Direct Hidden Triplet
Direct Hidden Triplet is a Hidden Triplet that comes with a placement attached. Three values in a house share the same three candidate cells, so the other notes in those cells are dead weight — that's the Hidden Triplet part. But if clearing them leaves another digit in the same house with only one cell to go to, you place it on the spot.
What is Direct Hidden Triplet?
A Hidden Triplet locks three values into three cells — those cells are spoken for, and anything else noted in them is clutter. Direct Hidden Triplet doesn't stop at the cleanup. Once the clutter is gone, it checks the same house for a digit that's been cut down to a single candidate. If one shows up, that's the placement — no need to run a separate Hidden Single pass afterward.
How to spot it
First hunt down a Hidden Triplet — three values in a house whose candidates are exactly the same three cells. Wipe the other notes from those cells in your head, then sweep the house for a digit that's been reduced to one candidate. If you find one, that's your cell. Pencil marks are essential here — three values, three cells, and you're checking the whole house afterward, so trying to hold it all in your head without notes is a losing bet.
The logic
Three values have to appear in the house, and between them they only have three candidate cells — so those three cells are theirs, full stop. Once the extra notes are stripped out, the house has less going on. If some other digit now has a single candidate left in that house, that cell has to be it — there's nowhere else left.