every other note in those cells disappears. The order of the three digits is not fixed yet.
Put it to use
Where you will meet it
Hard grids are built around moves like this one. That is where it earns its keep.
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